{"product_id":"eotvos-balance-plate-032-physics-poster","title":"Eötvös' Balance – Plate 032 Physics Poster","description":"\u003cp\u003ePlate 32 speaks for itself: \u003cem\u003e“Snakewood and platinum fall alike.”\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eThe Physics\u003c\/h3\u003e\u003cp\u003eEötvös used a torsion balance to compare how gravity and Earth's rotation act on different materials. Any difference between inertial and gravitational mass would twist the beam; none was seen.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eη \u0026lt; 10⁻⁸\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eη: fractional difference in acceleration of two materials, dimensionless\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e1889: equal to 1 part in 20 000 000. Full paper 1922; work shown in 1909.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHonest caveat:\u003c\/em\u003e The η \u0026lt; 10⁻⁸ bound is conservative: the 1889 work reached 1 part in 2×10⁷ (5×10⁻⁸), and the 1922 Eötvös–Pekár–Fekete paper tightened it to a few parts in 10⁹.\u003c\/p\u003e\u003ch3\u003eSources\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eR. v. Eötvös, D. Pekár, E. Fekete, Ann. Phys. 373, 11 (1922).\u003c\/li\u003e\n\u003cli\u003eC. M. Will, Living Rev. Relativ. 17, 4 (2014).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOn the poster\u003c\/h3\u003e\u003cp\u003ePlate 032, “Eötvös' Balance”: the pixel-art plate with its slogan “Snakewood and platinum fall alike.”, the key equation and the facts panel shown above. Pixelated Physics. Physics. Personified.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"9'' x 12\" (Vertical) \/ Matte","offer_id":50961879072871,"sku":"10354470355957784417","price":19.99,"currency_code":"USD","in_stock":true},{"title":"9'' x 12\" (Vertical) \/ Fine Art","offer_id":50961879105639,"sku":"73783844804204369149","price":29.99,"currency_code":"USD","in_stock":true},{"title":"9'' x 12\" (Vertical) \/ Semi Glossy","offer_id":50961879138407,"sku":"17641659075728433719","price":19.99,"currency_code":"USD","in_stock":true},{"title":"18″ x 24″ (Vertical) \/ Fine Art","offer_id":50961879171175,"sku":"10150014162867842673","price":44.99,"currency_code":"USD","in_stock":true},{"title":"18″ x 24″ (Vertical) \/ Semi Glossy","offer_id":50961879203943,"sku":"24618491242722963908","price":29.99,"currency_code":"USD","in_stock":true},{"title":"18″ x 24″ (Vertical) \/ Matte","offer_id":50961879236711,"sku":"27026078734662194088","price":29.99,"currency_code":"USD","in_stock":true},{"title":"36'' x 48\" (Vertical) \/ Matte","offer_id":50961879269479,"sku":"12651537551533395626","price":69.99,"currency_code":"USD","in_stock":true},{"title":"36'' x 48\" (Vertical) \/ Fine Art","offer_id":50961879302247,"sku":"12161317508207608262","price":119.99,"currency_code":"USD","in_stock":true},{"title":"36'' x 48\" (Vertical) \/ Semi Glossy","offer_id":50961879335015,"sku":"17558066940814527040","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/1144013110963045990_2048.jpg?v=1793633610","url":"https:\/\/pixelatedphysics.com\/products\/eotvos-balance-plate-032-physics-poster","provider":"Pixelated Physics","version":"1.0","type":"link"}