#138 Did pirates really use the Jolly Roger flag?
I learned this today. The Jolly Roger was the flag used by pirates, but nobody really knows why it was called the Jolly Roger and there were many different versions…
I learned this today. The Jolly Roger was the flag used by pirates, but nobody really knows why it was called the Jolly Roger and there were many different versions…
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…
I learned this today. A letter of marque was a license from a government for a private citizen to attack and capture vessels of an enemy nation in order to…
I learned this today. Bluetooth is a short range, low power technology that can transmit data over radio waves. Bluetooth works on frequencies in the 2.400 to 2.483.5 GHz short-range…
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…
I learned this today. Corals are animals because they don’t produce their own food. Corals are sometimes thought to be rocks and sometimes thought to be plants, but they are…
I learned this today. The first account of a crime syndicate that was an American Mafia was published in the New Orleans Times in 1869. It could be argued that…
I learned this today. A machine gun works by using the recoil or the gas of the cartridge explosion to reload and re-cock the gun after each shot. There are…
I learned this today. We have 24 hours in a day because of Hipparchus. We have 60 seconds in a minute and 60 minutes in an hour because of Claudius…
I learned this today. There is no reason why the speed of light is 299,792,458 m/s. It just is. The speed of light is the top speed that matter or…