killgore wrote:Alot of Things in This real world are transparent "Like Glass" and yet AREN"T. Plex-Glass, Acrylics, Quart, Diamond, Aerogels, Polycarbonate, and... for you Trekkies out there, Transparent Aluminum... All do (or would do if T.A. wer real) react differantly to light and the EMS!!!
And all of them take damage from lasers actually capable of doing any damage. I've seen,
IN THE REAL WORLD, laser cutters go thru plexi-glass and acrylics.
Correct and incorrect at the same time.
Lasers capable of do ing damage are generally using the Invisible light spectrum to do their damages because This/those colors of light generaly have an adverse reaction to many/most forms of matter. However, a visable light laser tunned to the right frequency could be just as effective.
Since most of the Visable light spectrum is reflected of a huge chunk of the matter that exists in the world (with notable exeptions of transparent & black materials), it is Ideal for using in the comprehension of things/objects by organic life forms (IE your human Eyes). Visable light is generally very useful therefor.
But the same can Not be said for an equal amount space taken up in another portion of the spectrum (lets say UV-Light fer instance) which operates at "7.5 x 1014Hz to 3 x 1017Hz", while visable operates in a VERY narrow margin of "380 to 750 nm", but because UV interacts with many types of matter so badly, it is Not good for vision.
Chickens use UV light to see, but in responce to this they forgo seeing many colors of visable light and thus see the world in a Very Monochomatic way, thus missing out on seeing what we see.
This all means that a single type of damaging laser (as you put it) may effect one type of acrylic one way, but an acrylic with a differing chemical compossition will be affected another way...
OR...In oother words
A laser that may Cut through one type of acrylic (has a hard time getting through it and thus aggitates it to the point of melting) may find that it has an Easier time getting through an acrylic that is made differantly, even though they may, on cursory examination, appear to be equally transparent.
What makes a damaging laser most noticable is generally its High wattage, But the Right frequency can be very weak in comparison and Still cut something because it is just the right color of light to affect a paticular type of matter.
OR... One type of matter (say Gold, Iron, Polycarbonate... we'll say
Gold for arguments sake) is affected by Red visable light one way, Blue light another, Infer light another way, radio wave yet another, and cosmic wave yet a 5th way...
Some colors are absorbed (blue lets say), others like Red and Inferred-<heat> are highly reflected meaning it takes alotta Infered to heat it up, and some cosmic waves of light will simply pass right on through the
Gold bar without even effect it in the slightest (they are Phased towards each other-invisible) and thus regardless of wattage, will not harm the gold.
If you change the EM feild of matter, you change it's effective
Color and thus its effects on a paticular Or large number of colors of light. This is why gold is a good reflector of heat and is used by
NASA on there Helmets Visors and LEM.