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Bernard M -- Taipei English Tutor

Bernard M - English Conversation / TOEFL / IELTS 一對一英文會話

Sunday, May 28, 2017

Verge Escapement or Crown-wheel Escapement

A type of escapement used in most clocks until the invention of the more accurate ancre escapement in the 1670s. It was first drawn up by Giovanni da Dondi, Paduan professor, in 1364. It comprises a toothed wheel and a verge (shaft), with two pallets released in turn by a foliot (large horizontal bar) or balance (wheel)._

Judith Miller. The Illustrated Dictionary of Antiques & Collectibles. Bullfinch Press Book_Marshall Editions Development, 2001

Apparently this was one of the few key European inventions not totally borrowed or inspired by China. Su Song's [子容[1] 1020–1101 AD] astronomical clock tower already used an escapement, but according to Carlo Cipolla the two inventions "had nothing in common"  [quoted in Cathedral, Forge, and Waterwheel by Frances and Joseph Gies]

Thursday, May 25, 2017

Battle Hymn of the Tiger Mother explained by its author Amy Chua

"I wrote this book in a moment of crisis, when my younger daughter seemed to turn against everything I stood for and it felt like I was losing her and everything was falling apart.  After one terrible fight, I sat down at my computer, and even though I usually have writer’s block, this time the words just poured out.  I showed every page to my daughters and my husband.  It was like family therapy.  In retrospect, I think writing the book – going back eighteen years when my elder daughter was born and I was a very different person – was an attempt to put the pieces back together and work things out for myself . . . and the story is unfinished!"

I'd be happy to lend you the book, if you are interested.

Watson Proving Better Than Doctors at Diagnosing Cancer by Michael Feldman FROM

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