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How Hot Would a Light Saber Really Be?

Cliff posted more than 8 years ago | from the whizzz-vroom dept.

410

Datagod asks: "Has anyone ever calculated the temperature you would need to be able to slice through steel like it was thin air? How hot would a light saber really need to be? Also, I am assuming that at least some of the metal would be vaporized and the expanding gas would fling bits of molten metal at the saber wielder. Wouldn't your average Jedi be horribly scarred from all this."

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410 comments

2nd post (5, Funny)

glassjaw rocks (793596) | more than 8 years ago | (#15040276)

april fools! it's first.

Very hot. (2, Funny)

blues_shuffle (921429) | more than 8 years ago | (#15040278)

Very hot.

Re:Very hot. (1, Interesting)

dnoyeb (547705) | more than 8 years ago | (#15040290)

Somewhat hot.

Re:Very hot. (5, Informative)

kryten_nl (863119) | more than 8 years ago | (#15040317)

Very, very cold.

As the anti-protons move at uniform speed and the temperature is defined by the relative speed of particles wrt the flow.

Well... (0)

Anonymous Coward | more than 8 years ago | (#15040324)

...hotter than you'd like it.

Re:Very hot. (0, Troll)

mOOzilla (962027) | more than 8 years ago | (#15040358)

Luke warm but dont tumble dry it as it will shrink.

Re:Very hot. (5, Funny)

ozmanjusri (601766) | more than 8 years ago | (#15040386)

Luke warm

Luke warm maybe, but Leia in slave-dress is hot.

Re:Very hot. (0)

Anonymous Coward | more than 8 years ago | (#15040393)

Luke warm maybe, but Leia in slave-dress is hot.

Indeed [hyperborea.org] .

I don't think it's the heat that does the cutting (2, Insightful)

Dr. Spork (142693) | more than 8 years ago | (#15040401)

I always pictured the light saber to be something like tamed lightning. As it cuts metal, it doesn't melt it from heat but from the actual cutting action of really fast elecrons (or whatever) colliding with and knocking loose whatever the light saber touches. Except it couldn't be electrons because they'd be grounded out by the metal they're cutting, so it's some other sort of particle.

Re:Very hot. (3, Funny)

Anonymous Coward | more than 8 years ago | (#15040416)

About as hot as me on a Saturday night when I've got my disco suit on and I'm all ready for a hot time with the chicks on the dance floor with the Bee Gees in the background as I show her my John Travolta moves and take her back to make out on my watebed with soft light from the lava lamp afterwards.

teh h0t (1)

grendel03 (926696) | more than 8 years ago | (#15040280)

I think the heat from a light saber is like, local.

here's hoping (1)

icepick72 (834363) | more than 8 years ago | (#15040286)

Hey maybe even I can get an article posted today! My article submissions obviously aren't prime-time material but from what I'm seeing on this special day .... off to do some submissions.

Duh (3, Insightful)

TheRealMindChild (743925) | more than 8 years ago | (#15040287)

A real Jedi would jusst use the force to repel any bits away from him!

Re:Duh (5, Funny)

coso (559844) | more than 8 years ago | (#15040385)

Mace Wendu: I don't want no muthafrakking metal bita coming at my muthafrakking eyes! I will not be some blind-ass
Stevie Wonder jedi. ...and this the JEDI adopted OSHA standards.

It is a time of great eye protection in the republic.

Eyeprotection worn by leading scientists without the force powers to deflect metal bits from their eyes.

They found the lightsaber:
Was developed from an ancient bread-slicer / toaster.
Contains 1.21 gigawats of power between recharge of it's flux capacitors.
Ranges from 350F to 50000F (battery life may suffer from extended operation, and overheating may occur at high temperatures.
Still makes a tasty grilled cheese sandwich in a pinch.
It was a dark time in the Republic.
Mainly because light sabers are really, really bright at high temperatures.
So bright as to be blinding.
Hence the recall. ........
*sigh* and so the 100th episode of the Star Wars series aired... in gravity distorting 3-D.
1138 left to go.

Re:Duh (1)

emilv (847905) | more than 8 years ago | (#15040425)

But then he would have to repell many megabits/s :|

spoiler warning!! (2, Funny)

oedneil (871555) | more than 8 years ago | (#15040288)

Isn't this why Vader wore that mask? Sorry, I missed episode 3 so I'm not sure.

Not just heat. (0)

Anonymous Coward | more than 8 years ago | (#15040289)

Power.

Wickedlasers (4, Funny)

cyber_rigger (527103) | more than 8 years ago | (#15040292)

Buy one and point it at a thermometer.

http://wickedlasers.com/ [wickedlasers.com]

O.K. so these aren't really lightsabers.

Re:Wickedlasers (4, Informative)

kaan (88626) | more than 8 years ago | (#15040335)

omg for a second there i thought you posted a url to http://wickedweasel.com [wickedweasel.com] .

*phew* that was close!

Your question ties into another question (0)

Anonymous Coward | more than 8 years ago | (#15040296)

Could god create a burrito so hot, that he himself could not eat it?

Could Jesus microwave a burrito (1)

Aqua OS X (458522) | more than 8 years ago | (#15040330)

Worst. Quote. Ever.

The correct quote is:
"Could Jesus microwave a burrito so hot that he himself could not eat it?"

pshh

It'd be cold, actually... (0)

Anonymous Coward | more than 8 years ago | (#15040297)

Freezing cold, actually. It'd make your bladder freeze. That means... PISS FROST!

Nanotechnology (5, Interesting)

Travoltus (110240) | more than 8 years ago | (#15040298)

A nanotech style light saber would be the best way to go. Nanites could burn through their target and work on a whitelist principle: a friend's DNA would be ignored.

Quite literally you could ram your nanotech light saber through a hostage taker and the nanites would decline to harm the whitelisted hostage.

I can't believe no one else thought of this. PATENT!!!!!! OMFG I am teh pwnz0r take that George Lucas!!!!!!

Re:Nanotechnology (0, Troll)

Asmor (775910) | more than 8 years ago | (#15040347)

I'm totally stealing that for D20 Future if I ever run a game.

If your lawyers ask, my address, here's my email address:

Theresa Bombinthisletter (the name's Ukranian, I get asked all the time)
1600 Pennsylvania Ave
Washington, DC 20500

Re:Nanotechnology (1)

GeoffP (884807) | more than 8 years ago | (#15040443)

Odd, that looks like a mailing address, not an e-mail address. Are you using Hotmail?

Re:Nanotechnology (1)

X0563511 (793323) | more than 8 years ago | (#15040368)

Maybe a dart with nanos suspended in a neutral fluid would work better. that way you can do it from a distance.

Light sabers are not hot (5, Insightful)

tuxlove (316502) | more than 8 years ago | (#15040302)

Light sabers work at the subatomic level, disintegrating matter. However, heat is generated within resistant materials, giving the impression that the sabers themselves are actually hot. Don't the slashdot guys know this?

Re:Light sabers are not hot (5, Funny)

neoform (551705) | more than 8 years ago | (#15040383)

You know, it's just a sci-fi movie right? These things don't exists, so why are you explaining how they actually work?

Re:Light sabers are not hot (0)

Anonymous Coward | more than 8 years ago | (#15040405)

Perhaps because the story is asking how hot they would have to be.

Re:Light sabers are not hot (2, Insightful)

jakethejuggalo (718693) | more than 8 years ago | (#15040432)

agreed. one of the tests to see if you built a lightsaber properly is to hold the blade near your hand and see if it emits heat. if it does not, you've built it properly. (i believe that was in one of the jedi academy books)

Hot enough to bring down WTC7 (1)

revscat (35618) | more than 8 years ago | (#15040303)

It wasn't structural weakness [dodtechmatch.com] that brought it down, it was a Sith Lord.

In your heart, you know it's true.

As hot as... (5, Funny)

killerface (573659) | more than 8 years ago | (#15040306)

not as hot as the pink on the site

Re:As hot as... (0, Offtopic)

Romancer (19668) | more than 8 years ago | (#15040372)

Seriousy, mod this up.

I'm not kidding.

That was funny shit.

Use the Force... (5, Funny)

aktzin (882293) | more than 8 years ago | (#15040307)

"Wouldn't your average Jedi be horribly scarred from all this."

Not necessarily, Padawan. If a Jedi cuts through a door/bulkhead/vehicle with a light saber s/he could avoid getting splashed with melted metal by applying a subtle Force push along with the slicing motion of the saber. To Saber 101 class you should return, youngling. ;)

The real question is really... (4, Funny)

TeacherOfHeroes (892498) | more than 8 years ago | (#15040308)

More importantly, could a Jedi make a light sabre so hot that he himself could not wield it?

Re:The real question is really... (1)

damiam (409504) | more than 8 years ago | (#15040427)

Sure. No one said Jedis were omnipotent.

My calculations say ... (4, Funny)

RubberDuckie (53329) | more than 8 years ago | (#15040310)

The light saber would need to be 6241 F to cut through metal. At that temperature, the metal would be separated into sub-atomic particles called 'fooltrons'. As I'm sure you are aware, fooltrons are far to small to cause damage to the human body.

Re:My calculations say ... (4, Funny)

Austerity Empowers (669817) | more than 8 years ago | (#15040333)

Incorrect. Nothing is fooltron proof.

Re:My calculations say ... (0)

Anonymous Coward | more than 8 years ago | (#15040445)

The light saber would need to be 6241 F to cut through metal.


In that case, it would be easier to make the light saber use metric system, 3450 C would suffice.

Mod me please? (5, Interesting)

4D6963 (933028) | more than 8 years ago | (#15040311)

OK, since today the weirdest stuff happens out here, can I get this comment modded up? Looks like there just has to ask. Thanks alot.

Re:Mod me please? (4, Funny)

gardyloo (512791) | more than 8 years ago | (#15040342)

If only I had mod points. I wasted them all just before the pink crap showed up.

Re:Mod me please? (5, Insightful)

4D6963 (933028) | more than 8 years ago | (#15040392)

It's all good, today is not a good day to have mod points anyways, I guess.

Seeing how the grand-parent got modded, I conclude that I hardly understand any logic in the modders mind anyways. Instead of considering using quasars for encryption, they should rather consider using /. mods.

Re:Mod me please? (0)

Anonymous Coward | more than 8 years ago | (#15040447)

"a lot" is two words.

Afraid (4, Interesting)

Soulfader (527299) | more than 8 years ago | (#15040313)

I don't know what the most frightening aspect of this topic is.
  • The extraordinarily detailed answers from people who spend a lot of time thinking about this sort of thing.
  • The retarded answers from people who don't spend a lot of time thinking about this sort of thing.
  • The retarded jokes forthcoming about people's pulsing hot lightsabers
  • The prospect of spending all day sifting through stuff like this looking for real news
  • The fact that I'm rather curious about this myself.
I know very little of physics, Star Wars or other. So I shall link to the disturbing Star Wars-related musings [sigspace.net] of my friend instead.

Re:Afraid (0)

Anonymous Coward | more than 8 years ago | (#15040376)

whats more frightening is that you created a bullet point list and took the time to plan out your post.

Re:Afraid (1)

Quaoar (614366) | more than 8 years ago | (#15040404)

I think the most frightening part is that half of your list hasn't even appeared in the thread yet...

Re:Afraid (1)

crayz (1056) | more than 8 years ago | (#15040413)

Yep. This guy had like post #4 in the thread. It was a nice troll though

Re:Afraid (1)

MobileTatsu-NJG (946591) | more than 8 years ago | (#15040429)

"I don't know what the most frightening aspect of this topic is.
-The extraordinarily detailed answers from people who spend a lot of time thinking about this sort of thing.
-The retarded answers from people who don't spend a lot of time thinking about this sort of thing.
-The retarded jokes forthcoming about people's pulsing hot lightsabers
-The prospect of spending all day sifting through stuff like this looking for real news
-The fact that I'm rather curious about this myself."


The retarded "Here's an almost comprehensive list of what's wrong with this topic..." posts.

How hot? enough to burn the user? (4, Insightful)

Bananatree3 (872975) | more than 8 years ago | (#15040315)

Looking at this comment I found [bautforum.com] , the author makes a good arguement: If the light sabre were hot enough to easily melt stuff, wouldn't it radiate so much heat that it would burn the user?

Hot? What about cold? (0, Troll)

Paulo's News (964647) | more than 8 years ago | (#15040316)

How do we know the light saber is hot? What if it is just really really cold?

Paulo's News: Apple CEO Steve Jobs, conservative pundit Tucker Carlson are Father and Son [paulosnews.com]

Re:Hot? What about cold? (1)

Luigi30 (656867) | more than 8 years ago | (#15040345)

Well, it melted a door in Episode 1 when Qui-Gon jammed it through to make a hole.

Re:Hot? What about cold? (1)

aktzin (882293) | more than 8 years ago | (#15040373)

We know a light saber is hot because Qui-Gon Jinn used his to melt through a thick blast door on board a Trade Federation ship. This was at the beginning of Episode I. Remember, the door was glowing orange and liquefied metal was sliding from it. I don't think that would have happened with a cold or room-temperature blade.

What I want to know is (3, Funny)

rsilvergun (571051) | more than 8 years ago | (#15040318)

could you toast marshmallows with a light sabre. On the one hand, there's plenty of energy, on the other hand the energy doesn't seem to go very far from the blade. I'm sure if you just touch the blade to the marshmallow it'll just vaporize though. Perhaps a wise Jedi, skilled in the force, could do this. Or maybe force lightnight. I guess you could heat a rock with a sabre and then toast with that, but it's just not the same.

Shadows (2, Insightful)

Bombula (670389) | more than 8 years ago | (#15040319)

I remember getting scolded by some fanboys for suggesting that lightsabers should cast no shadows (apparently they must cast shadows since shadows were present in Episode 4...) because the cutting edge - whether plasma or whatever else - would need to be hairline-thin regardless of temperature in order to slice through things without causing unmanageable explosions of melted and vaporized target material.

All your answers ... (5, Informative)

psergiu (67614) | more than 8 years ago | (#15040322)

... are HERE [howstuffworks.com] .

Hmm... (1)

dtrmp4 (847126) | more than 8 years ago | (#15040325)

This post isn't girly enough! What will the girl users thing?!

Re:Hmm... (1)

4D6963 (933028) | more than 8 years ago | (#15040415)

This post isn't girly enough!

Exactly what I thought. I thought today all posts would be like "LMLAO OMFG ROFL KAWAII CHECK THIS SITE OUT!!!! G2G TTYL WUN!!!"

I am disappointed.

OMG!!! (0)

Anonymous Coward | more than 8 years ago | (#15040326)

OMG HOT [solarviews.com] !!! LOL!!!

It's not an issue of just temperature (3, Informative)

xiphoris (839465) | more than 8 years ago | (#15040328)

It's an issue of temperature AND power.

Consider this: how hot does something have to be to melt an ice sculpture? Well, a match would do it, except a match can't provide the power necessary to melt a significant amount of ice.

You need the temperature necessary to turn steel into a vapor (look that up on a periodic table of elements); you also need the power necessary to turn some mass (per second) of steel into vapor. Anyone with a background in chemistry should be able to look up the required information on a standard periodic table.

The equation will look like this:

(Steel's specific heat) * (volume of steel to vaporize per second) * (temperature difference) = power necessary.

Re:It's not an issue of just temperature (5, Insightful)

heiders (811021) | more than 8 years ago | (#15040348)

Dunno about you, but I've never seen "steel" on my periodic table. Maybe I have the unpatched version...

Re:It's not an issue of just temperature (0)

Anonymous Coward | more than 8 years ago | (#15040384)

I'm a welder. I work with steel every day. Both Galvanized and Stainless.

You would be surprised by the number of people that don't seem to know that steel isn't an element. *sigh*

Start your calculators! (1)

Crizp (216129) | more than 8 years ago | (#15040329)

With some geeks having actually having calculated the force needed to tip an AT-ST walker (or the weight of a walker or something - I've seen the site years ago and tried googling but found nawt) using a suspended log, I guess someone would be glad to help you out.

More importantly, how hot would a lightsaber need to be to cut a pony into sausages? Pink hot?

Probably about as hot as an Ewok is deadly. (2, Interesting)

GnoWay (964578) | more than 8 years ago | (#15040332)

I always though it was funny that people did not buy into the success of the Ewoks in the last skirmish. They'll buy into death stars, light sabers, but then balk at the Ewoks.

Re:Probably about as hot as an Ewok is deadly. (1)

isny (681711) | more than 8 years ago | (#15040359)

OMG!!! EWOKS!!!

Re:Probably about as hot as an Ewok is deadly. (2, Insightful)

RsG (809189) | more than 8 years ago | (#15040412)

Eh, suspension of disbelief only goes so far.

It's been awhile since I watched the movies. I do remember that it wasn't just the ewoks that bothered me, in terms of suspension of disbelief. Most of what I found hard to swallow about the series was either science/engineering stuff ("laser" weapons that shoot bolts, a planet sized spacecraft with an unprotected vent leading down into the reactor), or plot holes. However, those can be excused if you take a step back and look at star wars as fantasy, rather than sci-fi. It may be unrealistic, but it's mostly internally consistant.

What bothers people about ewoks is that they break from that internal consistancy. Here we have a mighty empire, ruling thousands of systems, with energy weapons, walking tanks and armoured soldiers - and they get their asses kicked by teddy bears with spears. How the hell are we supposed to see the empire as being this massive military superpower, when pointy sticks are all it takes to kick their asses?

I think most people would have been fine with ewoks if they'd at least been carrying stolen imperial guns or something. It still would have been silly, but suspending disbelief would have been simpler.

Re:Probably about as hot as an Ewok is deadly. (1)

zippthorne (748122) | more than 8 years ago | (#15040446)

um.. the vent WAS protected. It was ray-shielded. However, since it was a thermal exhaust vent, it can't be both ray-shielded AND particle shielded: you gotta let something through to bleed off the heat. They chose ray, aparantly prefering the efficiency of evaporative cooling or perhaps they simply considered the risk of energy weapons to be greater than the risk of some crack pilot who'd been shooting wamp rats his whole life.

and.. I thought the whole point of the ewoks was that they happened to be in the right place at the right time for such an insignificant race to affect the course of galactic history. there's a whole allegory thing goin' on there that apparantly you missed.

but... (2, Funny)

bmecoli (963615) | more than 8 years ago | (#15040339)

What does this have to do with ponies? :( I want my ponies! DX

The Holy Grail of lightsabers (2, Insightful)

Centurix (249778) | more than 8 years ago | (#15040350)

They are of course running at room temperature. You think it's heat that cuts through this mental abstraction you call 'matter'?

no, no you are all wrong (1, Troll)

copperboss (965160) | more than 8 years ago | (#15040352)

the correct answer is "who gives a shit?"

Lightsabers work because... (2, Informative)

Dracos (107777) | more than 8 years ago | (#15040355)

Light sabers (and all other Star Wars pseudo-science) work because Lucas has no idea how physics works in reality, and he doesn't understand that there is a point where suspension of disbelief can no longer support the premise,especially in an adult audience.

I was actually asking a serious question... (5, Funny)

Datagod (613152) | more than 8 years ago | (#15040357)

I submitted this as a serious question 24 hours ago (or so). Just my luck, the only time my question gets accepted its april fools, and the whole site is pink! LOL

Re:I was actually asking a serious question... (1)

bloodstar (866306) | more than 8 years ago | (#15040399)

But the real questions:

Is the light sabre hotter than the pink of this site?

Could you get it hot enough to melt the OMG Ponies!!
And last but not least...

Does Sailor Moon wield light sabres? if so... *Swoon*!!

(As a total aside, my room mate stuck a mottled My Little pony on my computer and told me it was my pony because it was all mottled n stuff. So I have my very own Zombie pony.I pointed out the 'OMG ponies!' and she just stared blankly at the screen for a moment, then wandered off to go to work at a strip club.

It's really sad that no one's going to believe this story. It's even more sad that it's actually true. :)

Pretty Damn Hot. (2, Interesting)

UnixRevolution (597440) | more than 8 years ago | (#15040360)

A Lightsaber cuts pretty fast through materials like that. As for the metal bits we'll asume it propels them away from the user, somehow. As for the heat...a portable (55 amp) plasma cutter can cut 1/4" material at roughly 70 inches per minute. The plasma coming out is roughly 24,000 degrees, and is a stream traveling at 20,000 fpm. An industrial cutter can do roughly 1000 inches per minute. I wouldn't imagine its flame is any hotter than 30K degrees. a lightsaber, it seems, cuts WAY faster than that. I wouldn' t know how to estimate its temperature using the given info, but maybe someone else can.

could it be... (1)

torrents (827493) | more than 8 years ago | (#15040361)

is april 1st the one day a year slashdot is just a complete write off...

Re:could it be... (0)

Anonymous Coward | more than 8 years ago | (#15040430)

I'd argue that it's the one day a year it isn't.

Re:could it be... (1)

torrents (827493) | more than 8 years ago | (#15040436)

if you don't get modded up there's something seriously wrong today.

so it depends (2, Insightful)

ridgecritter (934252) | more than 8 years ago | (#15040362)

on how thick the light sabre active region is. If it's only a few molecules thick, the amount of material vaporized will be relatively low, given that most stuff it's slicing doesn't have very high thermal conductivity (limits heat spread away from the blade). It's too late at night to push the specific heat & volume numbers, but as a guess, if the active region could dump, say, 100KW minimum into a 10nm x 2" x 60" volume, there would be plenty of energy to immediately vaporize any material in that small volume. Since there's not much material being vaporized, there won't be much damage to surrounding entities (like the Jedi sword wielder) or fixtures. As for temperature, I think that will depend on the specific heat of the material being sliced, if we assume that the energy integrated over time being dumped into the material is constant. Something with a low specific heat (air, wood) will get to a higher temperature than something like water or flesh. Once you get over around 5000K, everything's a gas. Another way to determine the temperature would be to look at the emission spectrum of the air when the blade is energized. That would tell you how hot the air is within the blade active region. However, there seem to be big differences between the emission spectra of the Good Guys vs. the Bad Guys. That could complicate the determination of temperature. Just like the 4/1 Slashdot color scheme.....

Not hot at all, until.... (1)

MagicDude (727944) | more than 8 years ago | (#15040364)

Part of the canon regarding lightsabers is that they don't use any energy unless they're in contact with something else, something about perfect energy conservation. Thus, lightsabers don't emit heat unless you're using them for something.

No (1)

wrfelts (950027) | more than 8 years ago | (#15040365)

Most of the energy from the molten metal and expanding gas is absorbed into the light saber via the same force that forms the beam in the first place.

geeez! don't youy know anything?!

It's a plasma, contained by magnetic fields. (2, Insightful)

jd (1658) | more than 8 years ago | (#15040378)

However, it's not a simple plasma. It would have to be a high energy density plasma, in order to look solid and act solid.


The example I found of a Tocamac plasma [pppl.gov] is only red, but is 20-30 million degrees C. However, the lightsabers in the original (and therefore One True) Star Wars were white. This means they must be considerably hotter. The page I found on near-solid high energy density plasmas [utoronto.ca] also talks about tens of millions of degrees - my gut feeling would be that to produce totally solid white plasma would require 40-50 million degrees C.


Now, plasmas at that kind of temperature could quite reasonably be expected to slice through almost anything - steel included. Furthermore, anything that was vaporised would be repelled by the magnetic field and thus travel AWAY from the wielder. This does mean that if you are fighting someone with a lightsaber, you will get sprayed with high-energy plasma every time they hit something.


There is one minor problem, though. Energy. If you want to maintain something at 50 million degrees, AND a containment field, a couple of duracel batteries won't cut it. Even lithium batteries will go flat very quickly. My guess is that the handle of the lightsaber, therefore, contains a wormhole linked to a gigantic anti-matter reactor.


All you REALLY need to do, then, is find out where your opponent's reactor is hidden and turn it off. Their lightsaber will then be useless.

Re:It's a plasma, contained by magnetic fields. (2, Informative)

Quaoar (614366) | more than 8 years ago | (#15040440)

A plasma doesn't behave like a black body, so the blade would not become "whiter" as the plasma got hotter. The plasma of choice would have a couple of visible spectral lines (depending on the gas you ionize), and making the plasma "hotter" would just make those specific colors brighter. You can doubly ionize and even triply ionize the gas, but these transitions typically fall out of the visible range.

Also, the magnetic field by itself would just constrain the particles to the axis of the saber. There's no guarantee that the stuff you vaporize will fly away from the handle, it could just as easy fly towards the handle. I would guess that there's also an electric potential keeping the plasma from melting your hands.

As a source familier with the source... (1)

tetrahedrassface (675645) | more than 8 years ago | (#15040381)

'Wouldn't your average Jedi be horribly scarred by all of this"

Why Yes!! as a spokesperson for Jedi Inc.. (LLC) I can safely state that all Jedi completing our online (tm) courses since 5/12/97 have an exemplary track record. Most scars from lightsabers now result in the loss of limbs and/or other LEBOoETO (Life Enabling Biological Organs of ExtraTerrestrial Origin). We have strived hard to maintain safe Jedi Training Environment, and can now report that most Jedi are not only scarred, but scared as well!

When using one, don't forget safety! (2, Informative)

sirwired (27582) | more than 8 years ago | (#15040388)

Remember boys and girls, a lightsaber can be a dangerous weapon, and improperly used, it can hurt! Here are a few simple tips for Lightsaber Safety...

http://www.atomfilms.com/af/content/your_lightsabe r [atomfilms.com]

SirWired

delightful... (2, Funny)

c0dedude (587568) | more than 8 years ago | (#15040389)

I've always found that reading slashdot on april fools is a good reminder that there are better things to do than read slashdot on april fools.

Technical Information Regarding This.... (2, Funny)

morganix (885178) | more than 8 years ago | (#15040391)

There is a good webpage that has detailed information on this subject...

http://www.exn.ca/starwars/plasmasaber.cfm [www.exn.ca]

Paris (0)

Anonymous Coward | more than 8 years ago | (#15040397)

Paris Hilton says:

Thats Hot!

Does a lightsaber cut with heat? (1)

answerer (626307) | more than 8 years ago | (#15040400)

Most of the people seem to be assuming that you'd need heat to cut. Heat will melt something but you need pressure to cut. If a lightsaber was really just a forcefield a few molecules thick, you could generate a huge amount of pressure on the edge and potentially actually slide between the metal molecules and break the bonds. The breaking bonds would generate some heat but it shouldn't splatter everywhere. Naturally, the denser the metal, the harder it would be for the saber to slide between.

Plasma cutter (0)

Anonymous Coward | more than 8 years ago | (#15040406)

A plasma cutter makes short work of steel, copper, anything conductive and you can hold it your hand without gloves. A decent sized one chews through 3/4 inch steel plate like butter. Couple of inches a second. So it's not insane from that standpoint. Really the problem isn't heat, it's energy. Couple of thousand degrees and just about everything melts/vaporises. If you had a plasma knife that could cut a 1mm wide swath, then yes if it had enough energy behind it, it would cut through steel, flesh, bone, kevlar armor, etc without any trouble at all. Such a thing would pretty much be exactly like a light saber.

Pffft (0)

Anonymous Coward | more than 8 years ago | (#15040408)

I once grabbed my light saber at the wrong end.....

You've got it all wrong (4, Funny)

Robotech_Master (14247) | more than 8 years ago | (#15040409)

It's not the heat...it's the humidity.

how hot? (0)

Anonymous Coward | more than 8 years ago | (#15040410)

So hot.

Adamantium (0)

Anonymous Coward | more than 8 years ago | (#15040414)

Reminds me of an old Fark thread. Could a Light Saber cut through Adamantium? Discuss.

I was of the opinion ... (1)

constantnormal (512494) | more than 8 years ago | (#15040422)

... that the light saber worked by creating a localized field that suppressed the electromagnetic interaction [wikipedia.org] , with the glow being a result of leakage of released photons as the protons and electrons combine with a ginormous release of energy.

It isn't so much the steel/wood/flesh/whatever being "vaporized" as whatever matter is within the localized field.

The resulting release of energy would blow the wielder of the light saber into nothingness, except for a second localized field that collects the energy and feeds it back into the mechanism to power the interior suppression field. It is leakage through the outer field that provides the visible "glow".

But I suppose I could be wrong.

Sheilding (1)

bm17 (834529) | more than 8 years ago | (#15040424)

For what it's worth, the steel will only spark and smoke when it conbines with O2. I think we need to assume that the saber's containment field would protect the moten metal from oxidizing.

So, where are all these ponies I keep hearing about?

Dr. Brown says... (1)

cojsl (694820) | more than 8 years ago | (#15040426)

1.21 Jigga-Kelvins!

Not hot enough apparently (-1, Offtopic)

Anonymous Coward | more than 8 years ago | (#15040434)

to fucking wipe every living organism off this piece of shit spining ball of fucktard!

I hate you all!

OMG! I'm having a bay day!!!!!!!!!!!

Light Sabres do not generate heat (1)

manowarthegreat (884657) | more than 8 years ago | (#15040439)

As any true Star Wars fan would know, Light Sabers work by rapidly vibrating molecules to achieved the spectacular cutting effect and "wwrroggg" sounds.

It may come down to the physics (1)

Z00L00K (682162) | more than 8 years ago | (#15040441)

if the cutting is done by heat then you may also consider the effect a cutting torch is having on steel where the majority of the residue is actually falling out away from the user.

On the other hand - a lightsaber may involve a different kind of physics where the material is actually displaced by other force and the light is actually only a visual representation caused by the displacement field.

Whatever - you have to study the physics of the StarWars universe first to come out with a solution to the problem.

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