What is the symbol for second?
Q: What is the symbol for second?
A: The symbol for second is "s".
Q: How many seconds are in a minute?
A: There are 60 seconds in a minute.
Q: How many minutes are in an hour?
A: There are 60 minutes in an hour.
Q: How many hours are in a day?
A: There are 24 hours in a day.
Q: Where does this tradition of measuring time come from?
A: This tradition dates back to the Babylonian.
Q: How do scientists measure the second?
A: Scientists measure the second by how long it takes for a caesium atom to vibrate 9,192,631,770 (around 9 billion) times.
Q: What is one example of why scientists use this method of measuring time instead of other methods?
A: Scientists use this method because the length of a day changes all the time and vibrations of atoms on the other hand always take the same time.
