{"title":"Mug Fisika","description":"\u003cp\u003eHukum fisika, digambar sebagai karakter seni piksel, pada mug keramik hitam 11 dan 15 oz. Setiap mug memadukan karakter dengan persamaannya dan lelucon satu baris, dari hukum Planck hingga mekanisme Higgs. Setiap halaman produk memiliki panel fisika dengan penjelasan simbol dan sumber untuk diperiksa.\u003c\/p\u003e","products":[{"product_id":"turbulorn-the-seeing-wraith-mug","title":"Turbulorn, the Seeing Wraith Mug","description":"\u003cp\u003eFried parameter r₀ ∝ λ\u003csup\u003e6\/5\u003c\/sup\u003e: seeing improves at longer wavelengths.\u003c\/p\u003e\n\u003cp\u003eThe joke: Observers switch to infrared when seeing is poor. The slogan on the mug reads \u003cstrong\u003eBAD SEEING? GO REDDER.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: D. L. Fried, J. Opt. Soc. Am. 56, 1372 (1966).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50974911987815,"sku":"12062749849222645039","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/5764488358980926615_2048.jpg?v=1793684190"},{"product_id":"flickermoth-the-pink-noise-moth-queen-mug","title":"Flickermoth, the Pink-Noise Moth Queen Mug","description":"\u003cp\u003eFlicker (1\/f) noise: spectral density S(f) ∝ 1\/f\u003csup\u003eα\u003c\/sup\u003e with α ≈ 1. When the fluctuating quantity is fractional frequency y (flicker FM, S\u003csub\u003ey\u003c\/sub\u003e(f) ∝ 1\/f), the Allan deviation stops falling and flattens into a floor, σ\u003csub\u003ey\u003c\/sub\u003e(τ) = const, so averaging longer stops helping; for white FM it falls as τ\u003csup\u003e−1\/2\u003c\/sup\u003e.\u003c\/p\u003e\n\u003cp\u003eThe joke: With white noise σ falls as 1\/√τ; with 1\/f it plateaus, so the extra 6 hours of averaging bought nothing. The slogan on the mug reads \u003cstrong\u003eAVERAGING LONGER. REGRETTING LONGER.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: J. B. Johnson, Phys. Rev. 26, 71 (1925) (low-frequency 'flicker effect'); D. W. Allan, Proc. IEEE 54, 221 (1966).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976049692775,"sku":"21724511975243205581","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/16176038747523234160_2048.jpg?v=1793683500"},{"product_id":"cryoselle-abbess-of-the-twenty-millikelvin-mug","title":"Cryoselle, Abbess of the Twenty Millikelvin Mug","description":"\u003cp\u003eMean thermal photon number n̄ = 1\/(e\u003csup\u003ehf\/kT\u003c\/sup\u003e − 1). For a 5 GHz qubit mode at 20 mK, hf\/kT ≈ 12, so n̄ ≈ 6 × 10⁻⁶: the mode is almost always empty.\u003c\/p\u003e\n\u003cp\u003eThe joke: Only someone who has thermalised a qubit knows that 'quiet' means hf\/kT ≫ 1, not turning off the radio. The slogan on the mug reads \u003cstrong\u003ehf ≫ kT. FINALLY, SILENCE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: M. Planck, Ann. Phys. 309, 553 (1901); S. N. Bose, Z. Phys. 26, 178 (1924). Value computed with exact SI h = 6.62607015×10⁻³⁴ J s and k = 1.380649×10⁻²³ J\/K (CODATA 2022).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976066437223,"sku":"83894615196601421220","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/8943168521930095667_2048.jpg?v=1793683508"},{"product_id":"pelletine-the-grain-counting-clerk-mug","title":"Pelletine, the Grain-Counting Clerk Mug","description":"\u003cp\u003eShot noise: current made of discrete charges fluctuates with spectral density S\u003csub\u003eI\u003c\/sub\u003e = 2qI. Its size reveals the charge of the carrier.\u003c\/p\u003e\n\u003cp\u003eThe joke: Shot noise exists only because e is not zero; physicists measure fractional charge (e\/3) this way. The slogan on the mug reads \u003cstrong\u003eCHARGE COMES IN LUMPS. SO DOES PROGRESS.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: W. Schottky, Ann. Phys. 362, 541 (1918).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976074956903,"sku":"18348797074999545692","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/7914315940246685353_2048.jpg?v=1793683515"},{"product_id":"waistwyn-the-gaussian-archer-mug","title":"Waistwyn, the Gaussian Archer Mug","description":"\u003cp\u003eA Gaussian beam stays near-focused only within the Rayleigh range z\u003csub\u003eR\u003c\/sub\u003e = πw₀²\/λ; at z = z\u003csub\u003eR\u003c\/sub\u003e its radius has grown by √2.\u003c\/p\u003e\n\u003cp\u003eThe joke: Every optics student knows focus is not forever: tighter waists diverge faster. The slogan on the mug reads \u003cstrong\u003eFOCUSED FOR ONE RAYLEIGH RANGE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: H. Kogelnik \u0026amp; T. Li, Appl. Opt. 5, 1550 (1966).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976083509351,"sku":"10548423181095494174","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/552278901488293890_2048.jpg?v=1793683524"},{"product_id":"asymptor-the-last-step-knight-mug","title":"Asymptor, the Last-Step Knight Mug","description":"\u003cp\u003eUnattainability form of the third law: absolute zero cannot be reached in a finite number of steps (finite time and resources).\u003c\/p\u003e\n\u003cp\u003eThe joke: The joke is the theorem: every cooling cycle helps less, forever. The slogan on the mug reads \u003cstrong\u003eZERO KELVIN: ALWAYS ONE MORE STEP.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: W. Nernst, Sitzungsber. Preuss. Akad. Wiss. 1912, 134; L. Masanes \u0026amp; J. Oppenheim, Nat. Commun. 8, 14538 (2017).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976100319335,"sku":"26087373047740495844","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/7288440390700707198_2048.jpg?v=1793683531"},{"product_id":"quenchard-the-superconducting-duke-mug","title":"Quenchard, the Superconducting Duke Mug","description":"\u003cp\u003eA superconducting magnet quenches when a local spot turns normal; Joule heating spreads the normal zone and the stored energy dumps. NbTi: T\u003csub\u003ec\u003c\/sub\u003e ≈ 9.2 K.\u003c\/p\u003e\n\u003cp\u003eThe joke: 'Goes normal' is the insider phrase for losing superconductivity; one hot spot is enough. The slogan on the mug reads \u003cstrong\u003eONE WARM SPOT. EVERYTHING GOES NORMAL.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: M. N. Wilson, Superconducting Magnets (Oxford, 1983).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976108806247,"sku":"13899411383130328017","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/11783270673406498660_2048.jpg?v=1793683538"},{"product_id":"thermican-the-slow-bolometer-monk-mug","title":"Thermican, the Slow Bolometer Monk Mug","description":"\u003cp\u003eA bolometer with heat capacity C and thermal link G has time constant τ = C\/G; it warms and cools exponentially with τ, just like Newton's law of cooling: ΔT = ΔT\u003csub\u003e0\u003c\/sub\u003e e\u003csup\u003e−t\/τ\u003c\/sup\u003e, where ΔT is the temperature difference to the room, ΔT\u003csub\u003e0\u003c\/sub\u003e its initial value, t the time and τ the time constant.\u003c\/p\u003e\n\u003cp\u003eThe joke: Bolometer people tune C and G; the time constant is literally slowness by design. The slogan on the mug reads \u003cstrong\u003eτ = C\/G. SLOW TO WARM, SLOW TO FORGIVE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: P. L. Richards, J. Appl. Phys. 76, 1 (1994).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976117129319,"sku":"29610133632871224252","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/3031414537938529727_2048.jpg?v=1793685788"},{"product_id":"quadrell-the-quadrature-scribe-mug","title":"Quadrell, the Quadrature Scribe Mug","description":"\u003cp\u003eIndependent uncertainties combine in quadrature: σ² = Σ (∂f\/∂x\u003csub\u003ei\u003c\/sub\u003e)² σ\u003csub\u003ei\u003c\/sub\u003e². Correlated ones do not.\u003c\/p\u003e\n\u003cp\u003eThe joke: Independent errors partially cancel; correlated grad-student problems add linearly. The slogan on the mug reads \u003cstrong\u003eERRORS ADD IN QUADRATURE. PROBLEMS DON'T.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: JCGM 100:2008 (GUM), §5.1 and §5.2, BIPM.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976117358695,"sku":"24435810487184890707","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/16478020148892836555_2048.jpg?v=1793683554"},{"product_id":"radicane-the-square-root-gambler-mug","title":"Radicane, the Square-Root Gambler Mug","description":"\u003cp\u003ePoisson counting: σ\u003csub\u003eN\u003c\/sub\u003e = √N, so relative error is 1\/√N. Halving the error takes four times the counts.\u003c\/p\u003e\n\u003cp\u003eThe joke: The cruelty of 1\/√N: precision is quadratic in suffering. The slogan on the mug reads \u003cstrong\u003eHALF THE ERROR. FOUR TIMES THE NIGHTS.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: S.-D. Poisson, Recherches sur la probabilité des jugements (1837); JCGM 100:2008.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976117686375,"sku":"33827469817533396046","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/9394580852369924150_2048.jpg?v=1793683562"},{"product_id":"boundraith-the-mismatched-border-wraith-mug","title":"Boundraith, the Mismatched Border Wraith Mug","description":"\u003cp\u003eKapitza resistance: heat crossing a solid–liquid-helium boundary meets a thermal boundary resistance R\u003csub\u003eK\u003c\/sub\u003e ∝ T⁻³ (acoustic mismatch).\u003c\/p\u003e\n\u003cp\u003eThe joke: Phonons mismatch at interfaces; cryo people sinter silver to fight it. Distinct from KAPITZADIRAC (live sticker). The slogan on the mug reads \u003cstrong\u003eEVEN HEAT HESITATES AT THE BOUNDARY.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: P. L. Kapitza, J. Phys. USSR 4, 181 (1941); G. L. Pollack, Rev. Mod. Phys. 41, 48 (1969).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976126107751,"sku":"18166083485676983818","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/14697270598430451824_2048.jpg?v=1793683570"},{"product_id":"tallywick-the-dark-count-lamplighter-mug","title":"Tallywick, the Dark-Count Lamplighter Mug","description":"\u003cp\u003eThermionic emission: J = A T² e\u003csup\u003e−W\/kT\u003c\/sup\u003e (Richardson–Dushman). It is why photomultipliers have dark counts and why they are cooled.\u003c\/p\u003e\n\u003cp\u003eThe joke: Dark counts are thermal electrons leaving the photocathode; cooling suppresses them exponentially. The slogan on the mug reads \u003cstrong\u003eIN THE DARK, SOMETHING STILL CLICKS.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: S. Dushman, Phys. Rev. 21, 623 (1923); O. W. Richardson, Nobel Lecture (1929).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976134463591,"sku":"28537838076654915845","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/6237891393593939507_2048.jpg?v=1793683578"},{"product_id":"phaselocke-the-lock-in-locksmith-mug","title":"Phaselocke, the Lock-In Locksmith Mug","description":"\u003cp\u003eLock-in detection multiplies the signal by a reference at f\u003csub\u003eref\u003c\/sub\u003e and low-pass filters, recovering a signal buried far below broadband noise.\u003c\/p\u003e\n\u003cp\u003eThe joke: Phase-sensitive detection is the grad student's miracle: SNR from nowhere. The slogan on the mug reads \u003cstrong\u003eBURIED IN NOISE. LOCKED IN ANYWAY.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: J. H. Scofield, Am. J. Phys. 62, 129 (1994) ('Frequency-domain description of a lock-in amplifier').\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976142852199,"sku":"76797459626505541886","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/6967336786051111230_2048.jpg?v=1793683585"},{"product_id":"solitaren-the-mean-free-path-hermit-mug","title":"Solitaren, the Mean-Free-Path Hermit Mug","description":"\u003cp\u003eMean free path λ = k\u003csub\u003eB\u003c\/sub\u003eT\/(√2 π d² p). For air at room temperature, λ ≈ 6.6 × 10⁻³ cm \/(p in mbar), about 66 m at 10⁻⁶ mbar.\u003c\/p\u003e\n\u003cp\u003eThe joke: High vacuum means molecules hit the chamber wall before each other. The slogan on the mug reads \u003cstrong\u003eAT 1E-6 MBAR, MOLECULES GET 66 M ALONE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: K. Jousten (ed.), Handbook of Vacuum Technology (Wiley-VCH, 2016), ch. 3.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976151273575,"sku":"18059136623874506160","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/10681729517441662261_2048.jpg?v=1793683592"},{"product_id":"driftgale-the-thermal-drift-wind-spirit-mug","title":"Driftgale, the Thermal-Drift Wind Spirit Mug","description":"\u003cp\u003eAluminium's thermal expansion coefficient is about 23 × 10⁻⁶ K⁻¹, so a 1 m aluminium path grows 23 µm per kelvin, about 36 HeNe wavelengths.\u003c\/p\u003e\n\u003cp\u003eThe joke: Interferometrists know the AC cycling at night shifts fringes by dozens of wavelengths. The slogan on the mug reads \u003cstrong\u003eONE KELVIN. 23 MICRONS. NO FRINGES.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: CRC Handbook of Chemistry and Physics, 'Thermal expansion of metals' (α\u003csub\u003eAl\u003c\/sub\u003e ≈ 23.1 × 10⁻⁶ K⁻¹).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976159662183,"sku":"32515382629909273480","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/9795688802256000278_2048.jpg?v=1793683601"},{"product_id":"secundar-the-second-referee-mug","title":"Secundar, the Second Referee Mug","description":"\u003cp\u003eGauge freedom: A → A + ∇χ, φ → φ − ∂χ\/∂t leaves E and B unchanged. Gauge transformations change nothing physical.\u003c\/p\u003e\n\u003cp\u003eThe joke: Reviewer 2's requested revisions: lots of work, zero observable difference. The slogan on the mug reads \u003cstrong\u003ePURE GAUGE. NOTHING PHYSICAL CHANGED.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: J. D. Jackson, Classical Electrodynamics, 3rd ed. (Wiley, 1999), §6.3; H. Weyl, Z. Phys. 56, 330 (1929).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976168476775,"sku":"90929541355815431702","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/13782256405507959175_2048.jpg?v=1793683608"},{"product_id":"secantha-the-setting-target-huntress-mug","title":"Secantha, the Setting-Target Huntress Mug","description":"\u003cp\u003eAirmass X ≈ sec z for zenith angles below about 60°; extinction grows with X.\u003c\/p\u003e\n\u003cp\u003eThe joke: Racing the target as it sets into thicker air. The slogan on the mug reads \u003cstrong\u003eSEC Z RISING. SO IS MY DESPAIR.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: F. Kasten \u0026amp; A. T. Young, Appl. Opt. 28, 4735 (1989).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976176963687,"sku":"27051988287563684895","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/17872673876759077164_2048.jpg?v=1793683615"},{"product_id":"duskward-the-astronomical-twilight-warden-mug","title":"Duskward, the Astronomical-Twilight Warden Mug","description":"\u003cp\u003eAstronomical twilight ends when the Sun's centre is 18° below the horizon.\u003c\/p\u003e\n\u003cp\u003eThe joke: Observers wait for 18°; civil twilight people are amateurs. The slogan on the mug reads \u003cstrong\u003e18 DEGREES BELOW OR IT DOESN'T COUNT.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: U.S. Naval Observatory, 'Rise, Set, and Twilight Definitions'.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976185548903,"sku":"33341881713489970740","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/15854507886820274813_2048.jpg?v=1793683623"},{"product_id":"streakwin-the-cosmic-ray-interloper-mug","title":"Streakwin, the Cosmic-Ray Interloper Mug","description":"\u003cp\u003eSea-level muon flux is about 1 per cm² per minute for a horizontal detector; cosmic rays leave streaks on long CCD exposures.\u003c\/p\u003e\n\u003cp\u003eThe joke: Every long exposure needs cosmic-ray rejection. The slogan on the mug reads \u003cstrong\u003eONE PER CM² PER MINUTE. ALL ON MY TARGET.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: Particle Data Group, 'Cosmic Rays' review (2022).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976194003047,"sku":"25881594550133734782","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/5779814748831149452_2048.jpg?v=1793683631"},{"product_id":"backglowen-the-sky-limited-lantern-mug","title":"Backglowen, the Sky-Limited Lantern Mug","description":"\u003cp\u003eCCD equation: in the sky-limited regime, sky background noise dominates read noise and SNR ∝ √t.\u003c\/p\u003e\n\u003cp\u003eThe joke: Noise from the sky, not the detector: the observer's existential crisis. The slogan on the mug reads \u003cstrong\u003eSKY-LIMITED. EVEN MY NOISE ISN'T MINE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: S. B. Howell, Handbook of CCD Astronomy, 2nd ed. (Cambridge, 2006), §4.4.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976202653799,"sku":"71899887392968341481","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/8163049628329021517_2048.jpg?v=1793683639"},{"product_id":"siderelle-the-four-minute-ghost-mug","title":"Siderelle, the Four-Minute Ghost Mug","description":"\u003cp\u003eA sidereal day is about 23 h 56 min 4.09 s, so stars rise about 4 minutes earlier each solar day.\u003c\/p\u003e\n\u003cp\u003eThe joke: Observers' schedules drift with LST. The slogan on the mug reads \u003cstrong\u003eTHE STARS RETURN 4 MINUTES EARLIER. I DON'T.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: IERS Conventions (2010), Tech. Note 36; Astronomical Almanac (USNO).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976210976871,"sku":"43883048193277431746","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/14934871192771122774_2048.jpg?v=1793683648"},{"product_id":"nimbryn-the-mie-scattering-grey-lady-mug","title":"Nimbryn, the Mie-Scattering Grey Lady Mug","description":"\u003cp\u003eMie scattering by cloud droplets (size ≫ λ) is nearly wavelength-independent, so clouds are white or grey.\u003c\/p\u003e\n\u003cp\u003eThe joke: Clouds block all bands; no filter helps. The slogan on the mug reads \u003cstrong\u003eMIE SCATTERING. NO FILTER SAVES YOU.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: G. Mie, Ann. Phys. 330, 377 (1908).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976219365479,"sku":"10898935983732070624","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/12426078079003963355_2048.jpg?v=1793683657"},{"product_id":"beaconess-the-laser-star-maker-mug","title":"Beaconess, the Laser-Star Maker Mug","description":"\u003cp\u003eLaser guide stars excite mesospheric sodium at 589 nm at about 90 km altitude.\u003c\/p\u003e\n\u003cp\u003eThe joke: Adaptive optics people literally make their own star. Distinct from the live Sodium Doublet poster. The slogan on the mug reads \u003cstrong\u003eNO STAR? MAKE ONE AT 90 KM.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: R. Foy \u0026amp; A. Labeyrie, A\u0026amp;A 152, L29 (1985); W. Happer et al., JOSA A 11, 263 (1994).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976227950695,"sku":"25486988023520210026","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/11225640431894278064_2048.jpg?v=1793683664"},{"product_id":"drycrest-the-water-vapour-hermit-mug","title":"Drycrest, the Water-Vapour Hermit Mug","description":"\u003cp\u003eHigh sites are chosen for low precipitable water vapour; in situ TMT site testing gave median PWV of 1.86 mm at Mauna Kea 13N (4050 m) and 1.70 mm at Cerro Tolonchar (4480 m).\u003c\/p\u003e\n\u003cp\u003eThe joke: Mm and submm astronomers know water is the enemy. The slogan on the mug reads \u003cstrong\u003eABOVE THE WATER. NOT ABOVE THE DEADLINE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: A. Otárola et al., PASP 122, 470 (2010).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976236404839,"sku":"14517334379793152924","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/36135828398667788_2048.jpg?v=1793683672"},{"product_id":"slithera-the-parallactic-serpent-mug","title":"Slithera, the Parallactic Serpent Mug","description":"\u003cp\u003eAtmospheric differential refraction disperses star images vertically; align the slit along the parallactic angle to avoid losing blue light.\u003c\/p\u003e\n\u003cp\u003eThe joke: Spectroscopists' oldest lesson. The slogan on the mug reads \u003cstrong\u003eSLIT ALONG PARALLACTIC OR LOSE THE BLUE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: A. V. Filippenko, PASP 94, 715 (1982).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976244858983,"sku":"26238492429503187753","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/2910856349525488474_2048.jpg?v=1793683679"},{"product_id":"nightglowe-the-airglow-sleepwalker-mug","title":"Nightglowe, the Airglow Sleepwalker Mug","description":"\u003cp\u003eOH airglow (Meinel bands) dominates the near-infrared night-sky background.\u003c\/p\u003e\n\u003cp\u003eThe joke: Near-IR observers know the sky itself is bright. The slogan on the mug reads \u003cstrong\u003eEVEN THE DARK SKY GLOWS.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: A. B. Meinel, ApJ 111, 555 (1950).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976253411431,"sku":"10589760840267850149","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/14858648316037853008_2048.jpg?v=1793683687"},{"product_id":"twinkelle-the-point-source-dancer-mug","title":"Twinkelle, the Point-Source Dancer Mug","description":"\u003cp\u003eStars scintillate but planets twinkle less because their angular size averages the fluctuations.\u003c\/p\u003e\n\u003cp\u003eThe joke: Size averages scintillation. The slogan on the mug reads \u003cstrong\u003ePOINT SOURCES TWINKLE. EXTENDED ONES COPE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: D. Dravins et al., PASP 109, 173 (1997).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976261931111,"sku":"92981461020203354367","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/16792222441071023657_2048.jpg?v=1793683694"},{"product_id":"epochra-the-precession-navigator-mug","title":"Epochra, the Precession Navigator Mug","description":"\u003cp\u003eGeneral precession in longitude is about 50.3″ per year; coordinates must specify the epoch (J2000).\u003c\/p\u003e\n\u003cp\u003eThe joke: Pointing at old coordinates. The slogan on the mug reads \u003cstrong\u003eWRONG EPOCH. WRONG SKY.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: N. Capitaine et al., A\u0026amp;A 412, 567 (2003).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976262127719,"sku":"27355079249273208906","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/5935759417395964018_2048.jpg?v=1793683702"},{"product_id":"magnidra-the-pogson-scale-keeper-mug","title":"Magnidra, the Pogson Scale Keeper Mug","description":"\u003cp\u003ePogson's magnitude scale: 5 magnitudes equals a factor of 100 in flux.\u003c\/p\u003e\n\u003cp\u003eThe joke: Brighter is smaller; insiders only. The slogan on the mug reads \u003cstrong\u003eFIVE MAGNITUDES. 100 TIMES FAINTER.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: N. Pogson, MNRAS 17, 12 (1856).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976262553703,"sku":"14928975499797732363","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/965959677541213038_2048.jpg?v=1793683710"},{"product_id":"surgelle-the-full-moon-thief-mug","title":"Surgelle, the Full-Moon Thief Mug","description":"\u003cp\u003eOpposition surge: the Moon brightens sharply near zero phase angle (full moon).\u003c\/p\u003e\n\u003cp\u003eThe joke: Faint-object observers dread full moon. The slogan on the mug reads \u003cstrong\u003eFULL MOON. OPPOSITION SURGE. NO DARK TIME.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: B. J. Buratti, J. K. Hillier \u0026amp; M. Wang, Icarus 124, 490 (1996).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976271040615,"sku":"29753203224400744784","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/219445011500021976_2048.jpg?v=1793683718"},{"product_id":"chimella-the-hot-chocolate-bell-mug","title":"Chimella, the Hot-Chocolate Bell Mug","description":"\u003cp\u003eHot chocolate effect: tapping pitch rises as bubbles leave, because bubbles lower the sound speed.\u003c\/p\u003e\n\u003cp\u003eThe joke: Rising pitch reveals bubble physics. The slogan on the mug reads \u003cstrong\u003eTAP THE MUG. HEAR THE BUBBLES LEAVE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: F. S. Crawford, Am. J. Phys. 50, 398 (1982).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976271335527,"sku":"11404377299115574127","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/17174499427421337795_2048.jpg?v=1793683725"},{"product_id":"nullwen-the-upper-limit-herald-mug","title":"Nullwen, the Upper-Limit Herald Mug","description":"\u003cp\u003eAn upper limit is a result: the Feldman–Cousins unified approach gives confidence intervals that move smoothly from upper limits to two-sided intervals.\u003c\/p\u003e\n\u003cp\u003eThe joke: The null result can be published precisely because the limit is quantified. The slogan on the mug reads \u003cstrong\u003eNOTHING FOUND. 90% CONFIDENT.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: G. J. Feldman \u0026amp; R. D. Cousins, Phys. Rev. D 57, 3873 (1998).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978065416295,"sku":"35112957636497234436","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/8141093118316160990_2048.jpg?v=1793684082"},{"product_id":"trialsworn-the-look-elsewhere-seer-mug","title":"Trialsworn, the Look-Elsewhere Seer Mug","description":"\u003cp\u003eLook-elsewhere effect: a local significance must be corrected for the number of places you searched, lowering the global significance.\u003c\/p\u003e\n\u003cp\u003eThe joke: Anyone who saw a bump vanish after the trials factor knows the feeling. The slogan on the mug reads \u003cstrong\u003eLOCAL 3 SIGMA. GLOBAL SHRUG.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: E. Gross \u0026amp; O. Vitells, Eur. Phys. J. C 70, 525 (2010).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978065612903,"sku":"65014321253812929964","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/8066464414416871636_2048.jpg?v=1793684096"},{"product_id":"sigmarel-the-five-sigma-gatekeeper-mug","title":"Sigmarel, the Five-Sigma Gatekeeper Mug","description":"\u003cp\u003eThe particle-physics discovery convention is 5σ, a one-sided p-value of about 2.9 × 10⁻⁷, roughly 1 in 3.5 million.\u003c\/p\u003e\n\u003cp\u003eThe joke: The bar is absurdly high because of systematics and the trials factor. The slogan on the mug reads \u003cstrong\u003e1 IN 3.5 MILLION OR IT DIDN'T HAPPEN.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: Particle Data Group, R. L. Workman et al., Prog. Theor. Exp. Phys. 2022, 083C01, 'Statistics' review.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978065940583,"sku":"11045955655104148430","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/9315593938587784882_2048.jpg?v=1793684108"},{"product_id":"chivelle-the-too-good-fit-inquisitor-mug","title":"Chivelle, the Too-Good-Fit Inquisitor Mug","description":"\u003cp\u003eχ² per degree of freedom near 1 indicates a good fit; much less than 1 means the error bars were overestimated.\u003c\/p\u003e\n\u003cp\u003eThe joke: A fit that is too good is suspicious, which only fitters know. The slogan on the mug reads \u003cstrong\u003eCHI²\/NDF = 0.2. REVIEWER 2 IS SUSPICIOUS.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: Particle Data Group, 'Statistics' review (2022), goodness-of-fit section.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978066169959,"sku":"32743935270632921346","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/18355277628562952294_2048.jpg?v=1793684120"},{"product_id":"truncalis-the-divergent-series-oracle-mug","title":"Truncalis, the Divergent-Series Oracle Mug","description":"\u003cp\u003eQED perturbation series is (generally argued to be) asymptotic, not convergent: adding terms improves the answer only up to an optimal order (heuristically ~1\/α ≈ 137), after which it worsens.\u003c\/p\u003e\n\u003cp\u003eThe joke: Every thesis edit after a point is a higher-order term. The slogan on the mug reads \u003cstrong\u003eMORE TERMS. WORSE ANSWER.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: F. J. Dyson, Phys. Rev. 85, 631 (1952).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978066432103,"sku":"15369295102824933460","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/500841360062762505_2048.jpg?v=1793684132"},{"product_id":"counterterra-the-renormalising-smith-mug","title":"Counterterra, the Renormalising Smith Mug","description":"\u003cp\u003eRenormalisation absorbs divergences into a redefinition of measured mass and charge, leaving finite predictions.\u003c\/p\u003e\n\u003cp\u003eThe joke: Physicists hide infinities in constants; grad students hide them in footnotes. The slogan on the mug reads \u003cstrong\u003eMY INFINITIES ARE RENORMALISED.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: F. J. Dyson, Phys. Rev. 75, 486 (1949) and 75, 1736 (1949).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978067054695,"sku":"19601446464187175821","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/16656720078867064630_2048.jpg?v=1793684144"},{"product_id":"densara-the-final-state-cartographer-mug","title":"Densara, the Final-State Cartographer Mug","description":"\u003cp\u003eFermi's golden rule: transition rate Γ = (2π\/ħ)|M|² ρ(E\u003csub\u003ef\u003c\/sub\u003e). With no density of final states, there is no transition.\u003c\/p\u003e\n\u003cp\u003eThe joke: The job market as a density of states. The slogan on the mug reads \u003cstrong\u003eNO FINAL STATES. NO TRANSITION.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: P. A. M. Dirac, Proc. R. Soc. A 114, 243 (1927); E. Fermi, Nuclear Physics (Univ. Chicago Press, 1950).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978067316839,"sku":"77325316806688003706","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/15833063948633107835_2048.jpg?v=1793684156"},{"product_id":"adiabram-the-slow-change-shepherd-mug","title":"Adiabram, the Slow-Change Shepherd Mug","description":"\u003cp\u003eAdiabatic theorem: a system with a non-degenerate, gapped spectrum, changed slowly compared with ħ\/ΔE, stays in its instantaneous eigenstate; sudden changes cause transitions.\u003c\/p\u003e\n\u003cp\u003eThe joke: Advisors who change the thesis scope suddenly excite the student out of the ground state. The slogan on the mug reads \u003cstrong\u003eCHANGE THE SCOPE SLOWLY.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: M. Born \u0026amp; V. Fock, Z. Phys. 51, 165 (1928).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978067611751,"sku":"13592751972808039575","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/13730350615714815008_2048.jpg?v=1793684163"},{"product_id":"rimehold-the-supercooled-sentinel-mug","title":"Rimehold, the Supercooled Sentinel Mug","description":"\u003cp\u003ePure water droplets can stay liquid down to about −38 °C before homogeneous ice nucleation.\u003c\/p\u003e\n\u003cp\u003eThe joke: Metastability: a single nucleation site and the whole thing freezes at once. The slogan on the mug reads \u003cstrong\u003eSUPERCOOLED. ONE SPECK FROM PANIC.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: T. Koop, B. Luo, A. Tsias \u0026amp; T. Peter, Nature 406, 611 (2000).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978067873895,"sku":"15287657288787529492","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/90642987289670233_2048.jpg?v=1793684173"},{"product_id":"remanenza-the-hysteresis-countess-mug","title":"Remanenza, the Hysteresis Countess Mug","description":"\u003cp\u003eHysteresis: the area enclosed by a B–H loop equals the energy dissipated per cycle per unit volume.\u003c\/p\u003e\n\u003cp\u003eThe joke: Revisions that return to the original draft still dissipate energy: the loop area. The slogan on the mug reads \u003cstrong\u003eFULL REVISION LOOP. AREA LOST AS HEAT.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: E. Warburg, \"Magnetische Untersuchungen\", Ann. Phys. 249, 141 (1881), doi:10.1002\/andp.18812490510; C. P. Steinmetz, \"On the law of hysteresis\", Trans. AIEE 9, 1 (1892), doi:10.1109\/T-AIEE.1892.5570437.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978068430951,"sku":"34014826701437110598","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/2453856400573587762_2048.jpg?v=1793684182"},{"product_id":"creamward-the-milk-first-alchemist-mug","title":"Creamward, the Milk-First Alchemist Mug","description":"\u003cp\u003eNewton's law of cooling: loss rate ∝ (T − T\u003csub\u003eenv\u003c\/sub\u003e). With fridge-cold milk, adding it first lets the cold deficit relax toward room temperature too, so milk-first is hotter at drinking time; nonlinear radiative and evaporative losses (largest when hottest) push the same way.\u003c\/p\u003e\n\u003cp\u003eThe joke: Cooling rate depends on ΔT, so milk timing matters. The slogan on the mug reads \u003cstrong\u003eADD THE MILK FIRST. NEWTON AGREES.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: [I. Newton] (published anonymously), \"Scala graduum caloris\", Phil. Trans. 22, 824 (1701).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978068660327,"sku":"16811869115963757137","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/264427504366524326_2048.jpg?v=1793683780"},{"product_id":"vaporelle-the-latent-spirit-mug","title":"Vaporelle, the Latent Spirit Mug","description":"\u003cp\u003eHeating water from 0 to 100 °C takes about 419 kJ\/kg; vaporising it takes about 2257 kJ\/kg.\u003c\/p\u003e\n\u003cp\u003eThe joke: Leaving costs more than heating; quitting the PhD is a phase change. The slogan on the mug reads \u003cstrong\u003eHEATING: 419 kJ. LEAVING: 2257 kJ.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: IAPWS-95 via NIST Chemistry WebBook (h\u003csub\u003el\u003c\/sub\u003e 0.01→99.97 °C = 419.0 kJ\/kg; L\u003csub\u003ev\u003c\/sub\u003e at 101.325 kPa = 2256.4 kJ\/kg).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978077114471,"sku":"11876348941300111535","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/1630624105009021038_2048.jpg?v=1793683784"},{"product_id":"rimstain-the-coffee-ring-mapmaker-mug","title":"Rimstain, the Coffee-Ring Mapmaker Mug","description":"\u003cp\u003eCoffee-ring effect: evaporation-driven outward flow deposits particles at the drop edge.\u003c\/p\u003e\n\u003cp\u003eThe joke: Insider: capillary flow, not 'drying slower'. The slogan on the mug reads \u003cstrong\u003eEVAPORATION PUTS EVERYTHING AT THE EDGE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: R. D. Deegan et al., Nature 389, 827 (1997).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978085568615,"sku":"33672546279337814136","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/2787770617178427168_2048.jpg?v=1793683790"},{"product_id":"endoreva-the-max-power-engine-mug","title":"Endoreva, the Max-Power Engine Mug","description":"\u003cp\u003eCurzon–Ahlborn efficiency at maximum power: η = 1 − √(T\u003csub\u003ec\u003c\/sub\u003e\/T\u003csub\u003eh\u003c\/sub\u003e).\u003c\/p\u003e\n\u003cp\u003eThe joke: Grad students run at max power, not Carnot efficiency. Distinct from the live Carnot's Ideal poster. The slogan on the mug reads \u003cstrong\u003eMAXIMUM POWER. NOT MAXIMUM EFFICIENCY.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: F. L. Curzon \u0026amp; B. Ahlborn, Am. J. Phys. 43, 22 (1975).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978094153831,"sku":"20226572627162148831","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/16850009691724488767_2048.jpg?v=1793683655"},{"product_id":"summitbrew-the-high-altitude-brewer-mug","title":"Summitbrew, the High-Altitude Brewer Mug","description":"\u003cp\u003eBoiling point drops with pressure; at ~4200 m (≈ 61 kPa) water boils near 86–87 °C.\u003c\/p\u003e\n\u003cp\u003eThe joke: Mountaintop observers know. The slogan on the mug reads \u003cstrong\u003eAT 4200 M, MY COFFEE NEVER GETS HOT ENOUGH.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: IAPWS-IF97 saturation tables; Clausius–Clapeyron.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978102575207,"sku":"92550644169491474047","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/17133517837005091957_2048.jpg?v=1793684259"},{"product_id":"clustrelle-the-cheerios-effect-gatherer-mug","title":"Clustrelle, the Cheerios-Effect Gatherer Mug","description":"\u003cp\u003eFloating objects attract via meniscus deformation (Cheerios effect).\u003c\/p\u003e\n\u003cp\u003eThe joke: Bubbles cluster at the rim, like grad students at free food. The slogan on the mug reads \u003cstrong\u003eLONELY BUBBLES ATTRACT AT THE MENISCUS.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: D. Vella \u0026amp; L. Mahadevan, Am. J. Phys. 73, 817 (2005).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978110963815,"sku":"74064514380163637742","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/6772159393479925914_2048.jpg?v=1793684261"},{"product_id":"stratalat-the-layered-latte-sage-mug","title":"Stratalat, the Layered Latte Sage Mug","description":"\u003cp\u003ePouring espresso into warm milk creates layered latte via double-diffusive convection.\u003c\/p\u003e\n\u003cp\u003eThe joke: Layers come from heat\/salt-like diffusion differences. The slogan on the mug reads \u003cstrong\u003ePOUR SLOWLY. DOUBLE-DIFFUSIVE LAYERS.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: N. Xue et al., Nat. Commun. 8, 1960 (2017).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978119483495,"sku":"14313575956573585657","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/9151256228042410137_2048.jpg?v=1793684263"},{"product_id":"sloshwyn-the-coffee-walker-mug","title":"Sloshwyn, the Coffee-Walker Mug","description":"\u003cp\u003eWalking with coffee spills because gait frequency is near the liquid's sloshing frequency.\u003c\/p\u003e\n\u003cp\u003eThe joke: Spills are resonance. The slogan on the mug reads \u003cstrong\u003eWALK SLOWER THAN THE SLOSH RESONANCE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: H. C. Mayer \u0026amp; R. Krechetnikov, Phys. Rev. E 85, 046117 (2012).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978128167015,"sku":"23002866167132316936","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/4988408351473121088_2048.jpg?v=1793684266"},{"product_id":"tepidora-the-zeroth-law-ghost-mug","title":"Tepidora, the Zeroth-Law Ghost Mug","description":"\u003cp\u003eZeroth law: systems in thermal equilibrium with a third are in equilibrium with each other; a forgotten mug reaches room temperature.\u003c\/p\u003e\n\u003cp\u003eThe joke: Forgotten coffee is equilibrium. The slogan on the mug reads \u003cstrong\u003eCOLD COFFEE. ZEROTH LAW ACHIEVED.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: R. H. Fowler \u0026amp; E. A. Guggenheim, Statistical Thermodynamics (Cambridge, 1939).\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50978136686695,"sku":"20370157324357197054","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/2880108504485761437_2048.jpg?v=1793684267"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/collections\/physics-mugs.png?v=1793678018","url":"https:\/\/pixelatedphysics.com\/id\/collections\/physics-mugs.oembed","provider":"Pixelated Physics","version":"1.0","type":"link"}