I learned this today. A battery works because the chemical reaction within it produces electrons. There are different kinds of batteries that use different chemicals, but the general principle is the same. A battery is an energy storing unit. The energy is stored in the form of chemical energy. A chemical reaction happens that causes […]
#159 How does a battery work Read More »
I learned this today. Dinosaurs were able to grow so big because they had hollow bones, could get more nutrition out of less food, and they didn’t need to chew their food. The largest land animal today is the African elephant and they grow up to about 3m and weigh about 6 tons. The largest
#158 How could dinosaurs grow so big? Read More »
I learned this today. Superglue works because a chemical reaction occurs that makes it harden. Superglue is made from ethyl cyanoacrylate, which is an acrylic resin. Cyanoacrylate hardens when it comes into contact with water. Cyanoacrylate is an acrylic monomer. A monomer is a molecule that can react together with other monomer molecules to form
#156 How does superglue work? Read More »
I learned this today. What is liquefied natural gas? Liquified natural gas is gas that has been cooled down until it becomes a liquid. There are four states of matter: solid, liquid, gas, and plasma. Matter changes from one state to the other depending on how much energy the particles within it have. As more
#154 What is liquefied natural gas? Read More »
I learned this today. What is the difference between Celsius, Centigrade, Fahrenheit, and Kelvin? Fahrenheit was invented first. Celsius came next. Celsius and centigrade are the same thing. Kelvin came last. The Fahrenheit scale was invented in 1724 by the physicist Daniel Gabriel Fahrenheit. He was German by birth, but spent nearly all of his
#152 What is the difference between Celsius, Centigrade, Fahrenheit, and Kelvin? Read More »
I learned this today. A tokamak is a device that uses a strong magnetic field to keep a gas plasma in a donut shape in order to achieve nuclear fusion. Tokamaks were invented in Russia in the 1960s and the word comes from Russian. It means “toroidal chamber with magnetic coils”, which is тороидальная камера с магнитными катушками
#148 What is a tokamak? Read More »
I learned this today. Gas masks work by blocking bacteria and viruses, or by absorbing or altering chemicals. Gas masks have to be effective against bacterial, viral, and chemical agents. Bacteria and viruses are technically the easiest because all the gas mask has to do is block them. This is done with a filter. The
#146 How do gas masks work? Read More »
I learned this today. Erasers work because of friction. They become sticky when they are hot and hold onto the graphite particles. Before we look at how erasers work, I think we need to look at how pencils are able to write on paper. Pencils are made with graphite. These days the graphite is mixed
#140 How does an eraser work? Read More »
I learned this today. There are different types of stem cells, but they basically work by developing into different types of cells. There are 200 different types of cells in the body, and they all do different tasks. For example, neurons in the brain, white blood cells that fight infection, muscle cells, and the
#137 What are stem cells and how do they work? Read More »
I learned this today. Diazepam is a benzodiazepine drug that works by increasing the amount of a chemical called GABA in the brain to inhibit electrical impulses. GABA is Gamma-aminobutyric acid. It is a chemical that your brain produces. It is an amino acid and is an inhibitory neurotransmitter in the brain. It inhibits brain
#134 How does Valium (diazepam) work on the brain? Read More »
