3 ms·

> I wish it had been defined Wish what had been defined? the second?

• ryanmcdonough 3y ago
  > and derive the length of the meter from that. I would assume they meant meter since they wrote that.
• irrational 3y ago
  The meter. The distance light travels in a second in a vacuum is fixed. Divide that distance by 300,000,000. That is the length of 1 meter.
  • reaperman 3y ago
    So the current definition is: > The meter (m) is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299,792,458 when expressed in the unit m s−1, where the second is defined in terms of ∆νCs.[0] Your proposed change is keeping this the exact same but changing 299,792,458 to 300,000,000? You said: “I wish it had been defined in relation to the speed of light in a vacuum.” I believe it is already, as written above. 0: https://www.nist.gov/pml/owm/si-units-length#:~:text=The%20meter%20(m)%20is%20defined,terms%20of%20∆νCs https://www.nist.gov/pml/owm/si-units-length#:~:text=The%20m....
    • tialaramex 3y ago
      If you prefer for some universal constants to be round numbers you can choose a Natural Units systems according to your preference. For example in some of these systems c = 1, which turns Einstein's famous equation into just E = m. Convenient.