Tag: One second

Scientists have measured the time it takes for a photon to pass through a hydrogen molecule. One second is 50 billion billion times longer.

One second is already very short for us, but for some things, one second is also very long. A bee can flap its wings hundreds of times in a second, and a bullet can be in a second. Flying more than 100 meters, a cannonball can fly more than 1,000 meters, and light can fly 300,000 kilometers. For Planck time, one second is really too big, because it contains 10 to the 43th power. Runck time is much more than the sum of the number of seconds produced in the 13.8 billion years since the birth of the universe.

2020-10-20