PeeCleemens
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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…
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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…
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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…
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The Birth of Zero
‘In the history of culture the discovery of zero will always stand out as one of the greatest single achievements of the human race.’― Tobias Danzig, Number: The Language of Science
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Life without Zero
‘The point about zero is that we don’t need to use it in the operations of daily life. No one goes out to buy zero fish. It is in a way the most civilised of all the cardinals, and its use is only forced on us by the needs of cultivated modes of thought.’― Alfred North…
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Life Is Simple, JohnJoe McFadden (ISBN 978-1-529-36495-8, Basic Books)
I started reading this book at the end of August and only just finished it yesterday. My wife bought it at Dominicanen in Maastricht during our visit there in July and read it on vacation. She asked me to read it as well so we could exchange thoughts about it. The book is a history…
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