Wavelength times frequency

[bonjour]

equals speed?

I only ask as I couldn't find a solid answer online.

 

[Doc Al]

Yes, that's the basic wave relationship: Speed = Wavelength * Frequency

See: http://hyperphysics.phy-astr.gsu.edu/HBASE/wavrel.html#c1"

 

[bonjour]

Isn't calling C the speed of light in e=mc2 misleading as light is a specific part of the electromagnetic radiation spectrum.

Shouldn't C be the speed ot the electromagnetic radiation spectrum

 

[Doc Al]

Since all forms of electromagnetic radiation have the same speed in a vacuum, calling 'c' the speed of light is OK. Often all wavelengths, not just the visible, are referred to as 'light'.

 

[bonjour]

Right so then there would also be no objection to calling C the speed of gamma, or speed of infrared?

 

[Doc Al]

Right so then there would also be no objection to calling C the speed of gamma, or speed of infrared?

Sure. No problem. All the same. Just calling it the 'speed of light' is more generic, though.

 

[bonjour]

http://www.chacha.com/question/how-does-the-speed-of-visible-light-compare-with-the-speed-of-gamma-rays-when-both-speeds-are-measured-in-a-vacum

Is this true?

 

[Doc Al]

http://www.chacha.com/question/how-does-the-speed-of-visible-light-compare-with-the-speed-of-gamma-rays-when-both-speeds-are-measured-in-a-vacum

Is this true?

Nope.