A question of power

[cul8r]

How many mw of power would a red laser diode pointer have to be to project a visable beam in an average indoor lit room?

 

[ndrew2505]

depends on the wavelength as 635 is more visible than 650-660nm...

 

[Deleted member 8382]

anyway, a lot, maybe 500mW?

 

[chipdouglas]

in a lit room!!!!! i have never seen it but my guess would be 1000mw or more

 

[cul8r]

Thank you for that answer it put into perspective a bunch of things for me. If you could out line a few more at your convenience How many mw would a red pointer have to be roughly to send a good visable beam in the dark, as in a dark night not much moon. And as for a green pointer to see a definite beam in a lit room or on a dark night given they were all of a wave length that was pretty common. Thanks again and it's much appreciated.