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Send Morse Code Over Stockholm By Laser

timothy posted more than 11 years ago | from the di-di-da-di-da-di-da-di-da-da-di dept.

Technology 139

bigmac writes "KTH, Royal Institute of technology is celebrating 175 year anniv by making a very spectacular laser show. A green laser sent from the bottom of an old reactor building 30 meters below ground. The beam is then reflected over the city from the schools clock tower. And yes, you can send your own laser-morse messages through their homepage!" Here's an image to chew on.

cancel ×

139 comments

Oh, right (1)

commonchaos (309500) | more than 11 years ago | (#4317640)

That looks real.

Re:Oh, right (1)

haroldK (96625) | more than 11 years ago | (#4317650)

Sure does. They must be using the green version of the Laser they used in Real Genius.

Re:Oh, right (3, Interesting)

djonsson (542920) | more than 11 years ago | (#4317705)

I attend this school; why do I have to read this on slashdot? Noone here knew. But then again, students don't seem to be invited to the 175 year anniversary.

Sad. (0)

slashuzer (580287) | more than 11 years ago | (#4317873)

That's just sad. Imagine something this cool happening in your school and not being invited to. Hey you, make sure you "gate-crash" anyway.

Although I imagine the "transmission" would be visible from your home too :)

Yes, it does (2, Informative)

G. W. Bush Junior (606245) | more than 11 years ago | (#4317708)

There's nothing to convince me that the picture's a fake.

I've seen green laser that were intense enough to been seen by the naked eye.. If you look at it from the correct angle with respect to the polarization, of course

Re:Yes, it does (1)

haroldK (96625) | more than 11 years ago | (#4317722)

Yes, as long as the light's refleting off something. There doesn't appear to be anything in the sky in that picture for all that light to be bouncing off. There may be some particles, but certainly not enough to make the beam look solid. Even if the beam were reflected off the clock face, the light has to strike something and be reflected towards your eye, you wouldn't just see a beam zipping across your line of sight.

Unless you're suggesting the laser is of sufficient power to ionize the surrounding air. I don't see that happening, either. Unfortunately, I can't find any details in a language I can read.

actually it doesn't need ionization or particles.. (3, Informative)

G. W. Bush Junior (606245) | more than 11 years ago | (#4317853)

Actually it doesn't have to have sufficient power to ionize the surrounding air. Lasers are (if they're powerful enough) able to cause dipole radiation, without ionizing any molecules.

the dipole oscillations are oriented with respect to the polarization of the light, so this light is most intense if you see it from an angle perpendicular to the polarization.


It's true that weak lasers has to reflect of particles, but I'm sure that this laser is powerful enough to cause dipole radiation... (maybe the reason why the didn't just move the laser from the basement it's placed in)

Re:actually it doesn't need ionization or particle (1)

haroldK (96625) | more than 11 years ago | (#4317870)

Oh sure, remind me of the things I've forgotten about, why don't you? Ugh, I deffinately need to revisit my physics book.

Re:Yes, it does (3, Interesting)

Max von H. (19283) | more than 11 years ago | (#4317925)

I used to spend my summers nearby an observatory in the South of France, and they were using a pretty damn visible laser to measure Earth-Moon distance (I think). At night, a similar beam than in the article photo could be visible (can't remember the colour of it though), and that was 20 years ago.

Pretty impressive thing to see when you're a kid in the middle of nowhere in the early 1980's.

Cheers,
max

Re:Oh, right (1)

uberstool (470348) | more than 11 years ago | (#4317740)

It's a real photo, they just used a long exposure.

Re:Oh, right (2)

xanadu-xtroot.com (450073) | more than 11 years ago | (#4317762)

Oh, right, That looks real.

Ummm... you are not smart.

I remember when Pink Floyd [pinkfloyd.com] came here (Philly, USA) in '92 (or '91, I forget when The Division Bell [amazon.com] came out, I still have the shirt somewhere I think...), PHL [phl.org] had to redirect air traffic that night during the show because of the green lasers that they were using in the show. DAMN FANTASTIC SHOW, BTW, but the point is: yes, Green Lasers (especially) can be that visable and that vibrant.

Please look into things a bit before you post. Thank you.

Re:Oh, right (1, Informative)

commonchaos (309500) | more than 11 years ago | (#4317788)

I stand corrected, that was a knee jerk reaction. I was raised on "nah you stewpid kid, them lazeers you see on Starr Wars ain't real, you cant see lazeers you idjet". A quick google confirms your hubris. Heh.

for the sake of completeness (1)

G. W. Bush Junior (606245) | more than 11 years ago | (#4317865)

Just for the sake of completeness... star wars is still wrong, in empty space lasers beams are invisible

Re:for the sake of completeness (-1)

Anonymous Coward | more than 11 years ago | (#4317898)

and they don't make noises, eventhough it's alot cooler

Lord Helmet (1, Funny)

operagost (62405) | more than 11 years ago | (#4318272)

I see your Schwartz is as big as mine ... let's see how you use it!

Google (1)

leadfoot (159248) | more than 11 years ago | (#4317645)

Can google enterpret Morse code?

Re:Google (3, Funny)

Bald Wookie (18771) | more than 11 years ago | (#4317661)

Can google enterpret Morse code?

Searched the web for "dot dot dot dash dash dash dot dot dot". Results 1 - 10 of about 164. Search took 0.46 seconds

Yes.

i found this... (4, Informative)

irma trattino (607191) | more than 11 years ago | (#4317704)

during my daily surf, two month ago, i found this [urban75.com] to make my own morse code. have fun! =)

Thanks :) (-1, Offtopic)

slashuzer (580287) | more than 11 years ago | (#4317891)

Thank you for that link! Somebody mod this fella up!

I wanted to post this in MC but couldn't get past the very lame lameness filter.

Dude! (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4317647)

Can we call batman with it?

Silly people (0, Redundant)

LinuxGeek (6139) | more than 11 years ago | (#4317651)

It is for calling The Green Hornet and Kato!

Re:Silly people (1)

Ledora (611009) | more than 11 years ago | (#4317700)

Kato... wasn't he the guy who lived with OJ?

Re:Silly people (0)

Anonymous Coward | more than 11 years ago | (#4317723)

No, that's NATO, the North Atlantic Treaty Organisation.

Re:Silly people (0)

Anonymous Coward | more than 11 years ago | (#4317733)

Yeah, and sweinbirds

Send my own message, eh? (1, Informative)

Twintop (579924) | more than 11 years ago | (#4317649)

'All your base are belong to us.'

Re:Send my own message, eh? (0)

Anonymous Coward | more than 11 years ago | (#4317673)

how about "SOS Server slashdoted" ?

Re:Send my own message, eh? (0)

Anonymous Coward | more than 11 years ago | (#4317718)

How are you gentlemen??

Re:Send my own message, eh? (0)

Anonymous Coward | more than 11 years ago | (#4317745)

That would be a VERY bad idea. Bush would probably declare Stockholm part of the axis of evil.

Re:Send my own message, eh? (0, Offtopic)

tewmten (608383) | more than 11 years ago | (#4318028)

hehe, I'm gonna send "All your base are belong to us!" from: Cats hehehe, so original ;D

WoW! (2)

Newer Guy (520108) | more than 11 years ago | (#4317653)

Pretty impressive. I'm green with envy! PS: What's a lameness filter and why won't it let me list morse code?

Re:WoW! (0, Offtopic)

gl4ss (559668) | more than 11 years ago | (#4318047)

lameness filter is there to annoy you when you try to paste some relevant things or express something somebody doing a lame filter didnt..

anyways, that sure looks cool, i wonder how far it can be seen.

hmm (2, Interesting)

hatchet (528688) | more than 11 years ago | (#4317658)

If I don't understand swedish, I won't understand swedish morse code. Does any translator know swedish?

Re:hmm (3, Funny)

xanadu-xtroot.com (450073) | more than 11 years ago | (#4317794)

Does any translator know swedish?

Yup, not a problem [rinkworks.com]

Iff I dun't understund svedeesh, I vun't understund svedeesh murse-a cude-a. Dues uny trunsletur knoo svedeesh?

Slashdot Janitors (-1, Flamebait)

Anonymous Coward | more than 11 years ago | (#4317659)

... Here's an image to chew on. [204.191.62.73]
Timothy we know you're an out-of-the-closet faggot, but must you push your gay agenda in such a heinous manner?

yeah, but... (4, Funny)

majestynine (605494) | more than 11 years ago | (#4317660)

I wonder if echelon will be monitoring these transmissions... because we all know this is what the terrorists of the future will be using..

.ioi,sdisid alalal kik me in teh butt (-1, Flamebait)

Anonymous Coward | more than 11 years ago | (#4317662)

who CARES! stockholm is FOREIGN! it's not in the united states of ownage(america)! get this garbage off slashdot!(american site) it doesn't belong here! just like cmdrtaco doesn't belong in a heterosexual bar!! lolol lawlelwael saksuxdix

yeah but, (0)

Anonymous Coward | more than 11 years ago | (#4317663)

Can we call Batman with it?

Re:yeah but, (-1, Offtopic)

Lisias (447563) | more than 11 years ago | (#4317918)

Nope.

But I'm pretty sure Green Lantern will answer us.

8-)

I code java applets in morse code (0)

Anonymous Coward | more than 11 years ago | (#4317665)

Hey, I code java applets in morse code, so BACK OFF, mang!

HEY MANG, WEED HELPS WHEN YOU'RE CODING SLOW JAVA (0)

Anonymous Coward | more than 11 years ago | (#4317681)

Hey watch it (0)

Anonymous Coward | more than 11 years ago | (#4317667)

Ouch, my freaking eyes

the omen (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4317668)


When the Jews return to Zion
And a comet fills the sky
And the Holy Roman Empire rises,
Then you and I must die.

From the eternal sea he rises,
Creating armies on either shore,
Turning man against his brother
'Til man exists no more.
-- Father Brennan

Reminds me of "blinkenlights"... (4, Interesting)

evbergen (31483) | more than 11 years ago | (#4317669)

... that was up on slashdot a while ago. It allowed you to send messages that scrolled by on a 18x8 screen made of lamps in office rooms and play Pong on your GSM (see http://www.blinkenlights.de/).

It's not even that original, considering the fact that (at least here in NL) a lot of clip stations are continuously scrolling by SMS messages from random people. Everyone his 5 seconds of fame. Hmm.

The laser would be a fun way to ask a geeky other half to marry though.

Airplane hazard (5, Funny)

po_boy (69692) | more than 11 years ago | (#4317675)

Remind me not peer out the window next time I fly into Stickholm.

ehm... something else on the site (3, Interesting)

hummer357 (545850) | more than 11 years ago | (#4317676)

Anyone notice on the site that the university is giving a doctorat (honoris causa) to Bill Gates?

Nice one, Stockholm!

Re:ehm... something else on the site (0)

Anonymous Coward | more than 11 years ago | (#4317689)

Yeah. As if that wasn't bad enough they've given some guy named Linus Torvalds the same treatment :)

Re:ehm... something else on the site (-1, Flamebait)

Anonymous Coward | more than 11 years ago | (#4317690)

In case you didn't the swedes are all gay.

Re:ehm... something else on the site (0, Offtopic)

Anonymous Coward | more than 11 years ago | (#4317913)

Nope, they have a higher percentage of heterosexuals. But in case you meant gay as in cheerful you ought to see any of Ingmar Bergman's movies.

Re:ehm... something else on the site (0, Offtopic)

fredrik70 (161208) | more than 11 years ago | (#4317914)

nah, we're just open-minded! ;-)
remember, beggars can't be choosers...

Re:ehm... something else on the site (4, Informative)

Lars Arvestad (5049) | more than 11 years ago | (#4317697)

Yup, a lot of people (well hackers rather) were awkward about that. The school has a tradition of giving honorary doctorates to successful entrepeneurs (i.e., people with lots of money).

Please notice however, that Richard M. Stallman was given an honorary doctorate at KTH already in 1996!

Re:ehm... something else on the site (0)

Anonymous Coward | more than 11 years ago | (#4317743)

ITYM 1986

Re:ehm... something else on the site (1)

Lars Arvestad (5049) | more than 11 years ago | (#4317845)

Nope, not at KTH. Google (try 'Stallman hedersdoktor') says 1996, and that correlates well with my memory.

Re:ehm... something else on the site (0)

Anonymous Coward | more than 11 years ago | (#4317699)

It already has, 1 or 2 years ago in fact.

Re:ehm... something else on the site (3, Funny)

jazdc (217401) | more than 11 years ago | (#4317856)

First some background:
Students at technical universities in Sweden generally own overalls in the colour of their student union section (a section usually roughly corresponds to one educational programme). These are worn at various parties. The students also design "patches" with their section or school logo, the "logo" of some big party or just a funny cartoon and sew these on their overalls.

When Bill Gates received his doctorate, the IT section at KTH started distributing a patch with a picture of Gates wearing a doctor's hat and with the text "You pay - you get".

It was immensely popular. I own two. =)

Re:ehm... something else on the site (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4317990)

Generally? You mean the utter dorks.

Re:ehm... something else on the site (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4318123)

hahahaha

fan va bra :)

How to send your message through that www -page. (5, Informative)

DrunkenPenguin (553473) | more than 11 years ago | (#4317679)

Click on "Ljus Telegraph" to send your own message. Ditt meddelande = Your message. Avsändare = Message sender. That's it. Quite simple.

WHAT IF I CLICK ON DJIRTTY GNU HJIPPIE? (-1, Troll)

Anonymous Coward | more than 11 years ago | (#4317685)

Re:How to send your message through that www -page (3, Funny)

jsse (254124) | more than 11 years ago | (#4317852)

Thanks for the instruction. Now how may I send a huge bat to the sky with this? We got some problem here in Gothem...

This may be of help (5, Informative)

Adam9 (93947) | more than 11 years ago | (#4317680)

You can get an English translation here [r1.kth.se] . Sorry, Babelfish doesn't have Swedish yet ;)

Re:This may be of help (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4317792)

Yeah, but Google does Swedish Chef - that's close: Google - Bork Bork Bork [google.com]

Re:This may be of help (0, Offtopic)

Xenographic (557057) | more than 11 years ago | (#4317934)

Actually, they do. Unfortunately, it only works if you happen to be a sweedish chef... :]

Bork!

mmmmm morsecode (5, Funny)

Hunden (516276) | more than 11 years ago | (#4317692)

After learning morsecode in the Navy, four of my friends and I had a lesson in how to behave in front of women. Beer had caused an unusually deep load displacement, and we sat in a train compartment and morsed whatever dirty words or sentences we could come up with.

Five drunken sailors and a young attractive(at least she seamed so, at that time) girl, gave us five hours of fun morsetraining. At her stop I found it appropriate to excuse for our childish behaviour - She replied that she had enjoyed our show, and as an old girl scout she had brushed up her morse code.

Sending morsecode in trains have never been the same after that:) .... ..- -. -.. . -.

dept (0)

Anonymous Coward | more than 11 years ago | (#4317693)

Shouldn't this be from the "no-life-geeks-with-way-too-much-free-time" dept.?

who needs that (-1, Troll)

Anti_zeitgeist (583666) | more than 11 years ago | (#4317713)

you can use this [slashdot.org] . open and close the ass for dots and dashes.

"Here's an image to chew on. " (2)

bogie (31020) | more than 11 years ago | (#4317724)

Looks like the MCP from Tron drank some green beer. :-)

Tron Comment (0)

Anonymous Coward | more than 11 years ago | (#4317777)

After looking at that pic, I just KNEW someone would be thinking what I was thinking: "Cool I/O Tower!"

the problem with Jews (-1, Flamebait)

Anonymous Coward | more than 11 years ago | (#4317727)

The Jews are the ones who pushed for never ending copyright. Jews are parasites who make their shekels by non-productive means of manipulating the laws and politicians to favor their schemes. Perpetual copyright was completely counter to the founders' intent. It matters not to the Jews. [206.244.69.51] Their loyalty lies outside of our country.

Diplomatic Message (2, Funny)

Jaguar777 (189036) | more than 11 years ago | (#4317731)

I think I will send this in hopes aliens from a distant planet just happen to pick up the laser.

"All your base are belong to us"

Well I did go to the trouble of typing my mesage out in morse code, but I have too many 'junk' characters to submit the post :( You mean to tell me slashcode can't recognize morse code???

emm.. (1)

hatchet (528688) | more than 11 years ago | (#4317742)

What about this? [dashdot.org]

Now this is fitness for cats! (1)

MacroRex (548024) | more than 11 years ago | (#4317749)

I bet you could really excercise your cat [washington.edu] with that one, and do it over the internet, too!

Quick translation from Swedish (5, Informative)

adadun (267785) | more than 11 years ago | (#4317750)

"Stockholm by night"

In a symbolic meeting between academia and the rest of the world, Stockholm's night sky will be adorned by a beam of light. A beam that has its origins in history, is part of our time and endeavours towards the future. A beam reflecting the advancements of technology and enterprise. A curious beam.

From a point 30 meters below the face of the earth, where once Sweden's first nuclear reactor was, a laser beam is produces and is reflected by the tower where pioneers once sent the first TV signals across Sweden. From here, the light is further projected over the city before reaching its goal: the City Hall.

Re:Quick translation from Swedish (4, Insightful)

adadun (267785) | more than 11 years ago | (#4317756)

Ooops, sorry the headline should say "Stockholm by light". I really missed that pun :-)

Re:Quick translation from Swedish (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4317940)

Maybe it should say "I'm a karmawhore"?

Re:Quick translation from Swedish (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4318148)

and a good one at that

Warning (5, Funny)

NewtonsLaw (409638) | more than 11 years ago | (#4317758)

Warning: Do not look directly at laser with remaining good eye.

truth stranger than fiction (5, Funny)

Lepruhkawn (199083) | more than 11 years ago | (#4317759)

Some joyriding alien passing by Sol is going to pick up "All your base are belong to us" sent by some trite geek and thus begins the first interstellar war.

Re:truth stranger than fiction (3, Funny)

Saxerman (253676) | more than 11 years ago | (#4317884)

Some joyriding alien passing by Sol is going to pick up "All your base are belong to us" sent by some trite geek and thus begins the first interstellar war.

Yeah. Those Vogans are so sensative. Actually, doesn't AYBABTU translate into, "Build a Hyperspace Bypass" in Vogan?

Re:truth stranger than fiction (0, Offtopic)

hashinclude (192717) | more than 11 years ago | (#4317958)

nope. they won't.

Aliens don't even understand Morse. Remember Independance Day?

Look for "CQ de VK5CQ K" over Stockholm (0)

Anonymous Coward | more than 11 years ago | (#4317760)

Just sent it...

Vegas had something similar... (0)

Anonymous Coward | more than 11 years ago | (#4317779)

...beaming over the city from the Hilton (not the Flamingo Hilton on the strip)I think. Then one day a pilot was momentarily blinded by the light and the show was soon over.

"Here's an image to chew on." (1)

Pathos78 (398591) | more than 11 years ago | (#4317781)

That image is... striking.

This isn't for morse code, this is for playing Missle Command writ large!

Re:"Here's an image to chew on." (1)

los_muffins (611022) | more than 11 years ago | (#4317867)

The Zürich university sported a similar bright green beam shooting across the night sky last spring. My friends and I stopped in the street to look at it and were arguing what it could be. Then this guy turned to us and said, while drawing quotes in the air with his fingers:

'It's a giant "l a s e r".'

And all this time I thought it was the "Alan Parson's Project"!!

Oh no not again! (1, Funny)

MikeDX (560598) | more than 11 years ago | (#4317790)

Looks like obi-wan left his lightsaber on again. :)

My message would be ... (4, Interesting)

Skapare (16644) | more than 11 years ago | (#4317805)

My message would be the source code to DeCSS, compressed, and alpha-encoded.

You just violated Rule834.32 sub 11 (0, Offtopic)

bokketies (584972) | more than 11 years ago | (#4317858)

Here I am, a friendly alien called Zonub12, on my way to a vacation on peaceful rytttbl in the andromeda system. Suddenly a laser blast penetrates my ISO certified force shield. It's time you humans grow up.

That looks better than WTC lights... (0)

cheekyboy (598084) | more than 11 years ago | (#4317859)

Might better than those dim WTC lights they had, why didnt they just get the same amount of powered laser instead of 5% flood lights.

Green wireless networking? (2)

prockcore (543967) | more than 11 years ago | (#4317908)

Could this be considered Green wireless networking [slashdot.org] ?

Check out all photos (3, Informative)

Anonymous Coward | more than 11 years ago | (#4317917)

Check out all the other photos from the event here [cineactive.com] .

Re:Check out all photos (1, Offtopic)

Theodore Logan (139352) | more than 11 years ago | (#4317935)

Hmm. Where have I seen that [cineactive.com] picture before [weertman.com] ?

Rockne Krebs and the Green Hypotenuse (1983) (2)

RobertFisher (21116) | more than 11 years ago | (#4317973)

This was very neat, although the concept is by no means new. An artist named Rockne Krebs has been using lasers since the late 1960s to execute new forms of art. Perhaps his most famous art piece was "Green Hypotenuse" (1983) : a massive laser show which beamed an argon laser from the Mt. Wilson Observatory in Pasadena to the wall of the Beckmann Auditorium on the Caltech campus over 7 miles away.

The photograph [armoryarts.org] on a webpage describing the art looks remarkably like the Swedish project. From the webpage :

Rockne Krebs was born in Kansas City, Missouri. In 1961 he received a B.F.A. in sculpture from the University of Kansas. Though not a painter, his fascination with ideas of color, along with his passion for sculpture, spawned a desire to create a sculptural work entirely made of light and color. Eventually this led to his development of "laser sculpture." In 1967 Krebs obtained his first simple HeNe (helium-neon) laser and created the piece Sculpture Minus Object. In 1969 he was sponsored by the Los Angeles County Museum of Art to work with Hewlett-Packard. They collaborated on a design for a piece that Krebs presented in the 1970 World's Fair in Osaka, Japan. This piece featured the first ever laser beam switching system and the prototype of the first laser light show. In 1983, Krebs connected the over 5,000-foot Mt. Wilson to the wall of Caltech's Beckman Auditorium over 7 miles away using light from a single argon laser. He allowed the laser beam to spread so by the time it reached the white exterior of the auditorium it was a constantly changing "painting" of green light. For The Universe: Contemporary Art and the Cosmos Krebs is creating a new piece using lasers and mirrors to connect the Armory building with the park across the street. He is also represented by two drawings, a medium he has explored in depth since the early 1970s.

I wonder... (0, Offtopic)

Edward Teach (11577) | more than 11 years ago | (#4318060)

how many Star Wars fanatics woke up and headed for the hills thinking the empire had installed a turbo laser turret.

It's not directed upwards... (2, Informative)

janap (451953) | more than 11 years ago | (#4318127)

The distance from source to target is around three miles, give or take. The beam is horizontal [cineactive.com] , some 50+ meters above ground.

In what way is this news? (0)

Anonymous Coward | more than 11 years ago | (#4318146)

Morse code has been sent using pulses of light already. Why is it suddenly a new idea when we use lasers?

Shark cage? (1, Offtopic)

carlcmc (322350) | more than 11 years ago | (#4318163)

Tell me, is that green laser mounted on the head of a shark in a shark cage???????

This reminds me of something else (0, Offtopic)

SlugLord (130081) | more than 11 years ago | (#4318172)

To the Batmobile!!

CHA (2, Funny)

jfunk (33224) | more than 11 years ago | (#4318198)

After looking at that picture I started wondering if the moon will have "CHA" on it tonight.

Where's the wecam... (0)

keller (267973) | more than 11 years ago | (#4318205)

...so I can be sure that my message gets through?

Re:Where's the wecam... Cont'd (0)

keller (267973) | more than 11 years ago | (#4318217)

And BTW I did read the article, but the streaming server is /.ed, therefore I need the webcam!

Message I sent... (1)

Lethyos (408045) | more than 11 years ago | (#4318257)

"Do not hump the laser."
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