physics wavelength

aviles · #1 Apr 30, 2009, 07:23 PM

what is the frequency of an electromagnetic wave if it has a wavelength of 1km (1000m)?

Perito · May 1, 2009, 04:38 AM

The relationship between the wavelength of light, λ, and the frequency, ν, is

$c = \lambda \nu$

where c is the speed of light

$c \approx 3 \times 10^8\,\frac {meters}{sec}$

$c = 299 792 458 \,\frac {meters}{sec}$

Make sure you use the proper units.

Unknown008 · May 2, 2009, 09:13 AM

I prefer using the 'traditional' formula $v=f\lambda$ , keeping in mind that electromagnetic waves have the speed of light.

Unknown008 · May 2, 2009, 10:00 AM

Oh, I see! Thanks Cap!

Unknown008 · May 2, 2009, 11:56 AM

Quote:

Perito agrees: You say "f", I say "nu" ... "traditional?" I thought Nu Lambda was traditional!

Okay, I don't know, but that's how I was taught at school, everything concerning those types of numbers through v=f 'lambda'



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