4 ms·
The speed of light is 1c and is a fundamental constant. Humans choose to express it in metres and seconds. A meter is huge if you compare it to the Planck len
by wisty 2y ago
The speed of light is 1c and is a fundamental constant.
Humans choose to express it in metres and seconds.
A meter is huge if you compare it to the Planck length. Humans are pretty big creatures compared to fundamental particles, so we have a big basic unit of length. But seconds are gargantuan, because humans are absolutely glacial if you compare them to the time it takes light to travel a Planck length.
It's like a continental plate asking why humans zip around so fast.
- belter 2y ago> The speed of light is 1c and is a fundamental constant. Yes, but why is the value that it is and not higher or lower? From my (basic) research it seems, it could be plus or minus 20% a different value, and the current Universe would still be feasible.
- marcellus23 2y agoWell, it has to be _some_ value, right? I mean, if we were in a universe where it was 20% greater, you would be asking the same questions.
- belter 2y agoNo, the point is that if it was 20% bigger we would not be here to ask those questions :-) Stars fusion or weak atomic interactions would not work. Maybe Hari Seldon decided....
- marcellus23 2y agoBut you said in your comment that "it could be plus or minus 20% a different value, and the current Universe would still be feasible"