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, […]
#465 How does LSD work? Read More »
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
#464 How does a hydrogen fuel cell work? Read More »
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,
#463 Why does hot air rise? Read More »
When were glasses invented? The first wearable glasses were invented in Italy in the 13th century, but the Romans were using spheres of glass for magnification thirteen hundred years earlier. There are two types of eye problem that require correction with glasses. These are myopia (near-sightedness) and hyperopia (far-sightedness). When you are myopic, the light from
#462 When were glasses invented? Read More »
Why is there a sunken continent underneath New Zealand? There is an almost completely submerged continent called Zealandia in the southern hemisphere. My questions is actually a little bit misleading. The sunken continent isn’t “underneath” New Zealand. New Zealand is part of this continent. Zealandia has an area of 4.9 million km2, which makes it
#461 Why is there a sunken continent underneath New Zealand? Read More »
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
#460 How is volcanic ash made and how dangerous is it? Read More »
Why do we say “born to the purple”? What is Tyrian purple? We say that someone who is born into a royal or powerful family is “born to the purple” because Tyrian purple was an incredibly expensive color that only wealthy and powerful people could afford. The dye for Tyrian purple was made from the
#459 Why do we say “born to the purple”? What is Tyrian purple? Read More »
What causes pins and needles? Pins and needles are caused because the flow of blood to your nerves is restored. Pins and needles are really called paresthesia. The word comes from the Greek para, which means “abnormal” and aesthesia, which means “sensation”. They come after one of your limbs has fallen asleep, which is actually
#458 What causes pins and needles? Read More »
Is an Olympic gold medal really made of gold? The gold medal the winners at the Olympics get is only 7.5% gold. It is 92.5% silver with only a gold-plating of about 6g. With 6g of gold in a medal, the value of the medal would be about $800 if sold for its precious metals.
#457 Is an Olympic gold medal really made of gold? Read More »
When did people start using glass for windows? The Romans were the first people to have glass in their windows, but it wasn’t a common practice to have glass windows until the 17th century. There have been window holes since there have been houses because it is necessary to let the light in during the day.
#456 When did people start using glass for windows? Read More »
