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Nov. 22nd, 2005 01:15 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
strredwolfAn odd thought came into my mind, and it may be worthy of an experment by someone more capable.
We have red, green, and blue lasers now, both throwing out different wavelength light. If I understand correctly, you can adjust the brightness of each laser, by adjusting three key (and several minor) variables, one of which is how much power is pumping through each laser.
What would happen if you take these lasers, up to an equal power level, and aim them at a single point in 3D space? Would you get a point of white?
If so, what would you get if you adjust the power down on all of them? Would you get shades of grey?
What if you adjusted only the red down? Or the blue? Or maybe the green? Could you get different colors?
If you could, what would happen if you swept the three lasers in such a way that you could create a mid-air display? Could a laser be turned on/off that quickly, or would you have to keep it on and use a door/gate mechanism to shutter it on/off quickly?
Could you get a good frame rate?
Could you play any movie on it, in mid-air, like it was a movie screen?
Could you extend it, from 2D to 3D?
Could you create a Holodeck? Or a PHISH tank?
This sermon brought to you by the Church of the Waiting Canmephian.
We have red, green, and blue lasers now, both throwing out different wavelength light. If I understand correctly, you can adjust the brightness of each laser, by adjusting three key (and several minor) variables, one of which is how much power is pumping through each laser.
What would happen if you take these lasers, up to an equal power level, and aim them at a single point in 3D space? Would you get a point of white?
If so, what would you get if you adjust the power down on all of them? Would you get shades of grey?
What if you adjusted only the red down? Or the blue? Or maybe the green? Could you get different colors?
If you could, what would happen if you swept the three lasers in such a way that you could create a mid-air display? Could a laser be turned on/off that quickly, or would you have to keep it on and use a door/gate mechanism to shutter it on/off quickly?
Could you get a good frame rate?
Could you play any movie on it, in mid-air, like it was a movie screen?
Could you extend it, from 2D to 3D?
Could you create a Holodeck? Or a PHISH tank?
This sermon brought to you by the Church of the Waiting Canmephian.
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Date: 2005-11-22 07:22 am (UTC)The problem is that lasers do not "combine" as light since they emit only one wavelenght. You'd need the semiconductor to not emit various waveforms. It's probably too difficult, but if you were to try and mix the lasers you'd see three dots like in lcd, crt and plasma screens.
As for white/grey, no that wouldn't be possible, it would be different power level of white. If you've noticed, lasers are maximum brightness concentrated directional light. Remember, that's why a laser burns your retinas, because the lens of your eye changes the focus to amplifiy like a magnify glass.
Look at wikipedia.
Besides to make a holodeck, you need something for the laser to reflect off of, you'd need to make it reflect off nitrogen molocules in air, otherwise you have to add smoke/fog/misc-carcinogen to the air to see it.
Did you ever see SeaQuest DSV? The original season (one of the first tv shows to use 3D CG on a regular basis) the computer hologram was generated by a fog machine and a projection.
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Date: 2005-12-07 05:39 am (UTC)And I just finally got the emails for this post.