Why are carrots orange? Because they contain carotenoids, which are orange. Carotenoids are organic pigments that are produced by plants, algae, and some bacteria and fungi. They can be found in vegetables such as pumpkins, carrots, corn, and in animals such as canaries, lobsters, and flamingoes. In plants and algae, carotenoids absorb sunlight for photosynthesis. […]
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How does LSD work? Nobody actually knows how LSD affects the brain. LSD is the common name for Lysergic Acid Diethylamide. So, why is it LSD and not LAD? LSD comes from the German Lysergsäurediethylamid. It was synthesized on November 16, 1938 by Albert Hofmann, a Swiss chemist. He was searching for ergot alkaloid derivatives,
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How does a hydrogen fuel cell work? They split hydrogen atoms into protons and electrons to generate electricity. There are several different types of fuel cell. This is how a basic hydrogen fuel cell works. The hydrogen is pressurized and fed into the storage tank. When the power is required, pressurized hydrogen is fed into
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Why does hot air rise? Hot air rises because it is less dense than cold air. When something heats up it is having thermal energy applied to it in some form. If you hold your hand out on a sunny day, infrared radiation is supplying energy to the molecules in the skin of your hand,
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How is volcanic ash made and how dangerous is it? Volcanic ash is made of rock, mineral and glass particles that are smaller than 2 mm. It can be extremely dangerous. Volcanic ash is formed during a volcanic eruption. Magma inside the volcano contains dissolved gases and water. These gases are mostly sulfur dioxide and
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What is the densest material in the universe? Osmium is the densest material on Earth, but the densest material in the universe (that we know of) is that of a neutron star. What is density? Density is the amount of mass that something has in relation to the space that it occupies. For example, a
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What are contact lenses made of? Soft contact lenses are made of an oxygen permeable soft plastic. Hard lenses are made of a plastic like Perspex. There are generally two types of contact lenses: soft and hard. Soft lenses are made of a soft plastic. These days, the plastic used is silicone hydrogel. Silicone hydrogel
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What causes thunder? Thunder is caused because the air around a lightning bolt is superheated. Lightning is caused when there is an imbalance in the electrical charge within clouds. During a heavy storm, strong winds circulate through storm clouds. The wind picks up water droplets at the bottom and carries them to the top of
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How does wireless charging work? By sending power from a transmitter to a receiver. Wireless charging is known as inductive charging and it is very common these days. Many of us charge our phones by placing them on a magnetic wireless charging pad. But, how does wireless charging work? It uses something called inductive charging.
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What makes rain smell? A combination of plant oils, bacterial spores, and ozone. Everything always smells very fresh after a rainfall and there is a word for it. Merriam-Webster defines petrichor as, “a distinctive, earthy, usually pleasant odor that is associated with rainfall especially when following a warm, dry period”. The word was invented by
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