{"product_id":"the-pp-i-chain-plate-069-physics-poster","title":"The pp-I Chain – Plate 069 Physics Poster","description":"\u003cp\u003ePlate 69 speaks for itself: \u003cem\u003e“Four in, one out.”\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eThe Physics\u003c\/h3\u003e\u003cp\u003eIn the Sun's core, four protons become one helium-4 nucleus through the proton–proton chain. The mass difference is released as energy, a little of it carried off by neutrinos.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e4p + 2e⁻ → ⁴He + 2ν_e\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ep: proton\u003c\/li\u003e\n\u003cli\u003ee⁻: electron\u003c\/li\u003e\n\u003cli\u003e⁴He: helium-4 nucleus\u003c\/li\u003e\n\u003cli\u003eν_e: electron neutrino\u003c\/li\u003e\n\u003cli\u003eQ: energy released, J (quoted in MeV)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eQ = 26.73 MeV in total. Solar core ≈ 1.57×10⁷ K.\u003c\/p\u003e\u003ch3\u003eSources\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eH. A. Bethe, Phys. Rev. 55, 434 (1939).\u003c\/li\u003e\n\u003cli\u003eJ. N. Bahcall, Neutrino Astrophysics (1989).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOn the poster\u003c\/h3\u003e\u003cp\u003ePlate 069, “The pp-I Chain”: the pixel-art plate with its slogan “Four in, one out.”, 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":50962641518695,"sku":"30185852365195570249","price":19.99,"currency_code":"USD","in_stock":true},{"title":"9'' x 12\" (Vertical) \/ Fine Art","offer_id":50962641551463,"sku":"13990135205008883272","price":29.99,"currency_code":"USD","in_stock":true},{"title":"9'' x 12\" (Vertical) \/ Semi Glossy","offer_id":50962641584231,"sku":"24104782231452032915","price":19.99,"currency_code":"USD","in_stock":true},{"title":"18″ x 24″ (Vertical) \/ Fine Art","offer_id":50962641616999,"sku":"11703485026881503013","price":44.99,"currency_code":"USD","in_stock":true},{"title":"18″ x 24″ (Vertical) \/ Semi Glossy","offer_id":50962641649767,"sku":"46565172804525845853","price":29.99,"currency_code":"USD","in_stock":true},{"title":"18″ x 24″ (Vertical) \/ Matte","offer_id":50962641682535,"sku":"40026397701797909728","price":29.99,"currency_code":"USD","in_stock":true},{"title":"36'' x 48\" (Vertical) \/ Matte","offer_id":50962641715303,"sku":"15192498434390351997","price":69.99,"currency_code":"USD","in_stock":true},{"title":"36'' x 48\" (Vertical) \/ Fine Art","offer_id":50962641748071,"sku":"27404274075291681768","price":119.99,"currency_code":"USD","in_stock":true},{"title":"36'' x 48\" (Vertical) \/ Semi Glossy","offer_id":50962641780839,"sku":"16888872778578511158","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/13875735078862409868_2048.jpg?v=1793635393","url":"https:\/\/pixelatedphysics.com\/pl\/products\/the-pp-i-chain-plate-069-physics-poster","provider":"Pixelated Physics","version":"1.0","type":"link"}