How thick is the earth’s crust?

I started researching this question so that I could present the answer in the simple format that I try to use for the school blog. But then I got drawn into the whole world of continental drift, tectonic plates, earthquakes, volcanoes and lots more. It is fascinating and I will…

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A riddle with 3 possible answers

When I went for my interview for possible admission to London University, the interviewer asked me to state Archimedes’ Principle. It goes like this “When a body is immersed in a fluid, the upthrust is equal to the weight of the fluid displaced”. Hey, I was thinking this is going…

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How to tell the gender of an Italian word

Sometime back I wrote about “Springett’s Rule of Gender“. It was my discovery when I was learning French and my French teacher, a Parisian language graduate, couldn’t tell me how the French people know whether a new noun is masculine or feminine. I’ve often wondered whether the rule might…

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