{"product_id":"explore-alliance-presents-how-do-you-know-episode-17-measuring-the-earth-s-rotation","title":"Explore Alliance Presents: How Do You KNOW? – Episode #17: 'Measuring the Earth’s Rotation'","description":"\u003cdiv class=\"page\" title=\"Page 1\"\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cdiv title=\"Page 1\" class=\"page\"\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\n\u003cp\u003e\u003cspan\u003eThere is a misconception that ‘doing real astronomy’ is difficult and expensive, only highly \u003c\/span\u003e\u003cspan\u003etrained and generously funded people can do it; the entire \u003c\/span\u003e\u003cspan\u003eHow Do You Know? \u003c\/span\u003e\u003cspan\u003eseries is \u003c\/span\u003e\u003cspan\u003edesigned to show that both of these ideas are false. Measuring the length of Earth's day i\u003c\/span\u003e\u003cspan\u003es simple enough that a seven year old can do it in their own backyard with a little parental help. \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eIn this presentation of \u003cmeta charset=\"utf-8\"\u003eof  'How Do You KNOW?', \u003cmeta charset=\"utf-8\"\u003eDr. Barth shows how to measure the the Moon’s motion, and with this data we can use these measurements to calculate the length of the Earth’s day.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/explorescientificusa.com\/pages\/explore-alliance-presents-how-do-you-know-with-dr-daniel-barth\" title=\"How Do You KNOW? Index of Programs\"\u003eReturn to the How Do You KNOW? index of programs\u003c\/a\u003e. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv title=\"Page 1\" class=\"page\"\u003e\n\u003cdiv class=\"layoutArea\"\u003e\n\u003cdiv class=\"column\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":46518262071436,"sku":"sku-40098370486444","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/5858\/0876\/files\/HowDoYouKnow_COLORcopy_6b4743ec-7447-4aba-86fa-93e744686659.png?v=1772695480","url":"https:\/\/gobekusa.com\/products\/explore-alliance-presents-how-do-you-know-episode-17-measuring-the-earth-s-rotation","provider":"GobekUSA","version":"1.0","type":"link"}