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    Cover of Sail power

    Sail power

    Wallace Ross · 1975

    Food, Travel & Lifestyle
    Open LibraryAmazon
    Stats for nerds
    1recommend
    2mentions
    2people
    2014–2015years
    50% recommend50% neutral

    Mentions per year

    20142015

    What Hacker News says

    1. joshuaheardOct 2014
      This is a good start, but the physics of sailing is much more complex than presented in your app. For instance, a sailboat is not powered by the wind pushing on the sail.

      It works like this. The wind is split by the leading edge of the sail (the mast, headstay, or luff). It is split into two turbulent streams, one on each side of the sail. One stream has slightly less force on the sail so the sail begins to move in that direction. As the flow stabilizes over that side, the wind moves faster on that side than on the turbulent side. This creates lift like an airplane wing. So the wind is actually pulling the sail, not pushing it.

      Lift on the sail causes the boat to heel (lean over). Some of the lifting force is counterbalanced by the keel underwater keeping the boat upright. The remainder of the force pushes the boat downwind. However, the flat keel underwater prevents the boat from sliding downwind, with the result that the boat is forced forward.

      I recommend you read this book for your next version:

      http://www.amazon.com/Sail-Power-Complete-Guide-Handling/dp/...

      thread
    2. laxativesDec 2015
      The Memory Book - Fantastic, maybe not always practical unless you have a lot of practice, but extremely useful to at least understand some of the strategies to memorizing strings

      Understanding Weatherfax - for an attempted (and failed) circumnavigation

      Sail Power

      Kon Tiki

      Shogun

      Art of the Sailor

      Business Adventures

      Metamorphoses (by Ovid, not Kafka)

      Guns, Germs, Steel

      Curious Incident of the Dog in the Night Time - this book had so many rave reviews. it has a tremendous hook and style for the first 50 pages, but overall I thought it was terrible

      Cryptonomicon -- fantastic

      Simulacra and simulation -- started, but I need to start over. this is not an easy read...

      Predictably Irrational -- another book with great reviews, but reading this book was not time well spent. the author just summarizes psychology experiments with pages of dumbed down explanations and tedious anecdotes

      The Alliance -- read this on my last day at my old job, a good reminder on the social contract between you and your employer and how it should be mutually beneficial, lots of boring filler though

      Triple your reading speed -- I wanted to take a speed reading course when I was in elementary school, but my dad thought it was a waste of time. I think I really missed out on something, but late is better than never.

      Siddhartha -- rereading of one of my favorite books of all time

      The Alchemist -- rereading of one of my favorite books of all time

      Jazz (by Leveaux)

      The Jazz Piano Book

      Mastering the Piano

      Big Blue Book of bicycle maintenance

      Probability (by Pitman) -- its embarassing statistics/probability isn't a required course in many programs

      Elements of Statistical Learning

      Advanced Analytics with Spark -- feels like this book was published only 80% done

      Optimization Models (by Calafiore and El Ghaoui) -- going to finish this is 2016

      Functional Programming with Scala -- going to finish this is 2016

      Linux Programming Interface -- going to finish this is 2016

      Finished 18 books cover to cover in 2015, 6 of which were textbooks/academic texts. Currently have 7 in progress, 2 of which are piano workbooks and 3 are textbooks.

      Goal for 2016 is 30 books cover to cover, at least 8 textbooks/academic texts.

      thread

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