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Laser Reflection


Betuor

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If your laser can burn through advanced alien armour, I don't see how it could spend more than a picosecond or so reflecting or refracting before your glass window is an exploded molten mess.

Melting, exploding, etc come from absorbed energy.

If energy isn't absorbed, it doesn't cause effects.

You don't act surprised that air manages to withstand a laser that destroys armor, do you?

If the laser is in visual band and the glass is clean enough, it will split into reflected and refracted beams.

With dirty glass it depends.

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Melting, exploding, etc come from absorbed energy.

If energy isn't absorbed, it doesn't cause effects.

You don't act surprised that air manages to withstand a laser that destroys armor, do you?

If the laser is in visual band and the glass is clean enough, it will split into reflected and refracted beams.

With dirty glass it depends.

It seems to me that at high power levels if the glass has any dirt or imperfections it's going to blow. I'm pretty sure the lasers wouldn't be in the visible frequencies anyway. The little research I did shows all military lasers at really short wavelengths.
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If energy isn't absorbed, it doesn't cause effects.

You don't act surprised that air manages to withstand a laser that destroys armor, do you?

If the laser is in visual band and the glass is clean enough, it will split into reflected and refracted beams.

With dirty glass it depends.

And that argument completely falls on its ass when you realise that glass will still absorb enough energy to be destroyed. There are no perfect mirrors, making an armor out of mirrors wouldn't work. And same goes for windows. A military high power laser weapon will destroy objects found in everyday life.

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And that argument completely falls on its ass when you realise that glass will still absorb enough energy to be destroyed.

The laser beam you are firing already has to pass through a few pieces of glass - its focusing lenses. Not the same glass or glass at all, but still all the same concerns. Assuming it's one of those visible lasers we see in games.

Being military doesn't make it instant deathray, it's still just a beam of light and behaves like one. The glass will be destroyed with enough power, but reflected and transmitted beams will still deliver a large fraction of the energy.

There are no perfect mirrors, making an armor out of mirrors wouldn't work.

Of course it will, to an extent. Simply painting your armor white instead of Tacticool Black will reduce absorbed energy by an order of magnitude. That can be the difference between death and a trip to the paint shop. Silver will do better.

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Nobody also even knows what 'kind' of laser that they are using. The setting is the 70s, it could just be a supped up laser pointer.
Well, non-visible spectrum lasers have been available for a long time. Also, it's pretty much a given that visible spectrum lasers aren't much good as weapons. I think we pretty much have to assume any kind of weaponized laser will be more than a supped up laser pointer. It would probably be a CO2 laser of some type. For more information:

http://en.wikipedia.org/wiki/Directed-energy_weapon

http://en.wikipedia.org/wiki/Carbon_dioxide_laser

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Well, non-visible spectrum lasers have been available for a long time. Also, it's pretty much a given that visible spectrum lasers aren't much good as weapons. I think we pretty much have to assume any kind of weaponized laser will be more than a supped up laser pointer. It would probably be a CO2 laser of some type. For more information:

http://en.wikipedia.org/wiki/Directed-energy_weapon

http://en.wikipedia.org/wiki/Carbon_dioxide_laser

Not entirely true. Well, it is, but not in a direct sense.

Lasers can be made to have various harmonics. It's entirely possible that the primary beam which carries the juice is invisible due to being IR or similar, but the second or third harmonic could be in the visible range, so you'd still see a visible beam.

http://en.wikipedia.org/wiki/Second-harmonic_generation

Also, worth following the link to http://en.wikipedia.org/wiki/Nonlinear_optics for further topics of interest

Edited by Buzzles
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For the purposes of the game, if a weapon which I have to put time, manpower and money into to first research, then build, is crapper than a weapon which I don't, then why the hell did I go to all that effort in the first place? This is the persistent problem with the AfterX lasers. There's no point putting the time and energy into researching or building them, because other weapons do it better, cheaper. If there's a serious detriment to using lasers, then fuck lasers. I'll keep with ballistics and go straight to plasma.

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A smoke wall from a Smoke grenade however should be blocking off laser beams entirly, since Lasers are just concentrated light beams. Might be an interesting Laser weapons countermeasure for Aliens

Highly concentrated, very hot laser beams that, again, should only have to expend a very small proportion of their energy burning through the particulates in smoke.

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