#1781 Why do scientists disagree about how siphons work?

Why do scientists disagree about how siphons work? Scientists understand exactly how siphons behave, but there is an ongoing debate over which physical principle deserves most of the credit. It could be atmospheric pressure, it could be the cohesion between water molecules,or it could be a combination of the two. A siphon is a device […]

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#1779 How did fish and chips become a traditional British food?

How did fish and chips become a traditional British food? Fish and chips became a traditional British food thanks to fried fish brought from Spain and Portugal, chips brought from Belgium and France, railway networks, improved agriculture, urbanization, entrepreneurs, and wartime thinking. If you have traveled to Britain, you will undoubtedly have tried fish and

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#1774 Who invented algebra?

Who invented algebra? Algebra was invented by many people over many years, but Muhammad ibn Musa al-Khwarizmi is known as the “father of algebra” and it is from his seminal work that we get the word “algebra”. The word algorithm also comes from the Latin version of his name “Algorismus”. Algebra is a branch of

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#1773 How does a smartwatch measure pulse and blood oxygen levels?

How does a smartwatch measure pulse and blood oxygen levels? A smartwatch measures both pulse and blood oxygen levels by shining different colored lights through your skin and into your blood vessels. These days, smartwatches have more and more functions, and many of those functions are to do with health. Two things they can do

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