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What's the wavelenght of pure red

What's the pure wavelenght of red

  • 632nm

    Votes: 0 0.0%
  • 635nm

    Votes: 0 0.0%
  • 650nm

    Votes: 6 60.0%
  • 660nm

    Votes: 4 40.0%

  • Total voters
    10
  • Poll closed .
Joined
Jul 20, 2013
Messages
321
Points
18
Hi there! I just want to know which is the wavelenght you think is pure red... you can chose between 632nm, 635nm, 650nm and 660nm.:thanks:
 





Joined
Jul 20, 2013
Messages
321
Points
18
Why have these threads not died yet O.O

Because still are a few more colors! I just help on making this faster. And as I said in another post, after the visible colors will get end some of the LPF members will start making threads about something like: "What's the pure wavelenght of IR", or UV, I don't know...
 
Last edited:

IsaacT

0
Joined
Aug 25, 2010
Messages
5,947
Points
83
IT is none of those. Pure red is 685nm-690nm. Everything else looks red-orange in comparison. Also, I am tired of these threads as well.
 
Joined
Jul 20, 2013
Messages
321
Points
18
IT is none of those. Pure red is 685nm-690nm. Everything else looks red-orange in comparison. Also, I am tired of these threads as well.

I don't think so... maybe my seeing balls are broken or something... I still think 660nm or even 650nm doesn't have anything orange in it. 635nm does.
 
Last edited:

IsaacT

0
Joined
Aug 25, 2010
Messages
5,947
Points
83
Everything is comparative. If you haven't seen 685-690, you would of course consider 660 devoid of orange. Having seen them side by side I can never view it the same way however.
 
Joined
Jun 22, 2011
Messages
2,431
Points
83
I have seen 635nm, 650nm and 685nm. 635nm has a slight orange tint and 685nm looks very slightly crimson/blood red - i.e. not what I'd call pure red. I vote for 650nm.

Wish there were more options. And I do like these threads.
 




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