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how far ? ? ?

rikgrimsby

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how far can a laser beam go ? dose it depend on the wm of the laser of could a green been seen better then a red, blue ect..........
 



lasersbee

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how far can a laser beam go ? dose it depend on the wm of the laser of could a green been seen better then a red, blue ect..........

What kind of a Dose is that... and what is a wm....:thinking:

wtf.gif
I can't make heads or tails of....."dose it depend on
the wm of the laser of could a green been seen better then a red
"...

Is that even English......:thinking:
Man.... you need to get off the Drugs or Booze...:cryyy:


Jerry
 
Last edited:

DTR

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Drugs aside I think he was asking how far will the light from a laser go. Well if you were in space it would go indefinitely until it is absorbed by matter however it will be spread out by the divergence of the laser. On Earth it would depend on several factors. Moisture, smog, air pressure, divergence, power output which is rated in mW's, etc.
 

qumefox

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Drugs are bad, mmmkay.

Red though, is less subject to atmospheric loss.
 

CrazyMonkey

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Well, since the universe is expanding it is hard to say, but at least as far as is the edge you point it in. You'd think maybe just 1 photon may make it ;p
I am sure I have some laser photons at least 10 light years away.

I am guessing you mean how far can it go, and see the beam with the unaided eye(s)?
Or the beam terminating? Depends on power and divergence mostly, then other
factors I can't calculate :)
 

rikgrimsby

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ok let me word it another way
could a person see a 200mw laser beam from 2miles away or futher ?
 

DJNY

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This one should help you (not mine)

 

DJNY

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Would be great if you can buy the 200mW version here at JETLASERS and review it! :)
 




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