Month: April 2012
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Google’s Employment Applicant’s Hourglass Problem
Ref: March 2012 issue of Wired magazine. It seems the Google job interview process requires a problem to be solved. I’ll take this hourglass problem, “Using only a four-minute hourglass and a seven-minute hourglass, measure exactly nine minutes.” Solution Principle: Use one hourglass to measure out a smaller amount of time on the other hourglass. Repeat until…
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Rolling Resistance of Bicycle Tyres
For those who ride bicycles to work, the rolling resistance of bicycle tyres may be of interest. So check out Terry Morse’s web page.
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Should You Worry About Your Bath Overflowing?
Introduction Bragging bath owner, “Me, worry about my bath overflowing? It’s got an overflow pipe. I shan’t worry.” Plumber, “Oh! Has it? Well I would still worry.” Why you DO NEED to worry about your bath overflowing? I know someone who has had a bad experience with a bath overflowing, but it wasn’t their bath…
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Goldfinches Feeding In My Garden
Introduction I can’t tell you how pleased I am to have goldfinches feeding in my garden regularly now I have erected a nyjer seed feeder. See this one in my feature image. A friend across the road has goldfinches feeding regularly but I never have. Why? They never had anything to feed on in my garden. So I…