

Compounding lasers, really?
#41
Posted 19 July 2012 - 10:58 AM
#42
Posted 19 July 2012 - 11:03 AM
Tommytools, on 19 July 2012 - 09:40 AM, said:
Lasers being visible?... Ok, can live with that, battlefields tend to be very smoky/dusty environments after all.
But lasers compounding to different colours? ... Maybe its my aspergers acting up, but that REALLY rubs me the wrong way...
Lasers are coherent light, meaning it is VERY directed and focused. To compound 2 different wavelengths they HAVE to be travelling parallel in the exact same plane. To get the beams to travel in parallel and close enough to affect eachother they HAVE to share a focusing device (lens or mirror), which makes it impossible for two seperate and distinct lasers (IE not sharing a focusing device) to ever compound in the manner shown in the video.
Nevermind the fact that combining two waves CHANGES the properties of said wave (I even wrote a wave simulator program doing just that in Turbo Pascal back in high school). A combination of a small and a medium laser would (under ideal circumstances described above) create a combined laser, not two seperate "projectiles". It could also cause the resulting wave to amplify itself, then cancel itself out, then amplify itself... ((Side note: isn't that how pulse lasers work?))
Its been a while since I did any work in optics, so if I have made any blatant mistakes please feel free to bash me for them

Thoughts?
TT
Internet Robots are certainly Srs Bsns.
I often ask myself, HTF do LRM20 launchers reload themselves? So there is this missile pack mounted on my shoulder containing 20 missiles. Great. So I shot all 20 missiles in a single salvo. Awesome. So now my missile pack should require a crew of technicians to remount the missiles right? NEWP! NOT REALISTIC! *** RAGEQUIT!
#44
Posted 19 July 2012 - 11:13 AM
Brenden, on 19 July 2012 - 10:47 AM, said:
Several explanations:
1) artistic license - authors cannot be expected to be physicists.
2) Secondhand accounts - any non-projectile attack can be assumed to be a laser. If the attack was described to a Mechwarrior, they may mentally add the tarcom details themselves.
3] Witchcraft. All observers are pagan witches and should be burned.
#45
Posted 19 July 2012 - 11:14 AM
Gabopentin, on 19 July 2012 - 10:01 AM, said:
Aren't you glad, when they came up with Battletech back in '84, they didn't do like a lot of movies were doing back then and set their future date out to say oh, 1999... or 2010?

Makes it easy when we can just say, "dude bro, it's 3049. Anything can happen."
#46
Posted 19 July 2012 - 11:19 AM

#47
Posted 19 July 2012 - 11:20 AM
#48
Posted 19 July 2012 - 11:28 AM
Smells like masses of dead catgirls.
Besides that, a Fibre laser with different Inputs but same outgoing fibre cable could give you a multicolor lightshow.
#49
Posted 19 July 2012 - 11:41 AM
thontor, on 19 July 2012 - 11:18 AM, said:
Don't be so sure on that; I didn't look too carefully, but a lot of times in those videos the target they're fighting isn't actually targeted. God-knows why. ****** me off something awful.
#50
Posted 19 July 2012 - 11:45 AM
My suspicion, then, is that the player who recorded these videos had his color calibration out of whack. Removing a lot of green or blue (if, say, his monitor was oversaturating one of those colors) would leave an in-game video that was muted in that spectrum - taking Blue toward Purple, and Green toward Yellow.
Aside from some other feature we haven't been told about, I cannot think of any other explanation.
#51
Posted 19 July 2012 - 11:49 AM
#53
Posted 19 July 2012 - 12:37 PM
I was quite excited by the compounding colors of light, but your explanation totally makes sense and has bummed me out with its logic.
Way to go!

Lets skip any explanation in the future about how unlikely it is to be fighting on hundreds of terra-formed worlds with near close to 1G.
#54
Posted 19 July 2012 - 07:47 PM
#55
Posted 19 July 2012 - 07:59 PM
Tommytools, on 19 July 2012 - 09:40 AM, said:
Lasers being visible?... Ok, can live with that, battlefields tend to be very smoky/dusty environments after all.
But lasers compounding to different colours? ... Maybe its my aspergers acting up, but that REALLY rubs me the wrong way...
Lasers are coherent light, meaning it is VERY directed and focused. To compound 2 different wavelengths they HAVE to be travelling parallel in the exact same plane. To get the beams to travel in parallel and close enough to affect eachother they HAVE to share a focusing device (lens or mirror), which makes it impossible for two seperate and distinct lasers (IE not sharing a focusing device) to ever compound in the manner shown in the video.
Nevermind the fact that combining two waves CHANGES the properties of said wave (I even wrote a wave simulator program doing just that in Turbo Pascal back in high school). A combination of a small and a medium laser would (under ideal circumstances described above) create a combined laser, not two seperate "projectiles". It could also cause the resulting wave to amplify itself, then cancel itself out, then amplify itself... ((Side note: isn't that how pulse lasers work?))
Its been a while since I did any work in optics, so if I have made any blatant mistakes please feel free to bash me for them

Thoughts?
TT
english dude....english
#57
Posted 09 September 2012 - 11:10 PM
Veevslav, on 19 July 2012 - 10:57 AM, said:
Lasers can currently be assigned different colors.....
As to them being visible.... If we create steam the laser is easily noticeable... Now take our current lasers that are weak pathetic things and increase the power output to about 50000 times and watch as air with minimal moisture gets steamed instantly from it passing through..... There you have visible lasers of different colors based on the lasers original color........
There are videos easily found on google of handheld lasers (not even laboratory tabletop monsters!) powerful enough to be seen in broad daylight. They make great emergency signalling devices...nothing says "I'm HERE!" like a bright green bar of light shooting out of your hand.
However, combat laser weaponry would likely be in the IR range since you get superior thermal absorption on target from the red end of the spectrum for the same power output...and you'd better have one heck of a pair of laser shades or you'll go blind from specular reflections

#58
Posted 09 September 2012 - 11:34 PM
Period.
#59
Posted 09 September 2012 - 11:38 PM
Now, I'm no scientist but I play one on TV and if a 5mW beam is visible, why not a fussion reactor powered beam?
#60
Posted 09 September 2012 - 11:47 PM
If this is how you think about things like lasers, Sci-fi is not for you.
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