Why was the Manhattan Project called the Manhattan Project? It was named after the city where its headquarters were originally located. The concept for the Manhattan Project began when Otto Hahn and Fritz Strassmann worked out how to make nuclear fission happen in 1938. Fermi had managed to make it happen in 1934, but he […]
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What animals and insects are pollinators? A large variety of animals and insects are pollinators. Many of us might think that flowers are only really pollinated by bees and butterflies when, in actual fact, there are a huge number of insects, reptiles, and mammals that are responsible for pollination. What is pollination? A plant has
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How does ceramic armor work? It shatters the projectile, absorbing and spreading out the kinetic energy from the projectile over a wider area. The first thing to clear up is that ceramic armor plates are made of a different type of ceramics than the mugs and cups in your kitchen. There are many different types
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Why do tattoos stay in the skin forever? Because the particles of ink are too big for the body to absorb and expel. When you have a tattoo, the tattooist uses a needle to put ink particles into your skin. Skin has three layers, and the ink is injected into the middle layer, the dermis.
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How does insulation in the home work? By slowing down the movement of heat energy out of the house or into the house. The idea of insulation is to stop your house getting cold in the winter or hot in the summer. If you live somewhere that is cold in winter, you have to use
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Who invented the slide rule? Willian Oughtred in 1622. I think, first, I need to look at what a slide rule is because not many people under 60 will have ever used one. These days, if we want to do complex calculations, we can just plug them in to our phone and get the answer
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What is the Fermi paradox? It is the fact that if life in the universe is so common, we should have found signs of it. Enrico Fermi was an Italian physicist. He received a Nobel Prize for physics in 1938 and he was involved with the Manhattan Project in the Second World War. He died
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Why did the USSR collapse? There are a myriad of reasons. Not one of them is exclusive and it could be said that were only one of these to have happened, the USSR could have continued to this day. Let’s look at 6 of them: war in Afghanistan, the price of oil, the Chernobyl nuclear
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What are moles, freckles, and birthmarks? Moles are caused when pigment-producing cells grow in a group. Freckles are caused when your skin cells produce too much melanin. Birthmarks are caused when blood vessels don’t form correctly or when the cells that produce pigment grow too much. Almost everybody has moles. By moles, I obviously don’t
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Why did some dinosaurs have such long necks? To reach the higher up vegetation, to get more low-lying vegetation, to expend less energy, and to lose heat. There are several different types of dinosaurs that evolved long necks. The most famous that we probably all know is the diplodocus. The diplodocus was undoubtedly large. It
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