{"product_id":"downwind-faster-than-the-wind-nicholas-landell-mills-9781912724246","title":"Downwind faster than the wind","description":"\u003cp\u003eNew analysis shows how Newton and Galileo provide a straightforward and useful explanation of sailing.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eAccording to Newton, the sail re-directs a mass of air of the apparent wind backwards to create a backward force (Force = ma). The reactive equal and opposite forward force pushes the sailboat ahead. \u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eAccording to Galileo a boat can sail downwind faster than the wind for the same reasons that it can sail upwind faster than the wind. Each tack is simply the mirror image of the other one. This is because in both situations the sailboat experiences a headwind, and the true wind is moving backwards relative to the boat. \u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eWhen sailing both upwind and downwind, the sail extracts momentum and energy from the true wind by slowing it down. That's it. \u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Nicholas Landell-Mills\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1912724243\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781912724246\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Boatswain Books\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 08\/02\/2021\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 132\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.30lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 8.00h x 5.00w x 0.28d","brand":"Nicholas Landell-Mills","offers":[{"title":"Paperback","offer_id":48519619838207,"sku":"9781912724246","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_a3e810f1-1f53-45aa-80ea-4faecf384a1b.jpg?v=1778737860","url":"https:\/\/www.whiterainbookhouse.com\/products\/downwind-faster-than-the-wind-nicholas-landell-mills-9781912724246","provider":"WR Book House","version":"1.0","type":"link"}