## Speed of light [ENDORSED]

$c=\lambda v$

Caitlin Dillon 3G
Posts: 26
Joined: Wed Sep 21, 2016 2:56 pm

### Speed of light

I know this may be a stupid question, but I am really behind in chemistry...Is the speed of light always 3.00 x 10^8 meters per second? Or just in a vacuum?

Joshua Baysa 1J
Posts: 10
Joined: Wed Sep 21, 2016 2:59 pm

### Re: Speed of light

The speed of light is 3.00 *10^8 only within a vacuum. This speed changes in things like air and water, but I'm not sure how much of a change this brings out.

Logan 3C
Posts: 22
Joined: Wed Sep 21, 2016 2:57 pm

### Re: Speed of light

The speed of light slows down through materials such as gas, water and glass because of both its wave and particle principles.

Mirian_Garcia_2G
Posts: 51
Joined: Wed Sep 21, 2016 3:00 pm

### Re: Speed of light  [ENDORSED]

I believe that the most important thing to remember is that c, the speed of light, is a constant value. Whenever c is used in a formula, always know that its value is 3.00x10^8 m/s. But, yes, 3.00x10^8 m/s is the speed of light in a vacuum.