Weapons
Update: Oops, the MEDUSA Mind Control Ray Gun Will Actually Kill You
Posted by Jack Loftus at 12:00 AM on July 27, 2008
The MEDUSA crowd control ray gun we reported on earlier this month sounded like some pretty amazing--and downright scary--technology. Using the microwave auditory effect, the beam, in theory, would have put sounds and voice-like noises in your head, thereby driving you away from the area. Crowd control via voices in your head. Sounds cool. However, it turns out that the beam would actually kill you before any of that happy stuff started taking place, most likely by frying or cooking your brain inside your skull. Can you imagine if this thing made it out into the field? Awkward!
"Any kind of exposure you could give to someone that wouldn't burn them to a crisp would produce a sound too weak to have any effect," said Kenneth Foster, a bioengineering professor at the University of Pennsylvania. Foster knows what he's talking about, too. In 1974 he published the first research on the microwave auditory effect.
Fellow scientist and microwave research author Bill Guy agrees, citing some hard facts to support his conclusions:
Guy says that experiments have demonstrated that radiation at 40 microjoules per pulse per square centimetre produces sound at zero decibels, which is just barely in hearing range. To produce sound at 60 decibels, or the sound of normal conversation, requires 40 watts per square centimetre of radiation. "That would kill you pretty fast," Guy says. Producing an unpleasant sound, at about 120 decibels, would take 40 million W/cm2 of energy. One milliwatt per square centimeter is considered to be the safety threshold.
Both scientists were in agreement about one other thing too: the MEDUSA just morphed from a crowd-control device into a monstrous weapon. We need more of those, right? [IEEE Spectrum Online]

Comments (AU Comments · US Comments)
There are currently no AU comments for this post.
chrisaroz
Posted 2:35 AM 27/7/08
Wait, wait, wait...
You're telling me, that when you shoot a microwave weapon into a crowd it cooks their brains instead of putting voices in their heads? I probably could have saved you guys a few million dollars of reasearch if you would have just asked what would happen.
chrisaroz
tehdahl
Posted 2:27 AM 27/7/08
@The_Gas_Man:
that's correct.
I believe there is also a "light boil" mode as well.
Awkward I don't believe is the word for it.
Tremendously stupendous, or downright horrifying might better terms for both sides of the coin.
tehdahl
jkr2
Posted 2:21 AM 27/7/08
so, the Medusa scientists aren't very adept in their field. Making claims w/o actually going through the basic numbers. Are these guy's even scientists?
jkr2
sqeakytoy of the apocalypse
Posted 2:17 AM 27/7/08
So this would still actualy make for effective crowd control if they could get the voices to say "please disperse now or we're going to serve your up brain like a plate of fish and chips." Think of it as kind of like the caution tape, only in your head. Like the rest of life, if you start hearing voices in your head, perhaps it's time to take a step back and re-evaluate the situation...
sqeakytoy of the apocalypse
snakepliskin
Posted 2:00 AM 27/7/08
Is there anyway to redirect it into a single concentrated death beam? Like a death ray sniper rifle. They would never see it coming their heads would just explode...
snakepliskin
The_Gas_Man
Posted 1:52 AM 27/7/08
"most likely by frying or cooking your brain"
Frying or cooking, eh?
The_Gas_Man
Hvedhrungr
Posted 1:51 AM 27/7/08
Classic example of theoreticians thinking something up without consulting with a more practically inclined scientist. It took pharmacologists about 50 years to see the error of their ways (most of them, anyway), the physicists can't be too far behind... that is, unless they kill us all first.
Hvedhrungr
mhlaxp
Posted 1:38 AM 27/7/08
I had the same problems with my mind control device. It just killed the test subjects before the mind control started to take place.
Of course, it was just an old Mosin-Nagant that I painted red and wrote "Mind Control Device" on the side.
mhlaxp
mcdj
Posted 1:28 AM 27/7/08
umm how exactly did they determine it fries your brain? anyone missing a relative?
mcdj
mathlabs
Posted 1:15 AM 27/7/08
lol you spelled Touche TUSHAY
mathlabs
chaz9205
Posted 1:01 AM 27/7/08
@dlomax tushay my friend, tushay indeed.
chaz9205
cafenitro
Posted 12:56 AM 27/7/08
The volunteers and reporters subjected to this raygun over and over again for our entertainment pleasure are all going to die. Bye Bye Bob Pizzi! Time to call Sokolov and Sokolov.
cafenitro
TBM-Fan
Posted 12:50 AM 27/7/08
The operators must use protection cause any echo that can be bounced back at them
uhmm i rather see that the persons were turned into stone cause that gives medusa more power
TBM-Fan
dlomax
Posted 12:41 AM 27/7/08
@chaz9205: Does it count as deaf if you're dead?
dlomax
chaz9205
Posted 12:26 AM 27/7/08
do you still die if your deaf? :-D
chaz9205
Ariel_Wollinger
Posted 12:21 AM 27/7/08
@WD40: put that on top of a fricking shark's head
Ariel_Wollinger
Emiat
Posted 12:20 AM 27/7/08
The brain killing mode is only the secondary fire mode.
Emiat
strider_mt2k
Posted 12:16 AM 27/7/08
Not a death ray or an ice beam.
(That's so Johnny Snow.)
strider_mt2k
Hanzo
Posted 12:12 AM 27/7/08
Wow, what a couple of wet blankets. They completely ruined *that* surprise.
Hanzo
WD40
Posted 12:10 AM 27/7/08
Dr Evil would approve this...
WD40
itchytooth
Posted 12:09 AM 27/7/08
Yeah, we're just working on this crowd device...oh, it kills people, really?...I guess we'll just go with that then.
itchytooth
Redwraithvienna
Posted 12:06 AM 27/7/08
Seems the deathray was invented at last
Redwraithvienna
Git Em SteveDave is a poor substitute for LindsayJoy
Posted 12:06 AM 27/7/08
We need to get Chris Knight on this whole laser thing.
Git Em SteveDave is a poor substitute for LindsayJoy
Hvedhrungr
Posted 2:51 AM 27/7/08
@sharnaff: If they use that in their presentation for the US Military (and other handpicked investors and possible consumers), you should sue for copyright infringement.
Hvedhrungr
sharnaff
Posted 2:43 AM 27/7/08
Our new RonCo MEDUSA(tm) fun ray comes with 3 different ways to impress your new friends and family!
Pesky children stealing from the cookie jar? No problem. Hit them with cartoon mode, and watch as their face turns red and steam shoots out their ears. A hilarious deterrent!
Home intrusion becoming a problem? Turn that liability into an asset with our "Lost Ark" mode and watch their faces melt! Burglary has never been so entertaining!
Insurgent forces got you down? Just crank it up to "Ghost Rider" mode and you've got a flaming skull right out out of a comic book. (Voice of Allah not included)
sharnaff
Optimus-Prime
Posted 2:41 AM 27/7/08
See, this was my problem with the microwave weapon in Batman Begins. Microwaves that evaporate water in all surrounding pipes would do a number of your body considering it is between 60% and 70% water.
Optimus-Prime
Evil J
Posted 3:09 AM 27/7/08
Maybe it's me, but I totally see this as a brilliant step to avoid possible moral questions raised by implanting thoughts/voices/whatever into a living being's mind.
Because, you know, we're generally more concerned with abstract questions like that than just blowing each other up in horrifying new ways.
That said... I like it as a brutally effective warfare weapon. It provides a "nice" way to kill the enemy and leave the infrastructure in place... something that only biological weapons could do before.
Evil J
iCanhasLs2plz
Posted 3:47 AM 27/7/08
@mathlabs: lol douche'
iCanhasLs2plz
FrankenPC
Posted 3:39 AM 27/7/08
Can you turn this baby into a portable hand gun? I'm thinking I want to microwave popcorn from 500' away.
FrankenPC
Neverkilled: Robot Jones, mechanical tyranical
Posted 4:09 AM 27/7/08
I'm pretty sure that companys creating weapons like this think and create way worse weapons.
Some of it just seems to be selectivly told to people.
Neverkilled: Robot Jones, mechanical tyranical
Hiphopopotamus
Posted 4:26 AM 27/7/08
I am still OK with this being used on hippie protesters...
Hiphopopotamus
logruszed
Posted 4:21 AM 27/7/08
Finally I have a reason to wear one of these:
logruszed
alpacalypse
Posted 5:05 AM 27/7/08
@Hiphopopotamus: I hate to sound like a dick, since you'll certainly respond that you were "just joking," but honestly, this is a pretty serious situation. The fact that people come this close to introducing deadly weapons as crowd control devices is serious. And face it, there are plenty of people other than "hippie protesters" right now that have a good reason to go out and demonstrate.
Given our current government's unpopularity, its general disdain for free speech, and its lack of hesitation to use torture and extraordinary rendition, we should hardly be chuckling when we hear that they're considering microwave emitters for "crowd control."
alpacalypse
DeadWriter
Posted 5:40 AM 27/7/08
@Hiphopopotamus: Dude, have you smelled burnt hippie?
DeadWriter
BiZarRroBALlmeR
Posted 6:50 AM 27/7/08
There's more than enough Hooligans this can be perfected on. Remember, trial and error.
(Will it reheat fish an chips prior to ones head boiling?)
BiZarRroBALlmeR
undeadmachine
Posted 7:38 AM 27/7/08
@AtomicPlayboy: this could end up being the cause of a zombie apocalypse if they could figure out how to tune it in 'properly'.
undeadmachine
AtomicPlayboy
Posted 7:23 AM 27/7/08
So they've invented a ray that cooks brains inside skulls at a distance. Am I the only one who will sleep a little better tonight knowing that we are now adequately prepared for the coming zombie apocalypse?
AtomicPlayboy
Noobs-R-Us
Posted 8:43 AM 27/7/08
-snif- You smell bacon?
Noobs-R-Us
Pablos102030
Posted 10:33 AM 27/7/08
@The_Gas_Man: What about baking your brain... COOKIES?!
Pablos102030
Kilotonne
Posted 2:28 PM 27/7/08
This is your brain on X-band, kids!
Kilotonne
GrimaceXL
Posted 3:25 PM 27/7/08
I'm hoping to take this design and make it more effective by using it to rickroll people on the battlefield.
GrimaceXL
CherylTurkey
Posted 6:13 AM 27/7/08
I, for one, wholeheartedly endorse development of this device! This will be awesome for encouraging politicians towards effective action! It's the old carrot (you live) vs. stick (we 'splodes your head!). Plus, since it's all electronic wired it up in a reality show/real-time democracy/video game link! Instant opinion polling with indisuputable results! And group-think/anonymity removes any problems with any pesky conscience-stricken humans. Fantasti ... Bzzz! ... Uhhhh... <*Pop!*>
CherylTurkey
anand7
Posted 7:08 AM 30/7/08
Spaceman Spiff sets the Mertilyzer to "deep fat fry"
anand7