The New Intimacy

Red light laser pointer verses green light laser pointer. Have you seen them? Which do you like better?

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Contributor: Bignuf Bignuf
I just got a green light laser pointer for lectures. You can actually see the beam (like a Star Wars light saber), unlike the invisible beam of the red laser.

However, I have learned a green light laser is far more damaging to the retina's then any red laser, due to absorption in the tissue, so care must be used to never look into the beam or shine it at anyone (including pets).

Even the legal, low power (under 5mW) is simply more dangerous in green. However, green IS way more visible on a board and "directs the eye" more then red, I think.

Anyone want to chime in on this?
12/18/2012
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Contributor: deltalima deltalima
Quote:
Originally posted by Bignuf
I just got a green light laser pointer for lectures. You can actually see the beam (like a Star Wars light saber), unlike the invisible beam of the red laser.

However, I have learned a green light laser is far more damaging to the retina's ... more
I prefer using a red or blue laser because my students have said that when moving around or those at an angle, it doesn't blind them like a green laser does.
12/18/2012
Contributor: Mwar Mwar
Our eyes perceive a green laser as brighter due to the anatomy of our eye and wavelength of the color green. That's why we see the green more and we're more susceptible. One should not look into lasers anyways though. At all.
12/18/2012
Contributor: MrWill MrWill
I prefer blue. :-D


Check out the Spyder 3 Arctic Blue sometime. I wouldn't use it for lectures though, as it could potentially catch things on fire!
12/18/2012
Contributor: Kat and Aaron(aaron) Kat and Aaron(aaron)
My wife uses a green laser for her astronomy presentations and planetarium work. She uses a red filtered light to illuminate her notes because it is less distracting.
12/19/2012