{"product_id":"field-lines-pixel-hoodie","title":"Field Lines Hoodie – START POSITIVE | Pixelated Physics","description":"\u003cp\u003eFour charges sit on the corners of a square: plus, minus, plus, minus. Total charge zero. Total dipole moment zero too. What is left is a quadrupole. The exact field of an electric quadrupole, +q −q +q −q. Every line leaves a positive charge, ends on a negative one. Net charge zero. Pixel-art unisex hoodie in black; equation, symbols and sources in the physics panel below.\u003c\/p\u003e","brand":"PixelatedPhysics","offers":[{"title":"Black \/ S","offer_id":50409645736039,"sku":"20411706540949114603","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ M","offer_id":50409645768807,"sku":"73082560942721432499","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ L","offer_id":50409645801575,"sku":"29988634328897424908","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ XL","offer_id":50409645834343,"sku":"13656489791661740331","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 2XL","offer_id":50409645867111,"sku":"33944592502708140963","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 3XL","offer_id":50409645899879,"sku":"29226597466015695643","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 4XL","offer_id":50409645932647,"sku":"31908000119923392676","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 5XL","offer_id":50409645965415,"sku":"24820476940365250582","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/01_model_front_close_b7148743-eb66-4a4e-85db-816047bdd742.jpg?v=1791602497","url":"https:\/\/pixelatedphysics.com\/products\/field-lines-pixel-hoodie","provider":"Pixelated Physics","version":"1.0","type":"link"}