How are sellotape (Scotch tape), duct tape, stick glue, wood glue, and superglue different? All the types of glue have different chemical components and they are different in the way that they dry. They also stick or don’t stick to different things. Adhesive tape is called sellotape in the UK and Scotch tape in the […]
Is time travel possible? Time travel into the future is possible but time travel into the past is most likely not. It is difficult to say if something is possible or not because we can only judge the likelihood of it being possible with our current knowledge and technology. There is no way of knowing
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What happens if you get struck by lightning? If you do get struck by lightning, which is more common than you might imagine, it can cause severe burns, damage to the nervous system, cardiac arrest, a lot of other damage, and death. It is estimated that 240,000 people a year are struck by lightning, and
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Are cryonics possible? Cryonics might be possible in the future, but there is no way at the moment to imagine how it would be possible. The basic idea behind cryonics is that someone who is sick and cannot be healed by modern medicine is frozen when they die so that they can be revived at
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How many types of plastic are there? There are many different types of plastic, but they have been grouped into 7 different types of plastic. They are PET, HDPE, PVC, LDPE, PP, PS, and other. You can tell which ones they are because of their Resin Identification Code, which has a triangle made of arrows
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Why do we laugh? Nobody knows for definite, but there are several theories. One of the theories is that we laugh as an evolved response to the passing of stress to show the rest of our herd that the danger has passed. One of the most interesting things about laughter is that it is not
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How is a pope elected? A pope is elected by the College of Cardinals and they need to get two-thirds of the vote to be elected. There have been approximately 266 popes so far. I say approximately because at some points there were two popes at the same time as different parts of the church
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How do trombones work? Trombones and all brass instruments use different methods, but they all make a variety of sounds by altering the length of the tube the air travels through. All wind instruments generally work on the same principle, although they have some major differences. The general idea is that you blow into one
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What is Prince Rupert’s drop? Prince Rupert’s drop is a small, tadpole-shaped glass bead that is incredibly strong but incredibly fragile. Prince Rupert’s drops have been around for a long time and there is some thought that they were first discovered by Roman glassmakers two thousand years ago. They were first brought to Great Britain
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Why is the presidential inauguration on January 20th? Inauguration day is on January 20th because the 20th Amendment to the Constitution changed it in 1933. The new president of the United States of America is sworn in on January 20th. There is a big spectacle, which is attended by thousands of people. The president swears
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