# What is the speed of light?

Problem Statement: I know that speed of light is 3000km per second
Relevant Equations: Is it true?

Can someone correct me if I 'm wrong,just interested thank-you

## Answers and Replies

Can someone correct me if I 'm wrong,just interested thank-you

Gaussian97
Homework Helper
Well, it's 299 792 458##\text{ms}^{-1}##, or, equivalently 299 792,458##\text{kms}^{-1}##.

haruspex
Homework Helper
Gold Member
Problem Statement: I know that speed of light is 3000km per second
Relevant Equations: Is it true?

Can someone correct me if I 'm wrong,just interested thank-you
You dropped a couple of zeroes. And this is the speed in a vacuum; it is slower in other media.

.Scott
Homework Helper
You are off by a factor of 100.
It is 299,792 Km/s