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Something for Nothing
There’s no such thing as a free lunch.’― The second law of Thermodynamics
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The fate of a star
The star, like the Cheshire Cat, fades from view. One leaves behind only its grin, the other, only its gravitational attraction.’― John Archibald Wheeler
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The Nature of Vacuum
To physicists, vacuum has all particles and forces latent in it. It is a far richer substance than the philosopher’s nothing.’― Sir Martin Rees
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Divine numbers
God made integers, all the rest is the work of man.’― Leopold Kronecker
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The nature of man
‘What is man in nature ? Nothing in relation to the infinite, everything in relation to nothing, a mean between nothing and everything.’― Blaise Pascal
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First rides in the wet with Pinion and carbon belt
With the weather turning wet I had my first couple of commutes in the rain on my new bike with Pinion gears and a carbon belt. On my previous bike a ride in such conditions would mean cleaning and greasing the chain again or suffering a screeching chain on the next ride with a loss off efficiency in transferring muscle power to motion. For that reason I went for a belt on my new bike. And I have to say the first experience doesn’t disappoint. No cleaning and greasing obviously and no impact at all on the ride quality or…
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No Time To Die
Yesterday I watched the latest James Bond instalment on tv with the kids. We had an unexpected free Saturday evening with everyone home and no early Sunday hockey appointments so we took the opportunity to watch this more than two and a half hour long movie. This is apparently the 25th JB movie and I was curious to see if I would like the movie as the reception was a bit mixed with some not liking the story much. I wasn’t disappointed myself. The movie builds on the story and characters introduced in Spectre and I personally like No Time…
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The Abacus
The abacus has been around since ancient times and apparently is still used in some places. The abacus was once widely used and is known as soroban in Japan, suan pan in China, schoty in Russia, coulba in Turkey and choreb in Armenia for example. Maybe it would be fun to introduce them again into the classroom and use it to teach a bit of history and to organise speed calculation competitions between teams using an abacus and ones using pen and paper. As you surely know the abacus uses sliding stones to count but you may not know like…
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