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Speed of light

Posted: Wed Oct 16, 2019 11:29 pm
by lasarro
Why do we use the speed of light to calculate the wavelength and frequency of electromagnetic waves, like radiowaves?

Re: Speed of light

Posted: Thu Oct 17, 2019 12:21 am
by nicolely2F
EM waves typically travel at the speed 3x10^-8 m/s. Because light is a type of EM wave (and light waves are used in many scenarios), we call it the speed of light.

Re: Speed of light

Posted: Thu Oct 17, 2019 12:26 am
by alexfwang3g
All EMR moves at the speed of light. Since the calculations utilized is regarding to a type of light, then naturally we should use 3x10^-8 m/s as well.

Re: Speed of light

Posted: Thu Oct 17, 2019 11:14 am
by Audrie Chan-3B
The units from wavelength (m) and frequency (s) give velocity (m/s). The speed of light is essentially the velocity for these two factors because we are dealing with light waves.

Re: Speed of light

Posted: Thu Oct 17, 2019 2:23 pm
by Megan Ngai- 3B
Electromagnetic radiation moves at the speed of light

Because the calc is about a type of light, c= 3x10^-8 m/s is used.

Re: Speed of light

Posted: Thu Oct 17, 2019 6:58 pm
by Anthony Hatashita 4H
Any EMR has the same speed, we just call it the speed of light (c)

Re: Speed of light

Posted: Sun Oct 20, 2019 11:48 pm
by stephaniekim2K
Typically, if not mentioned, you use the speed of light in a vacuum.

Re: Speed of light

Posted: Mon Oct 21, 2019 4:38 pm
by emwoodc
EMR is the speed of light so we typically use it

Re: Speed of light

Posted: Tue Oct 22, 2019 11:18 am
by DMuth_1J
The speed of light is a constant. No matter what kind of light or what variant of light, the wavelength multiplied by the frequency of a specific light sample being studied will always equal this constant 2.98x10^8 m/s

Re: Speed of light

Posted: Tue Oct 22, 2019 6:17 pm
by Chantel_2I
The speed of light can be used in regard to all types of electromagnetic radiation.

Re: Speed of light

Posted: Fri Oct 25, 2019 4:56 pm
by chrischyu4a
All electromagnetic radiation is light itself which is why they all travel at 3*10^8 m/s. The factors that distinguishes the types of EM waves are frequency and wavelength.

Re: Speed of light

Posted: Sun Oct 27, 2019 11:27 pm
by Kevin Liu 1J
speed of light is 2.998 x 10^8 m/s and this is utilized as waves are part of the light spectrum. Hope this helps!

Re: Speed of light

Posted: Sat Nov 02, 2019 1:30 am
by HuyHa_2H
Electromagnetic radiation move at the same speed as the speed of light hence we use the constant 2.998 x 10^8 m/s for both subjects.

Re: Speed of light

Posted: Sat Nov 02, 2019 1:47 am
by RobertXu_2J
Electromagnetic radiation travels at the speed of light, therefore we use the speed of light to calculate it. Light is a form of electromagnetic radiation, and the speed of light is really the speed of all these EM waves.