{"product_id":"henrietta-swan-leavitt-sticker-the-blink-is-the-ruler-physics-sticker","title":"Henrietta Swan Leavitt Sticker – The Blink Is the Ruler | Physics Sticker","description":"\u003cp\u003eHow do you measure the distance to a galaxy? At Harvard in 1908–1912, Henrietta Swan Leavitt found that Cepheid variable stars in the Small Magellanic Cloud which pulse more slowly are brighter. Time a Cepheid’s blink, infer its true brightness, compare with how faint it looks, and you have its distance. A 3\" pixel-art physicist sticker; equation, symbols and sources in the physics panel below.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"2\" × 2\" \/ White","offer_id":50654994661479,"sku":"28564345134331734303","price":4.99,"currency_code":"USD","in_stock":true},{"title":"3\" × 3\" \/ White","offer_id":50421765865575,"sku":"49183532056265650350","price":6.99,"currency_code":"USD","in_stock":true},{"title":"4\" × 4\" \/ White","offer_id":50654994694247,"sku":"16464743623955934014","price":8.99,"currency_code":"USD","in_stock":true},{"title":"6\" × 6\" \/ White","offer_id":50654994727015,"sku":"15794810587669246246","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/16943772439145015066_1200.jpg?v=1793659790","url":"https:\/\/pixelatedphysics.com\/fr\/products\/henrietta-swan-leavitt-sticker-the-blink-is-the-ruler-physics-sticker","provider":"Pixelated Physics","version":"1.0","type":"link"}