## Speed of light wavelength equation [ENDORSED]

$c=\lambda v$

Lauryn Jordan 1F
Posts: 76
Joined: Fri Sep 29, 2017 7:07 am

### Speed of light wavelength equation

When do you use the c = wavelength x frequency?

Matthew 1C
Posts: 47
Joined: Fri Sep 29, 2017 7:06 am

### Re: Speed of light wavelength equation  [ENDORSED]

since the value of c is constant, being the speed of light, you can use the equation to solve for either wavelength of frequency, depending on what the given values are

Ayona Sengupta
Posts: 16
Joined: Fri Sep 29, 2017 7:07 am

### Re: Speed of light wavelength equation

Sometimes you might also need to rearrange and plug this formula into a larger question/different formula. For example, you might rewrite E=hv to E=hc/lambda.

Posts: 30
Joined: Fri Apr 06, 2018 11:03 am

### Re: Speed of light wavelength equation

Most commonly I think we have been using the equation in the form wavelength= c (3.0 x 10^8)/ frequency to solve for the wavelength. I feel like that is the most common form of the equation that we have seen.

Nancy Nguyen 1K
Posts: 30
Joined: Fri Apr 06, 2018 11:04 am

### Re: Speed of light wavelength equation

Since the value of c is a constant should we memorize it for exams or will the its value be provided during?