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/sci/ - Science & Math

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1205301 No.1205301 [Reply] [Original]

>The word "laser" is an acronym for "light amplification by stimulated emission of radiation." The technology turns atomic particles into light with enough radiation to damage an object it encounters.

>turns atomic particles into light

http://articles.latimes.com/2009/mar/19/business/fi-laser19/2

>> No.1205307

:|

>> No.1205317

la times cant do science

>> No.1205320

okya so how does a laser REALLY work?

>> No.1205334
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1205334

>light with enough radiation
Newspapers should just hire people with science backgrounds and train them in journalism instead of the other way around

>> No.1205335

>>1205320

Basically, it excites atoms who then emit photons. These photons bounce off the inner walls of the laser until they can escape through a partially transparent mirror. By this point, the light will have been amplified significantly, resulting in a high-energy beam. Also, all photons go in the same direction, because there's only one direction they can go to escape the tube.

>> No.1205338

>>1205320
Magnetic fields direct light in a laserly fashion.

>> No.1205340

>>1205335

Oh, also, because the photons emitted all come from atoms with the same amounts of energy, they'll all have the same energy and thus the same wavelength and colour.

>> No.1205348

Don't give light too much radiation! It'll create a black hole just like will happen at the LHC!

>> No.1205354

>>1205335
So how do I restrict the light of the laser to say one meter so I can have a cool light saber?

>> No.1205358 [DELETED] 

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>> No.1205363

>>1205354
Have a think cylinder of transparent material around where the laser beam will go, and put a mirror at the end of that. Then it at least sort of looks like a lightsaber...

>> No.1205371

>>1205354
>>1205363
I always assumed that a light saber would be made of plasma.

>> No.1205376

>>1205371
Nah magnets bro

>> No.1205384

>>1205376
Magnets to hold plasma in place...

>> No.1205390

>>1205384

could i use a tesle like idea to create an invisible electromagnet in a hollow tube around plasma to make lightsabre?

>> No.1205398

>>1205390
I say we have the electromagnet in the handle, and then the magnetic field is controlled and modified to try and keep the plasma in the right shape.