Is category 5 the strongest a hurricane can be? A category 6 hurricane is possible, but not with the current method of measuring hurricanes. The hurricane category system is called the Saffir-Simpson Hurricane Scale. As the name suggests, it was invented by two people called Saffir and Simpson. Herbert Saffir was a civil engineer and […]
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Why do we use A4 as a paper size? We use A4 because it is a ratio of A0, which is 1 square meter of paper. The A system of paper was invented in Germany and adopted by almost all of the countries in the world in 1975. The only countries that don’t use it
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Does the Vatican have a secret library? No. The Vatican doesn’t have a secret library. There are some sections that are restricted, and there are some recent records that are off limits, but no more than many other government libraries and there are certainly some governments that are much more secretive. The Vatican library is
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How much weight could a human lift? This is a difficult question to answer because there are too many variables, but possibly three or four tons. There are many ways of lifting weight and there are different records for each method. The heaviest weight ever lifted by a human is purported to be 2,844 kg,
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Why are the majority of people right handed? No one knows for definite, but it could be because we process language with the left side of our brain. It is generally thought that 85 to 90% of people are right-handed. The majority of the rest are left-handed, with a very few individuals being ambidextrous. A
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Why do they add a smell to gas? Gas companies add an additive called mercaptan to natural gas so that people can smell it in the event of a gas leak. The natural gas we use to cook with or to heat our houses and our water doesn’t smell of anything. Natural gas contains many
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How does a two-way mirror work? There is a screen on one side of the mirror that reflects most of the light but allows some of it to pass through. Two-way mirrors were invented in 1903. We often see them used in police movies, where the detectives are watching a criminal on the other side
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Why does the corpse plant smell so bad? They produce the scent of rotting meat to attract insects that feed and lay their eggs on decaying animals as pollinators. “Corpse plant” is just a nickname. The flower’s real name is Amorphophallus titanium, which is made up of the three Greek words “amorphos” (misshapen), “phallos” (phallic),
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How big could a plane or helicopter be? Theoretically, there is no limit so long as there is a strong enough material and enough thrust can be produced. Practically, there are no materials strong enough to make planes or helicopters much larger than they already are. The largest helicopter in the world at the moment
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What is the difference between volts, amps, ohms, and watts? Volts measure the difference in electrical force between two points. Amps measure the flow of electricity. Ohms measure the resistance of the material. Watts measure electrical power. The volt is named after Alessandro Volta, who built the first electric battery. Volta lived from 1745 to
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