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engfant · 06-22-2005, 11:19 AM

Now is that 633nm ONLY EFFECTIVE at EXACTLY 633nm or is there an "effective range". If I bought a laser pointer that operates at 645nm is this the same thing?

06-22-2005, 11:19 AM	#43 (permalink)
engfant FREE ENGFANTUCATION Join Date: May 20 2003 Posts: 8,931 Rep Power: 12	Now is that 633nm ONLY EFFECTIVE at EXACTLY 633nm or is there an "effective range". If I bought a laser pointer that operates at 645nm is this the same thing?