## Color of visible light

$c=\lambda v$

Charlotte Shieh 1F
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### Color of visible light

If an atomic spectra lies within the visible light spectrum (Balmer series), would we be expected to know what color light it is?

Vivian Nguyen
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### Re: Color of visible light

Charlotte, I don't think you would need to know what color it is... I haven't run into any practice problems that asked for what color the wavelength is. But I'm sure it's nice to be familiar with some common wavelengths such as the range for visible light, range for UV light, etc

Janet Nguyen 2H
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### Re: Color of visible light

I have seen a homework question that asked for the color of the visible light. However, I don't think that Professor Lavelle would expect us to know it aside from that violets and blues have the shorter wavelengths and reds and oranges the longer. In fact, the spectrum is much like a rainbow in the order of the colors.

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### Re: Color of visible light

I would just remember that visible light is between 400 nm (violet) and 700 nm (red)

204918982
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### Re: Color of visible light

I think the only ones we are expected to remember for now are red(700 nm) and violet(400 nm) and maybe blue(470nm)

Hyein Cha 2I
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### Re: Color of visible light

Charlotte Shieh 1F wrote:If an atomic spectra lies within the visible light spectrum (Balmer series), would we be expected to know what color light it is?

Just know that red is 700nm and violet is 400nm

Nehal Banik
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### Re: Color of visible light

All you need to know is that visible light is from the spectrum 400-700nm, you won't have to memorize which wavelength relates to which color in the visible spectrum.

Angel Ni 2K
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### Re: Color of visible light

No, it is not necessary.

Kaelie Blanes-Ronda 2L
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### Re: Color of visible light

No, all you have to know is that violet is about 400 nm and red is 700 nm. From this you can infer from ROY G BIV that Green would be about 550 nm since it's in the middle.

Michael Lee 2I
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### Re: Color of visible light

No the most we would need to know is 400 nm being violet light and 700 nm is red light. Everything in between would either be given or it would not be asked for.

DAllaf
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Joined: Fri Sep 29, 2017 7:04 am

### Re: Color of visible light

Hi Charolette,

I would say that it probably not expected of us to memorize the exact wavelength for each color, but it would be good to know that visible light region ranges from 400 nm (violet) to 700 nm (red). It may also be a good idea to have a general idea about the order of the light spectrum (gamma ray, x ray, ultra violet, visible, infrared,... etc.)

Hope this helps

Jesus Rodriguez 1J
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Joined: Sat Jul 22, 2017 3:00 am

### Re: Color of visible light

No we would not be expected to know the specific color. You would however be expected to know the range of the spectrum of colors (red-700nm and 400nm)