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Pixelated Physics
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In evidenza
· Physicist Portrait
Quantum mechanics describes a particle with a wavefunction ψ, but experiments record definite clicks. The Born rule is the bridge: the probability of finding the particle is the squared magnitude of the wavefunction, |ψ|². Here is what the rule says, where Max Born got it, how well it has been tested, and which parts are still argued over.
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460 products · 104 tees · 15 hoodies · 74 mugs · 142 stickers · 27 sticker sheets
1420 MHzPoster · Quantistica
From $19.99
Atom Smashers Pixel Sticker SheetSticker · Quantistica
$19.99Q = \left(M_{\text{initial}} - M_{\text{final}}\right)c^{2}
AugermeitSticker · Quantistica
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Aurora, Line by LinePoster · Quantistica
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BarnettaSticker · Quantistica
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BerryphaseSticker · Quantistica
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BifurcorSticker · Quantistica
From $4.99F_z = \mu_z\,\frac{\partial B_z}{\partial z}
BohraSticker · Quantistica
From $4.99
Bose-Einstein Condensate 1995 TeeTee · Quantistica
$29.99\lambda_{\mathrm{dB}} = \frac{h}{\sqrt{2\pi m k_B T}}
Bragg's Law: Salt PlanesPoster · Quantistica
From $19.99
C. V. Raman StickerSticker · Quantistica
From $4.99\begin{gathered} h\nu_s = h\nu_0 - h\nu_{\text{vib}} \\ (\text{Stokes}) \end{gathered}
CasimiraSticker · Quantistica
From $4.99\frac{F}{A} = -\frac{\pi^2\hbar c}{240\,d^4}
Chlorophyll's GapPoster · Quantistica
From $19.99
ChronolithTee · Quantistica
$29.99H(t+T) = H(t)
CondensaSticker · Quantistica
From $4.99\frac{N_0}{N} = 1 - \left(\frac{T}{T_c}\right)^{3/2}\quad(T\le T_c)
Constants & Units Pixel Sticker SheetSticker · Quantistica
$19.99m g v = U I
CoronixHoodie · Quantistica
$64.99
CorpuscleSticker · Quantistica
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CpteraSticker · Quantistica
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DecoherexTee · Quantistica
$29.99\rho_{01}(t) = \rho_{01}(0)\,e^{-t/\tau_D}
DehaasaSticker · Quantistica
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DelaychoiceSticker · Quantistica
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DickaSticker · Quantistica
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DiphantomHoodie · Quantistica
$64.99
Discoveries That Changed Physics Pixel Sticker SheetSticker · Quantistica
$19.99v = \frac{E}{B}
DynodraSticker · Quantistica
From $4.99
EchoaSticker · Quantistica
From $4.99
Enrico Fermi StickerSticker · Quantistica
From $4.99f(E)=\frac{1}{e^{(E-\mu)/kT}+1}
ExclusorTee · Quantistica
$29.99\psi(x_1,x_2) = \frac{1}{\sqrt{2}}\begin{vmatrix} \phi_a(x_1) & \phi_b(x_1) \\ \phi_a(x_2) & \phi_b(x_2) \end{vmatrix}
ExpulsieurSticker · Quantistica
From $4.99\mathbf{B}_{\text{inside}} = 0
FeebleaSticker · Quantistica
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FlipwardenHoodie · Quantistica
$64.99
FogplateSticker · Quantistica
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Four Pigments of SightPoster · Quantistica
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Fraunhofer's LinesPoster · Quantistica
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Graphene's παPoster · Quantistica
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HanlevaSticker · Quantistica
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Harriet Brooks: First Glimpse of Radioactive Recoil (1904)Hoodie · Quantistica
$64.99
HelicitaSticker · Quantistica
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HomestakaSticker · Quantistica
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Hydrogen 1S–2SPoster · Quantistica
From $19.99
InterferaTee · Quantistica
$29.99P = \lvert\psi_1 + \psi_2\rvert^{2} = \lvert\psi_1\rvert^{2} + \lvert\psi_2\rvert^{2} + 2\,\mathrm{Re}\!\left(\psi_1^{*}\psi_2\right)
It's All Spin Pixel Sticker SheetSticker · Quantistica
$19.99t_{\mathrm{echo}} = 2\tau
KapitzadiracSticker · Quantistica
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KochenspekTee · Quantistica
$29.99\text{18 vectors, 9 orthogonal bases, each vector in 2 bases (4 dimensions)}
LandauraSticker · Quantistica
From $4.99
LentaTee · Quantistica
$29.99v_g = \frac{c}{n + \omega\,\dfrac{dn}{d\omega}}
MagnetonixSticker · Quantistica
From $4.99
Maria Goeppert Mayer StickerSticker · Quantistica
From $4.99\begin{gathered} E_N = \hbar\omega\left(N + \tfrac{3}{2}\right) \\ \begin{aligned} g_N &= (N+1)(N+2) \\ &= 2,\,6,\,12,\,\ldots \end{aligned} \\ \Rightarrow\; \text{shells close at } 2,\,8,\,20 \end{gathered}
Marina DiracTee · Quantistica
$29.99\left(i\hbar\,\gamma^{\mu}\partial_{\mu} - mc\right)\psi = 0
MassratioSticker · Quantistica
From $4.99
Max Planck StickerSticker · Quantistica
From $4.99E = h\nu
MolassaTee · Quantistica
$29.99k_B T_D = \frac{\hbar\Gamma}{2} \qquad (\text{two-level atom, best at } \delta = -\Gamma/2)
MonopolaTee · Quantistica
$29.99e\,g = \frac{n\hbar c}{2} \qquad (\text{Gaussian units},\ n = 0, \pm1, \pm2, \dots)
NebuliaHoodie · Quantistica
$64.99
NickelaTee · Quantistica
$29.99d\sin\phi = \lambda, \quad d = 0.215\ \mathrm{nm} \ \Rightarrow\ \lambda = 0.165\ \mathrm{nm}
Niels Bohr StickerSticker · Quantistica
From $4.99\begin{gathered} E_n = -\frac{R_\infty hc}{n^{2}} \\ R_\infty hc = 13.605\,693\,122\,990\ \text{eV} \end{gathered}
AberraSticker · Relatività e cosmo
From $4.99
AreaxTee · Relatività e cosmo
$29.99A_{\text{final}} \ge A_1 + A_2
Bertozzi's Ultimate SpeedPoster · Relatività e cosmo
From $19.99
BoundaTee · Relatività e cosmo
$29.99S \le \frac{2\pi k_B R E}{\hbar c}
Cecilia Payne-Gaposchkin StickerSticker · Relatività e cosmo
From $4.99\begin{aligned} \frac{n_{i+1}\,n_e}{n_i} &= \frac{2}{\Lambda^{3}}\,\frac{g_{i+1}}{g_i} \\ &\quad\times\exp\!\left(-\frac{\chi_i}{k_B T}\right) \\ \Lambda &= \frac{h}{\sqrt{2\pi m_e k_B T}} \end{aligned}
Chandrasekhar Limit Tee: 1.4 M☉Tee · Relatività e cosmo
$29.99M_{\mathrm{Ch}} = \frac{\omega_3^{0}\sqrt{3\pi}}{2}\left(\frac{\hbar c}{G}\right)^{3/2}\frac{1}{(\mu_e m_H)^{2}} \approx \frac{5.8\,M_\odot}{\mu_e^{2}}
Chandrasekhar's LimitPoster · Relatività e cosmo
From $19.99
ChoralisTee · Relatività e cosmo
$29.99\Gamma(\theta) = \frac{1}{2} - \frac{x}{4} + \frac{3}{2}\,x\ln x, \qquad x = \frac{1-\cos\theta}{2}
Cosmic Extremes Pixel Sticker SheetSticker · Relatività e cosmo
$19.99T_H = \frac{\hbar c^{3}}{8\pi G M k_B}
Dark Matter HostTee · Relatività e cosmo
$29.99v(r)^{2} = \frac{G M(r)}{r} \;\Rightarrow\; M(r) = \frac{v^{2} r}{G}
EhrenwheelTee · Relatività e cosmo
$29.99C' = \frac{2\pi R}{\sqrt{1-\omega^{2}R^{2}/c^{2}}} > 2\pi R
Eötvös' BalancePoster · Relatività e cosmo
From $19.99
Eventide ProphetTee · Relatività e cosmo
$29.99T_H = \frac{\hbar c^{3}}{8\pi G M k_B}
FaintsolSticker · Relatività e cosmo
From $4.99
FermiaTee · Relatività e cosmo
$29.99N = R_{*}\cdot f_p \cdot n_e \cdot f_l \cdot f_i \cdot f_c \cdot L
Fizeau's Moving WaterPoster · Relatività e cosmo
From $19.99
Fizeau's Toothed WheelPoster · Relatività e cosmo
From $19.99
Friedmann's Three FatesPoster · Relatività e cosmo
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Fritz Zwicky StickerSticker · Relatività e cosmo
From $4.99\sigma^2 \sim \frac{GM}{R}
GamowynTee · Relatività e cosmo
$29.99\text{rate} \propto e^{-E/kT}\, e^{-\sqrt{E_G/E}}
Graviton WhisperTee · Relatività e cosmo
$29.99\Box\,\bar h_{\mu\nu} = -\frac{16\pi G}{c^{4}}\,T_{\mu\nu}
Gravity Probe BPoster · Relatività e cosmo
From $19.99
Henrietta Swan Leavitt StickerSticker · Relatività e cosmo
From $4.99M_V = -2.43\,(\log_{10} P - 1) - 4.05
Ives–StilwellPoster · Relatività e cosmo
From $19.99
JetlaggaTee · Relatività e cosmo
$29.99\text{Eastward: observed } -59 \pm 10\ \mathrm{ns}, \quad \text{predicted } -40 \pm 23\ \mathrm{ns}
Jocelyn Bell Burnell StickerSticker · Relatività e cosmo
From $4.99\bar\rho \gtrsim \frac{3\pi}{G P^{2}}
KilonovaTee · Relatività e cosmo
$29.99\Delta t = 1.74 \pm 0.05\ \mathrm{s}
Leavitt's LawPoster · Relatività e cosmo
From $19.99
Light, Time & Relativity Pixel Sticker SheetSticker · Relatività e cosmo
$19.99\Delta t = \gamma\,\tau, \qquad L = \frac{L_0}{\gamma}
MagnetocondaSticker · Relatività e cosmo
From $4.99
Mercury's 43 ArcsecondsPoster · Relatività e cosmo
From $19.99
MirrorixSticker · Relatività e cosmo
From $4.99
MirrorspinSticker · Relatività e cosmo
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MuonautSticker · Relatività e cosmo
From $4.99\Delta t = \gamma\,\tau, \qquad L = \frac{L_0}{\gamma}
NocturnaTee · Relatività e cosmo
$29.99dN_{\star} \propto r^{2}\,dr, \qquad F_{\star} \propto \frac{1}{r^{2}} \ \Rightarrow\ dF_{\text{shell}} \propto dr
Null BeaconTee · Relatività e cosmo
$29.99d_{\text{EH}}(t) = a(t)\int_{t}^{\infty} \frac{c\,dt^{\prime}}{a(t^{\prime})}
Andrews' Carbonic AcidPoster · Calore ed entropia
From $19.99
ArgonixSticker · Calore ed entropia
From $4.99
BoltzbrainSticker · Calore ed entropia
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Boltzmann's Stone: Counting WPoster · Calore ed entropia
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CalorusHoodie · Calore ed entropia
$64.99
Carnot's IdealPoster · Calore ed entropia
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Critical OpalescencePoster · Calore ed entropia
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Cryo FaultTee · Calore ed entropia
$29.99\sigma_f = \sqrt{\frac{2E\gamma_s}{\pi a}}
Debye's T³Poster · Calore ed entropia
From $19.99
DilutraSticker · Calore ed entropia
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EchobelSticker · Calore ed entropia
From $4.99
ErasaTee · Calore ed entropia
$29.99\langle Q \rangle \ge k_B T \ln 2
FoldaraTee · Calore ed entropia
$29.993^{100} \approx 5\times10^{47} \ \text{shapes}
InvertiaSticker · Calore ed entropia
From $4.99\frac{1}{T} = \frac{\partial S}{\partial E} < 0
JarzaTee · Calore ed entropia
$29.99\langle e^{-\beta W}\rangle = e^{-\beta\Delta F}, \qquad \beta = \frac{1}{k_B T}
KelvinorTee · Calore ed entropia
$29.99t = \frac{T_0^{2}}{\pi\,\kappa\,G^{2}} \qquad (\text{cooling by conduction only})
Kleiber's Three-QuartersPoster · Calore ed entropia
From $19.99
Ludwig Boltzmann StickerSticker · Calore ed entropia
From $4.99S = k_B \ln W
Mercury at 4.2 KPoster · Calore ed entropia
From $19.99
Nernst's BatteryPoster · Calore ed entropia
From $19.99
Niobium's Mixed StatePoster · Calore ed entropia
From $19.99
Nitrogen at 300 KPoster · Calore ed entropia
From $19.99
AlfvenaTee · Forze e campi
$29.99v_A = \frac{B}{\sqrt{\mu_0 \rho}}
Arago's Rotating DiscPoster · Forze e campi
From $19.99
AxonaTee · Forze e campi
$29.99C_m \frac{dV}{dt} = -\bar g_{Na} m^{3}h\,(V - E_{Na}) - \bar g_{K} n^{4}(V - E_K) - g_L (V - E_L) + I
AyrthaHoodie · Forze e campi
$64.99
AzurwakeSticker · Forze e campi
From $4.99\cos\theta = \frac{1}{n\beta}, \qquad \beta > \frac{1}{n}
BarkhausaSticker · Forze e campi
From $4.99
BremsellaSticker · Forze e campi
From $4.99P = \frac{q^2 a^2}{6\pi\varepsilon_0 c^3}
Brewster's AnglePoster · Forze e campi
From $19.99
CapacitwinSticker · Forze e campi
From $4.99
CavendaTee · Forze e campi
$29.99F = \frac{G M m}{r^{2}}, \qquad \kappa\theta = F L, \qquad T = 2\pi\sqrt{\frac{I}{\kappa}}
Chadwick's NeutronPoster · Forze e campi
From $19.99
Chicago Pile-1Poster · Forze e campi
From $19.99
Chien-Shiung Wu StickerSticker · Forze e campi
From $4.99{}^{60}\mathrm{Co} \to {}^{60}\mathrm{Ni}^{*} + e^{-} + \bar\nu_e
Christiaan Huygens StickerSticker · Forze e campi
From $4.99r = v\,\Delta t
ChuannaTee · Forze e campi
$29.99\frac{dx}{dt} = \alpha\,(y - x - f(x)), \qquad \frac{dy}{dt} = x - y + z, \qquad \frac{dz}{dt} = -\beta y
Classic Lab Experiments Pixel Sticker SheetSticker · Forze e campi
$19.99F \propto -\,I_{\mathrm{coil}}\,I_{\mathrm{ring}}
CorekeeperTee · Forze e campi
$29.99V(r) = -\frac{g^{2}}{4\pi}\frac{e^{-r/\lambda}}{r}, \qquad \lambda = \frac{\hbar}{m_\pi c}
Decay DancerTee · Forze e campi
$29.99n \to p + e^{-} + \bar\nu_e
DiagonixSticker · Forze e campi
From $4.99I = I_0\cos^2\theta
DisplaceraSticker · Forze e campi
From $4.99
Émilie du Châtelet StickerSticker · Forze e campi
From $4.99\begin{gathered} E_k = \tfrac{1}{2} m v^{2} \\ (\text{vis viva: } m v^{2}) \end{gathered}
Emmy Noether StickerSticker · Forze e campi
From $4.99Q = \sum_i \frac{\partial L}{\partial \dot q_i}\,\delta q_i
EnrayneHoodie · Forze e campi
$64.99
Ernest Rutherford StickerSticker · Forze e campi
From $4.99\frac{d\sigma}{d\Omega} = \left(\frac{zZe^2}{16\pi\varepsilon_0 E}\right)^2\frac{1}{\sin^4(\theta/2)}
FaradraSticker · Forze e campi
From $4.99
Fields Forever Pixel Sticker SheetSticker · Forze e campi
$19.99V(t) = V_0\sin(\omega t)
Forces & Fields Vol. 1 Pixel Sticker SheetSticker · Forze e campi
$19.99\cos\theta = \frac{1}{n\beta}, \qquad \beta > \frac{1}{n}
Forces & Fields Vol. 2 Pixel Sticker SheetSticker · Forze e campi
$19.99p_{\mathrm{Minkowski}} = \frac{n\hbar\omega}{c},\quad p_{\mathrm{Abraham}} = \frac{\hbar\omega}{n c}
Galileo Galilei StickerSticker · Forze e campi
From $4.99d = \tfrac{1}{2}g t^{2}
GalvanaSticker · Forze e campi
From $4.99
Geiger–NuttallPoster · Forze e campi
From $19.99
GluebaTee · Forze e campi
$29.99\text{Prove: quantum Yang–Mills theory exists on } \mathbb{R}^{4} \text{ with mass gap } \Delta > 0
GravitasSticker · Forze e campi
From $4.99
GyrollaSticker · Forze e campi
From $4.99q v B = \frac{m v^2}{r} \;\Rightarrow\; r = \frac{m v}{q B}
Hadron BrawlerTee · Forze e campi
$29.99V(r) = -\frac{4}{3}\frac{\alpha_s \hbar c}{r} + \sigma r
Hertz's SparkPoster · Forze e campi
From $19.99
Hideki Yukawa StickerSticker · Forze e campi
From $4.99\begin{gathered} V(r) = -\frac{g^{2}}{4\pi}\,\frac{e^{-r/R}}{r} \\ R = \frac{\hbar}{m c} \end{gathered}
HomopoleTee · Forze e campi
$29.99\mathcal{E} = \int (\mathbf{v}\times\mathbf{B})\cdot d\mathbf{r} = \tfrac{1}{2} B\,\omega R^{2}
IgniaTee · Forze e campi
$29.99n\,T\,\tau_E \gtrsim 3\times10^{21}\ \mathrm{keV\,s\,m^{-3}} \quad (\text{D-T ignition; lowest near } T \approx 14\ \mathrm{keV})
InertixSticker · Forze e campi
From $4.99
Isaac Newton StickerSticker · Forze e campi
From $4.99\vec F = \frac{d\vec p}{dt}
James Clerk Maxwell StickerSticker · Forze e campi
From $4.99\nabla\cdot\vec E = \frac{\rho}{\varepsilon_0}, \quad \nabla\cdot\vec B = 0
JumpringSticker · Forze e campi
From $4.99
KibblaSticker · Forze e campi
From $4.99
LenzorSticker · Forze e campi
From $4.99\mathcal{E} = -\frac{d\Phi_B}{dt}
LeydeniaSticker · Forze e campi
From $4.99
LibratrixSticker · Forze e campi
From $4.99r_{L2} \approx R\left(\frac{M_2}{3M_1}\right)^{1/3}
Lise Meitner StickerSticker · Forze e campi
From $4.99Q = \left(M_{\text{initial}} - M_{\text{final}}\right)c^{2}
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$29.99\oint \mathbf{E}\cdot d\mathbf{l} = -\frac{d\Phi_B}{dt}
Magnetron TwinsTee · Forze e campi
$29.99U = -\frac{\mu_0}{4\pi r^{3}}\left[3(\vec m_1\cdot\hat r)(\vec m_2\cdot\hat r) - \vec m_1\cdot\vec m_2\right]
Marie Curie StickerSticker · Forze e campi
From $4.99N(t) = N_0 e^{-\lambda t}
Michael Faraday StickerSticker · Forze e campi
From $4.99\oint_S \vec E\cdot d\vec A = \frac{Q_{\text{enc}}}{\varepsilon_0}
MinkowskaraSticker · Forze e campi
From $4.99
ModeronSticker · Forze e campi
From $4.99\alpha = \left(\frac{A-1}{A+1}\right)^2
MossbraTee · Forze e campi
$29.99E_R = \frac{E_\gamma^{2}}{2Mc^{2}}
Neutrina FadeTee · Forze e campi
$29.99\cos\theta_C = \frac{1}{n\beta}
Nikola Tesla StickerSticker · Forze e campi
From $4.99V(t) = V_0\sin(\omega t)
AdiabatixSticker · Onde, caos e materia
From $4.99
AragoTee · Onde, caos e materia
$29.99N_F = \frac{a^{2}}{\lambda L}
Arnold's CatTee · Onde, caos e materia
$29.99\Gamma:\ (x, y) \mapsto (x + y,\ x + 2y) \bmod 1
Atwood's MachinePoster · Onde, caos e materia
From $19.99
AureaTee · Onde, caos e materia
$29.99|\mathbf{k}\cdot\boldsymbol{\omega}| \ge \frac{\gamma}{|\mathbf{k}|^{\tau}}
BertrandeTee · Onde, caos e materia
$29.99F = -\frac{k}{r^{2}} \quad \text{or} \quad F = -k\,r
BraessaSticker · Onde, caos e materia
From $4.99
BuckettaSticker · Onde, caos e materia
From $4.99
CandelorSticker · Onde, caos e materia
From $4.99
CeltrixTee · Onde, caos e materia
$29.99\frac{d\mathbf{L}}{dt} = \mathbf{r}_c \times \mathbf{F}_c
ChainfountSticker · Onde, caos e materia
From $4.99
CheeriosaSticker · Onde, caos e materia
From $4.99
Chimella, the Hot-Chocolate Bell MugMug · Onde, caos e materia
$21.99\frac{1}{\rho c^{2}} = \frac{1-\phi}{\rho_l c_l^{2}} + \frac{\phi}{\rho_g c_g^{2}}
Classical Physics Vol. 1 Pixel Sticker SheetSticker · Onde, caos e materia
$19.99J = \oint p\,\mathrm{d}q
Classical Physics Vol. 2 Pixel Sticker SheetSticker · Onde, caos e materia
$19.99\mathbf{F}_M = \alpha\,\boldsymbol{\omega}\times\mathbf{v}
Classical Physics Vol. 4 Pixel Sticker SheetSticker · Onde, caos e materia
$19.99\mathrm{Fr} = \frac{v}{\sqrt{g h}}
Colladon's BellPoster · Onde, caos e materia
From $19.99
CoriolixSticker · Onde, caos e materia
From $4.99\mathbf{a}' = -2\,\boldsymbol{\Omega}\times\mathbf{v}' - \boldsymbol{\Omega}\times(\boldsymbol{\Omega}\times\mathbf{r}')
DalembertiaSticker · Onde, caos e materia
From $4.99
Deep-Water DispersionPoster · Onde, caos e materia
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Duffing's Strange AttractorPoster · Onde, caos e materia
From $19.99
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$29.99u + iv = V_0\,e^{i\pi/4}\,e^{(1+i)z/D}, \qquad z \le 0
Everyday Physics Pixel Sticker SheetSticker · Onde, caos e materia
$19.99\ell_c = \sqrt{\frac{\gamma}{\rho g}}
Faraday's RipplesPoster · Onde, caos e materia
From $19.99
FlagellaTee · Onde, caos e materia
$29.99F = A v + B\Omega, \qquad N = B v + D\Omega
HalotraSticker · Onde, caos e materia
From $4.99
HeliaTee · Onde, caos e materia
$29.99H = \tfrac{1}{2}\left(p_x^{2} + p_y^{2}\right) + \tfrac{1}{2}\left(x^{2} + y^{2}\right) + x^{2}y - \tfrac{1}{3}y^{3}
Helmholtz's BottlePoster · Onde, caos e materia
From $19.99
HemispheraSticker · Onde, caos e materia
From $4.99
InfraraSticker · Onde, caos e materia
From $4.99
JanssenaSticker · Onde, caos e materia
From $4.99
Kater's Reversible PendulumPoster · Onde, caos e materia
From $19.99
KayellaTee · Onde, caos e materia
$29.99\eta = K\,\dot{\gamma}^{\,n-1}, \qquad n < 1 \ (\text{shear-thinning})
KinessaTee · Onde, caos e materia
$29.99W = F \times d = 6\ \mathrm{pN} \times 8\ \mathrm{nm} = 48\ \mathrm{pN\,nm}
Kundt's TubePoster · Onde, caos e materia
From $19.99
LangmuiraSticker · Onde, caos e materia
From $4.99
LevitahTee · Onde, caos e materia
$29.99U = \frac{4\pi}{3}a^{3}\left[f_1\,\tfrac{1}{2}\kappa_0\langle p^{2}\rangle - f_2\,\tfrac{3}{4}\rho_0\langle v^{2}\rangle\right]
Light & Optics Pixel Sticker SheetSticker · Onde, caos e materia
$19.99I_s \propto \frac{1}{\lambda^4}
MagnaraSticker · Onde, caos e materia
From $4.99\mathbf{F}_M = \alpha\,\boldsymbol{\omega}\times\mathbf{v}
MeldeaSticker · Onde, caos e materia
From $4.99
Minnaert's BubblePoster · Onde, caos e materia
From $19.99
MurmuraTee · Onde, caos e materia
$29.992\pi R \approx m\lambda \qquad (m \text{ large})
NaviaTee · Onde, caos e materia
$29.99\rho\left(\frac{\partial \mathbf{u}}{\partial t} + (\mathbf{u}\cdot\nabla)\mathbf{u}\right) = -\nabla p + \mu\nabla^{2}\mathbf{u}
NicoletteSticker · Onde, caos e materia
From $4.99
Noether's LedgerPoster · Onde, caos e materia
From $19.99
Adiabram, the Slow-Change Shepherd MugMug
$21.99T_{\text{change}} \gg \frac{\hbar}{\Delta E}
Aliasyne, the Undersampled Twin MugMug
$21.99f_s > 2 f_{\max}
Asymptor, the Last-Step Knight MugMug
$21.99\lim_{T \to 0} \Delta S = 0
Avergail, the Mean-Field Courtier MugMug
$21.99B_{\text{eff}} = B + \lambda M
Backglowen, the Sky-Limited Lantern MugMug
$21.99\text{SNR} \propto \sqrt{t} \quad \text{(sky-limited)}
Backrowena, the Broken-Symmetry Usher MugMug
$21.99V(\phi) = -\mu^{2}|\phi|^{2} + \lambda |\phi|^{4}
Barrierwyn, the Escape-Rate Climber MugMug
$21.99k \propto e^{-\Delta E / k_B T}
Beaconess, the Laser-Star Maker MugMug
$21.99E = \frac{hc}{\lambda}
Boundraith, the Mismatched Border Wraith MugMug
$21.99R_K \propto T^{-3}
Broadling, the Short-Lived Herald MugMug
$21.99\Gamma = \frac{\hbar}{\tau}
Chivelle, the Too-Good-Fit Inquisitor MugMug
$21.99\frac{\chi^{2}}{\nu} \approx 1
Clustrelle, the Cheerios-Effect Gatherer MugMug
$21.99\ell_c = \sqrt{\frac{\gamma}{\rho g}}
Counterterra, the Renormalising Smith MugMug
$21.99m = m_0 + \delta m
Creamward, the Milk-First Alchemist MugMug
$21.99\frac{dT}{dt} = -k\,(T - T_{\text{env}})
Cryoselle, Abbess of the Twenty Millikelvin MugMug
$21.99\bar n = \frac{1}{e^{hf/kT} - 1}
Decouplarch, the Two-Timescale Diplomat MugMug
$21.99\Psi(\mathbf{r},\mathbf{R}) \approx \psi_{\mathbf{R}}(\mathbf{r})\, \chi(\mathbf{R})
Degreeda, the Equipartition Dreamer MugMug
$21.99\langle E \rangle = \tfrac{1}{2} k_B T \quad \text{per quadratic degree of freedom}
Densara, the Final-State Cartographer MugMug
$21.99\Gamma = \frac{2\pi}{\hbar}\, |M|^{2}\, \rho(E_f)
Dissipar, the Fidgeting Oracle MugMug
$21.99\langle V^{2} \rangle = 4 k_B T R\, \Delta f
Distalis, the Far-Field Back-Row Watcher MugMug
$21.99U(x,y) \propto \iint A(\xi,\eta)\, e^{-i\frac{2\pi}{\lambda z}(x\xi + y\eta)}\, d\xi\, d\eta
Driftgale, the Thermal-Drift Wind Spirit MugMug
$21.99\Delta L = \alpha L\, \Delta T
Drycrest, the Water-Vapour Hermit MugMug
$21.99\text{PWV} = \frac{1}{\rho_w g}\int_0^{p_s} q\, dp
Duskward, the Astronomical-Twilight Warden MugMug
$21.99h_\odot = -18^\circ \quad \text{(end of astronomical twilight)}
Endoreva, the Max-Power Engine MugMug
$21.99\eta = 1 - \sqrt{\frac{T_c}{T_h}}
Epochra, the Precession Navigator MugMug
$21.99p_A \approx 5028.796195''\ \text{per Julian century} \approx 50.3''\,\text{yr}^{-1}
Flickermoth, the Pink-Noise Moth Queen MugMug
$21.99S(f) \propto \frac{1}{f^{\alpha}}, \qquad \alpha \approx 1
Flukessa, the Second-Law Rebel MugMug
$21.99\frac{P(\Sigma_t = A)}{P(\Sigma_t = -A)} = e^{A t}
Harmonel, the Green-Pointer Imp MugMug
$21.99\omega_{\text{out}} = 2\,\omega_{\text{in}} \;\Leftrightarrow\; \lambda_{\text{out}} = \frac{\lambda_{\text{in}}}{2}
Islandine, the Coulomb-Blockade Gatekeeper MugMug
$21.99E_C = \frac{e^{2}}{2C} \gg k_B T
Lunelock, the Tidally Locked Speaker MugMug
$21.99P_{\text{rot}} = P_{\text{orb}}
Magnidra, the Pogson Scale Keeper MugMug
$21.99m_1 - m_2 = -2.5 \log_{10}\!\left(\frac{F_1}{F_2}\right)
Nightglowe, the Airglow Sleepwalker MugMug
$21.99\text{H} + \text{O}_3 \to \text{OH}(v \le 9) + \text{O}_2
Nimbryn, the Mie-Scattering Grey Lady MugMug
$21.99x = \frac{2\pi r}{\lambda} \gg 1 \;\Rightarrow\; Q_{\text{ext}} \to 2
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