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        riddles >> microsoft >> I Got Slashed By A Laser Beam
        
(Message started by: william wu on Nov 20^th, 2003, 11:26am)

Title: I Got Slashed By A Laser Beam
Post by william wu on Nov 20^th, 2003, 11:26am

I have a wand which fires a laser beam. The laser beam produced has a thickness of x millimeters, and has an intensity strong enough such that if I fire the beam at a human body, the beam will come out the other side of the body. With activated wand in hand, I now sweep the laser beam across your waist, Jedi-style. What happens? Do you get sawed in half?

(certain details are purposely not given; you can give conditions necessary for various things to happen or not happen)

Title: Re: I Got Slashed By A Laser Beam
Post by James Fingas on Nov 20^th, 2003, 12:09pm

No. My hand has already been cut off (Jedi-style) and replaced by a robotic hand (Jedi-style). Its metallic wrist deflects the beam (Jedi-style) back onto you, cutting you in half (Jedi-style).

Title: Re: I Got Slashed By A Laser Beam
Post by towr on Nov 20^th, 2003, 12:17pm

[hide]What frequency of light is the laser? I suppose if it goes through my body de wavelength will be less than half a meter.. Doesn't narrow it down much though. Most light in that region still won't do any damage, so not much would happen..[/hide]
Also what would happen is that I'd probably get annoyed at the wooshing sound you produce while emulating 'jedi-style'.. ;D

Title: Re: I Got Slashed By A Laser Beam
Post by Icarus on Nov 20^th, 2003, 4:51pm

[hide]Actually, the longer wavelengths can be said to go through body - in that they arrive at the other side essentially unchanged - and with you unchanged as well.[/hide]

Title: Re: I Got Slashed By A Laser Beam
Post by maryl on Nov 22^nd, 2003, 11:13am

Reminds me of lightning striking somebody, it won't saw you in half, just fry your insides; and also an x-ray; doesn't it depend on what kind of beam it is.

Title: Re: I Got Slashed By A Laser Beam
Post by towr on Nov 23^rd, 2003, 7:15am

yep, it will.. A large part of the spectrum will get through your body at very low intensities and wouldn't cause much harm even at large intensities..
Besides, a 'visible light' laser would burn, more than saw, through tissue..

Title: Re: I Got Slashed By A Laser Beam
Post by SingGloryHallejuah on Mar 30^th, 2004, 5:17pm

Light
Amplication [by]
Stimulation [of]
Emission
Radiation

This is true.

If you were in fact to shine a laser inside your mouth and out through your cheeck you would in fact see the light (if you looked in the mirror). The light would go through your skin, but not harm you.
In theory, if there was a light strong enough to go through your waist and come out the other side it wouldn't nessecarlily harm you, because if you shine a laser pointer on your finger, your finger lives. However, the question comes to the point that if the laser was in fact hot because of its brightness. Then one comes to the question, is light a wave or a particle.
Furthermore, this question is quite fun, yet haphazard. However the title says I got slashed by a laser beam, which, slash, by definition is "To make a gash or gashes in...To cut a slit or slits in" (dictionary.com). This in turn implies that you were in fact cut in half.

Title: Re: I Got Slashed By A Laser Beam
Post by Xeno on May 5^th, 2004, 12:38pm

hmmm....the reference to star wars...if you watch the movie and read the books,the laser thats emitted is so hot that it WILL go through you and "cut" you in half,but as it does that,since it's so hot,it will quaterize the wound and therefore,you were cut but instantly back together again.this is why in the movie theres no blood. ;D

Title: Re: I Got Slashed By A Laser Beam
Post by boyankir on Nov 25^th, 2008, 7:49am

I just bought a green laser pointer from .green laser pointer (http://www.freaklasers.com),I think laser pointer below 50mw is safe

Title: Re: I Got Slashed By A Laser Beam
Post by SMQ on Nov 25^th, 2008, 7:58am

Hmm, a new user resurrecting a four-and-a-half-year-old thread to add a comment of marginal relevance with a link to a commercial website. If it's spam, it's sure not very effective. ;)

--SMQ

Title: Re: I Got Slashed By A Laser Beam
Post by towr on Nov 25^th, 2008, 8:04am

on 11/25/08 at 07:49:43, boyankir wrote:

I just bought a green laser pointer from http://www.laserto.com/green-laser-pointer.html (http://www.laserto.com/green-laser-pointer.html),I think laser pointer below 50mw is safe.

Yeah, but we don't want safe, we want to slash and burn.
http://www.wickedlasers.com/ sells a 1000 mW (so 1 watt) laser.

Title: Re: I Got Slashed By A Laser Beam
Post by Grimbal on Nov 25^th, 2008, 9:28am

Are there such things as X-ray lasers?

Title: Re: I Got Slashed By A Laser Beam
Post by towr on Nov 25^th, 2008, 10:14am

on 11/25/08 at 09:28:55, Grimbal wrote:

Are there such things as X-ray lasers?

yes (https://www.llnl.gov/str/Dunn.html)

Title: Re: I Got Slashed By A Laser Beam
Post by hamzak on Nov 25^th, 2008, 6:12pm

really guys? i mean the light sword FIRES laser beams not a continious controlled light that is controlled by hollywood if he slice him jedi stlyle he would get a bruise unless he fired while he was sliceing which is also unlikley because it would just shoot behind him

trying to make that make sense but in my mind it does..

Title: Re: I Got Slashed By A Laser Beam
Post by Random Lack of Squiggily Lines on Nov 27^th, 2008, 6:07pm

The light sabre has a defined diameter up to a certain point, were it is no longer relevant.

"It cut Luke's hand, but dissolved Obi wan"

Title: Re: I Got Slashed By A Laser Beam
Post by JiNbOtAk on Nov 28^th, 2008, 1:24am

on 11/27/08 at 18:07:49, Random Lack of Squiggily Lines wrote:

"It cut Luke's hand, but dissolved Obi wan"

Don't forget that it also burn a hole in Quigon, without burning his clothes, but still managed to (nearly) penetrate a steel door.

Title: Re: I Got Slashed By A Laser Beam
Post by Random Lack of Squiggily Lines on Nov 28^th, 2008, 1:57pm

Point taken. I was only thinking of the First/last 3(New Hope, Return of the Jedi, The Empire Strikes Back)

Title: Re: I Got Slashed By A Laser Beam
Post by GabrieleFurbin on Jan 19^th, 2012, 4:54am

In reality most lasers are not going to cut anything thicker than an inch or so due to beam divergence.

Title: Re: I Got Slashed By A Laser Beam
Post by katary on Mar 16^th, 2014, 3:08pm

By definition the laser is a device that amplifies light by means of stimulated emission of radiation. In other words, the laser is a generator and amplifier of radiation in the form of light. To help understand how the laser beam is produced, let's begin by looking at how light is created at the atomic level.

Title: Re: I Got Slashed By A Laser Beam
Post by fruser on Oct 20^th, 2014, 11:44pm

I bought a 100mw waterproof green laser pointer from laserpointerspro.com 2 weeks ago,I think laser pointer below 500mw is safe

Title: Re: I Got Slashed By A Laser Beam
Post by towr on Oct 21^st, 2014, 8:49am

on 10/20/14 at 23:44:06, fruser wrote:

I bought a 100mw waterproof green laser pointer from laserpointerspro 2 weeks ago,I think laser pointer below 500mw is safe

Well, you're wrong (and probably trying to spam). Under 5mW is fairly safe, because the blink reflex will limit how much light can get in they eye if you're stupid enough to aim it at anyone's eyes (your own included). But higher than that you'll start frying the retina. 5ms at 100mW is enough to do damage, if I read wikipedia correctly.