Why do things go stale? Things go stale because they either lose water or they gain water, making them difficult to eat. If you leave food out on your kitchen counter, it very quickly starts to go stale. Foods that are soft tend to get hard, and foods that are hard tend to get soft. […]
#1450 Why do things go stale? Read More »
What is Peto’s Paradox? Peto’s Paradox is an observation that the occurrence of cancer in an organism doesn’t increase in line with the number of cells that organism has. Because cancer is caused by mutations in cells, it would be logical that the more cells an organism has, the more occurrences of cancer it will
#1449 What is Peto’s Paradox? Read More »
How does a hair transplant work? The basic idea is to take hair from the part of your head that still has it (usually the back) and transplant it to the part of your head that no longer has hair (usually the front or the top). Baldness is fairly common, and it is estimated that
#1448 How does a hair transplant work? Read More »
When did knights stop wearing armor? Knights stopped wearing armor when muskets began to be used more widely in battles. There are many types of armor, and it has evolved over the centuries. We are all familiar with the iron and then steel armor that knights often wear in movies. We have also probably seen
#1447 When did knights stop wearing armor? Read More »
Why can’t I walk through a wall? We can’t pass through a wall because of the Pauli Exclusion Principle and because of electromagnetic repulsion. If you think about it on the microscopic level, there is a huge amount of space between the atoms in anything. They are like planets in the solar system. So, if
#1446 Why can’t I walk through a wall? Read More »
How are undersea Internet cables laid? Undersea Internet cables are basically laid by spooling them off a very large ship. When you use the Internet, your computer has to somehow connect to the server where all of the information for whatever site you are searching for is stored. Those servers are in many different countries,
#1445 How are undersea Internet cables laid? Read More »
Why don’t giraffes faint? Giraffes don’t faint because they have a very strong heart and a very high blood pressure. If we bend over and then stand up again, we get a head rush. Sometimes it can be so bad that you faint. This is called orthostatic hypotension. Your blood pressure is set at the
#1444 Why don’t giraffes faint? Read More »
How does a hologram work? There are two types of holograms: the version that has a 3D image on a flat sticker, or plate, and the 3D kind that appears in the air out of nowhere. Surface holograms work by splitting light, and 3D ones work through several methods. A flat hologram is an attempt
#1442 How does a hologram work? Read More »
How do oxygen masks on a plane work? Oxygen masks on a plane work by initiating a chemical reaction that produces a relatively small supply of oxygen. Hopefully, you will never have to experience the oxygen masks dropping down while you are on a plane. Flying on a plane is still statistically the safest way
#1441 How do oxygen masks on a plane work? Read More »
Why does a paper cut hurt so much? Paper cuts hurt so much because of the roughness of the paper, the places we are most likely to cut, and the size of the cut. The first reason that paper cuts hurt so much is because of the paper itself. Paper is made from a dried
#1440 Why does a paper cut hurt so much? Read More »
