About visible light spectrum

  • Thread starter hkunkun
  • Start date
  • #1
2
0
I got this thing from wikipedia: http://img72.imageshack.us/img72/9878/vlszo.jpg [Broken]
605px-Linear_visible_spectrum.svg.png

Link to wikipedia: Visible spectrum

So:
- Is it the right scan of visible spectrum? Because when I search, there are a lots of other version, which is not really like each other. (Google Link)
- What is the number of Wavelength of the TRUE red/orange/yellow/green/cyan/blue/violet? And the red/blue/green 's wavelength using in TV?

Thanks a lots! And sorry for my bad English.
 
Last edited by a moderator:

Answers and Replies

  • #2
785
15
<Wikipedia Pic>

So:
- Is it the right scan of visible spectrum? Because when I search, there are a lots of other version, which is not really like each other. (Google Link)

The answer is yes... Moreover all images are same , just a very minor difference. Remember that in physics nothing is exact. Its just nearest approximation.

- What is the number of Wavelength of the TRUE red/orange/yellow/green/cyan/blue/violet? And the red/blue/green 's wavelength using in TV?
Huh ? Number of wavelength ? That's wrong. Wavelength of colours are given in your image only. There are only 7 real colours : VIBGYOR .
All others are sensations caused by combination of these real colours.

Thanks a lots! And sorry for my bad English.

No worries !
 
  • #3
2
0
Huh ? Number of wavelength ? That's wrong. Wavelength of colours are given in your image only. There are only 7 real colours : VIBGYOR .
All others are sensations caused by combination of these real colours.

Thanks for the good answer :)
I have a mistake, my really means is the wavelength that show the truest color of V/O/B/G/Y/O/R. Also the wavelength of R/B/G color using in TV.
Thanks again!
 
  • #5
38
0
Though it is typically considered that "red' boundary of visible spectrum is about 700-750 nm, a human eye can see a radiation with wavelength up to approx. 950 nm as red light, if the intensity is high enough. I observed 940-nm radiation of a laser diode which seem to me as dark-red. Concerning longer-wavelength radiation, an eye can see it in some cases due to non-linear processes at very high intensity level. I saw 1064-nm pulses which hit white- paper screen as green flashes at intensity of order of 10^9 W/cm^2. The green flashes were produced within my eye rather within the paper. It was established by use of green and IR light filters.
 

Related Threads on About visible light spectrum

  • Last Post
Replies
2
Views
802
Replies
2
Views
18K
Replies
9
Views
2K
Replies
28
Views
2K
Replies
5
Views
2K
  • Last Post
Replies
6
Views
770
  • Last Post
Replies
5
Views
4K
  • Last Post
Replies
9
Views
2K
  • Last Post
Replies
3
Views
723
  • Last Post
Replies
9
Views
3K
Top