Thanks NascentOxygen,
Which kind of rule takes place that useful range with extend ? (thought Physics is not my field )
I do agree with you, the power that added to beam is not too much but
some people use this trick in a sender and receiver infrared to extend their range !
and I consider...
I wonder to know what would happen when we use two flashlight in a same direction. by doing so, do we extend the range of light?
if so, does it mean if the lights cross each other in a point perpendicularly the range that the light can traverse is going to reduce ?
I have been said that if we...