When was corrugated cardboard first used? Corrugated cardboard was first used as a liner for top hats. Corrugated cardboard is commonly used for making cardboard boxes and if you have ever ordered anything from Amazon, you will have handled some. It consists of a corrugated sheet sandwiched between two linerboards. The corrugated layer gives it […]
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What is the tallest a mountain can be? It depends on the strength of the surface gravity, the amount of volcanic activity, the movement of tectonic plates, and the weather. The highest mountain on Earth is Mount Everest at 8,848 meters high. Technically Mauna Kea in Hawaii is the tallest mountain if you measure from
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By Pablo Picasso – wordpress, PD-US, https://en.wikipedia.org/w/index.php?curid=38782663 What is cubism? Cubism is an art form where the artist tries to show an object from multiple viewpoints at the same time. Pablo Picasso is credited with inventing cubism in about 1907, but he wasn’t the only artist experimenting with shapes, he was only the most well-known
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Why do we get a headache when we are dehydrated? You get a headache when you are dehydrated because your brain shrinks and pulls away from the sides of your skull. The human body is about 60% to 70% water. Some parts of the body contain more water than other parts. The blood and the
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When did people first start using locks and keys? Keys and locks were first used about 6,000 years ago. The earliest lock that has been found so far was 6,000 years old and was found in the ruins of Nineveh, the capital of ancient Assyria. The fact that a fully formed lock was discovered means
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Can you cure male-pattern baldness? In male-pattern baldness, the hair follicles are still present on the scalp, they are simply dormant. What is male-pattern baldness? It is hair loss that most commonly happens to males and usually follows a specific pattern. It begins at the temples and at the top of the head. The hair
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How long does a 747’s runway need to be? A Boeing 747 airplane needs a runway that is at least 2,300 m long to land and over 3000 m to take off. However, this is a difficult question because there are many variables that come into play when determining the necessary length of runway for
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How does caffeine stop you from feeling sleepy? Caffeine stops you from feeling sleepy by blocking the action of adenosine on its receptors. So, why do we get sleepy? A lot of research has been done into why we need to sleep, but nobody has come up with an answer. We obviously do because if
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Why are rabbit ears so long? A rabbit has big ears to cool itself down, not just to hear predators. Rabbits are herbivores and are obviously preyed upon by various other animals. Their large ears can swivel independently and can pick up sounds from up to 3km away. They can turn each ear 270 degrees,
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Why does drinking milk help after eating spicy food? Milk helps after eating spicy food such as chili because it contains something called casein. When you eat spicy food, the oily capsaicin molecules attach themselves to nerve receptors in your mouth. These receptors then release a protein called TRPV1, which alerts your brain to heat.
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