Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Beam of darkness makes objects invisible from a distance
Wired.co.UK ^ | December 16, 2013 | Olivia Solon

Posted on 12/16/2013 12:31:37 PM PST by listenhillary

A research team from the University of Singapore has developed a device that can make objects invisible by bathing them in a beam of darkness.

The system takes the conventional approach to optics -- which generally aims to make images as sharp and clear as possible -- and turns it completely on its head. Usually imaging systems focus light into a pattern known as a point spreading function, which consists of a spiked central region of high intensity (the main lobe) surrounded by a concentric region of lower intensity light and a higher intensity lobe after this. In order to achieve the best resolution, the central region should be narrowed and intensified, while the outer lobe is supressed. This makes sure that the image is very bright and sharp with well-defined edges.

The researchers' beam can hide macroscopic objects by taking the opposite approach: intensifying the outer lobes suppressing the central region. This means that the central region has a field intensity of light that is pretty much zero.

(Excerpt) Read more at wired.co.uk ...


TOPICS: Miscellaneous; Science; UFO's; Weird Stuff
KEYWORDS: stringtheory; xplanets
Obama asks his handlers if they can buy the patent.
1 posted on 12/16/2013 12:31:37 PM PST by listenhillary
[ Post Reply | Private Reply | View Replies]

To: listenhillary

Dark EVader


2 posted on 12/16/2013 12:34:20 PM PST by bunkerhill7 ("The Second Amendment has no limits on firepower"-NY State Senator Kathleen A. Marchione.")
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary
A research team from the University of Singapore has developed a device that can make objects invisible by bathing them in a beam of darkness.

Not much military use when the enemy has flashlights.........

3 posted on 12/16/2013 12:37:03 PM PST by Hot Tabasco (Miss Muffit suffered from arachnophobia.....)
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary

Sounds something like “nulling”. Astronomers have been using the technique for a long time.

“A nuller is a tool used to block out a strong source so that fainter signals near the source can be observed. An example of a nuller is being employed on the Keck Interferometer. This causes the light from a star to destructively interfere, effectively cancelling out the star’s image. The faint light from an orbiting ring of dust can then be detected. This project is part of a scientific effort to detect and observe nearby planets.”

http://en.wikipedia.org/wiki/Nuller


4 posted on 12/16/2013 12:38:40 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary

How coincidental.

Beam of darkness of untruths makes America invisible from Washington.


5 posted on 12/16/2013 12:41:37 PM PST by F15Eagle (1Jn4:15;5:4-5,11-13;Mt27:50-54;Mk15:33-34;Jn3:17-18,6:69,11:25,14:6,20:31;Ro10:8-11;1Tm2:5-6;Ti3:4-7)
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary

I would like my own cloaking device. Lot’s of Klingons and romulans around here.


6 posted on 12/16/2013 12:42:08 PM PST by showme_the_Glory (ILLEGAL: prohibited by law. ALIEN: Owing political allegiance to another country or government)
[ Post Reply | Private Reply | To 1 | View Replies]

To: showme_the_Glory

Gyro Gearloose already invented it. He called it the Gloom Light, to make light places dark.


7 posted on 12/16/2013 12:47:57 PM PST by JohnnyP
[ Post Reply | Private Reply | To 6 | View Replies]

To: listenhillary

Standard problem solving : Reverse the objective. If you want to make customers happy, think about how to really piss them off. But projecting darkness? That is too cool for school.


8 posted on 12/16/2013 12:55:18 PM PST by Vermont Lt (If you want to keep your dignity, you can keep it. Period........ Just kidding, you can't keep it.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary

will we someday be able to buy darkbulbs and flashdarks??


9 posted on 12/16/2013 12:56:42 PM PST by GeronL (Extra Large Cheesy Over-Stuffed Hobbit)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Darksheare
I... uh... *nevermind*
10 posted on 12/16/2013 12:59:01 PM PST by null and void (I'm betting on an Obama Trifecta: A Nobel Peace Prize, an Impeachment, AND a War Crimes Trial...)
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary

Does it come with a Cone of Silence?


11 posted on 12/16/2013 1:03:09 PM PST by oldbill
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary

Not necessary.

Most of Obama’s observers have their heads stuck in the sand or somewhere else, anyway.


12 posted on 12/16/2013 1:03:32 PM PST by 353FMG
[ Post Reply | Private Reply | To 1 | View Replies]

To: oldbill

What?


13 posted on 12/16/2013 1:05:11 PM PST by TalonDJ
[ Post Reply | Private Reply | To 11 | View Replies]

To: ETL

My hand is a “nuller” when I want to look at an item near the sunset.


14 posted on 12/16/2013 1:11:25 PM PST by cuban leaf
[ Post Reply | Private Reply | To 4 | View Replies]

To: GeronL

I want some darkbulbs for my flashdark, please, before they are phased out by environmentalist nutjobs.


15 posted on 12/16/2013 1:17:49 PM PST by OldNewYork (I have voted against free ice cream. And I will do it again.)
[ Post Reply | Private Reply | To 9 | View Replies]

To: OldNewYork

yep. They’ll get there eventually because of all the dark carbon


16 posted on 12/16/2013 1:19:49 PM PST by GeronL (Extra Large Cheesy Over-Stuffed Hobbit)
[ Post Reply | Private Reply | To 15 | View Replies]

To: showme_the_Glory

17 posted on 12/16/2013 1:21:43 PM PST by JPG (Yes We Can morphs into Make It Hurt.)
[ Post Reply | Private Reply | To 6 | View Replies]

To: listenhillary; Ellendra

So, someone has invented a “flashdark”?


18 posted on 12/16/2013 1:21:58 PM PST by knittnmom (Save the earth! It's the only planet with chocolate!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: null and void; NicknamedBob

Not My.. uh.. maybe this time it is.


19 posted on 12/16/2013 1:22:05 PM PST by Darksheare (Try my coffee, first one's free..... Even robots will kill for it!)
[ Post Reply | Private Reply | To 10 | View Replies]

To: cuban leaf

Lol. Think of the millions that could be saved if NASA employed your simple technique!

Nulling actually involves two separated telescopes working together as one. Each one gathers the light from a star in such a way that the 2 wavefronts are 180 degrees out of phase when combined and so thereby cancel each other out, making it possible to see the faint light of the planet or whatever that might be there.


20 posted on 12/16/2013 1:22:32 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
[ Post Reply | Private Reply | To 14 | View Replies]

To: listenhillary

Yes, it’s so awesome it can hide a 40-micrometer letter N completely from a particular frequency of red light!


21 posted on 12/16/2013 1:35:50 PM PST by The_Reader_David (And when they behead your own people in the wars which are to come, then you will know...)
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary
♪♫Ribbon of darkness over me
Since my true love walked out the door
Tears I never had before
Ribbon of darkness over me♫

Gordon Lightfoot - Ribbon Of Darkness Lyrics

22 posted on 12/16/2013 1:36:54 PM PST by DannyTN
[ Post Reply | Private Reply | To 1 | View Replies]

To: ETL

Interesting. Like is done with sound, but at a much more precise level. However, I think of sound as a wave, and light as energy.


23 posted on 12/16/2013 1:38:57 PM PST by cuban leaf
[ Post Reply | Private Reply | To 20 | View Replies]

To: DannyTN

As sung by Marty Robbins.

And Gordon Lightfoot.


24 posted on 12/16/2013 1:46:52 PM PST by IronJack
[ Post Reply | Private Reply | To 22 | View Replies]

To: listenhillary

Each night, when I flip the wall switch in my bedroom to the “off” position, the entire room is bathed in a “beam of darkness.”


25 posted on 12/16/2013 1:53:20 PM PST by GreenHornet
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary

Ah, it’s a cloaking device! Got it. I’ll take two.


26 posted on 12/16/2013 2:34:39 PM PST by MasterGunner01
[ Post Reply | Private Reply | To 1 | View Replies]

To: GeronL

How about a DASER?


27 posted on 12/16/2013 2:43:02 PM PST by wally_bert (There are no winners in a game of losers. I'm Tommy Joyce, welcome to the Oriental Lounge.)
[ Post Reply | Private Reply | To 9 | View Replies]

To: listenhillary

Faster Than The Speed of Dark.


28 posted on 12/16/2013 2:45:51 PM PST by Colonel_Flagg (Some people meet their heroes. I raised mine. Go Army.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary

Sweet!


29 posted on 12/16/2013 2:46:09 PM PST by RandallFlagg (IRS = Internal Revenge Service)
[ Post Reply | Private Reply | To 1 | View Replies]

To: wally_bert

wow, we could erase our enemies with a DASER


30 posted on 12/16/2013 2:47:47 PM PST by GeronL (Extra Large Cheesy Over-Stuffed Hobbit)
[ Post Reply | Private Reply | To 27 | View Replies]

To: listenhillary

cool! all we have to do is get the bad guys to wear these (whenever they come out)./sarc


31 posted on 12/16/2013 3:19:17 PM PST by camle (keep an open mind and someone will fill it full of something for you)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Colonel_Flagg

If ‘c’ represents the speed of light, what’s the symbol for the speed of Dark?

And is that the propagation rate of Dark Energy?


32 posted on 12/16/2013 4:19:51 PM PST by mikrofon (Dark Matter)
[ Post Reply | Private Reply | To 28 | View Replies]



33 posted on 12/16/2013 4:29:14 PM PST by mikrofon (Dark Matter)
[ Post Reply | Private Reply | To 32 | View Replies]

To: mikrofon

I like that. :)


34 posted on 12/16/2013 5:20:27 PM PST by Colonel_Flagg (Some people meet their heroes. I raised mine. Go Army.)
[ Post Reply | Private Reply | To 33 | View Replies]

To: KevinDavis; annie laurie; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; Mmogamer; ...
Thanks listenhillary.
 
X-Planets
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
Google news searches: exoplanet · exosolar · extrasolar ·

35 posted on 12/16/2013 6:15:17 PM PST by SunkenCiv (http://www.freerepublic.com/~mestamachine/)
[ Post Reply | Private Reply | View Replies]

To: 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; backwoods-engineer; ...
Thanks listenhillary.


· List topics · post a topic · subscribe · Google ·

36 posted on 12/16/2013 6:16:08 PM PST by SunkenCiv (http://www.freerepublic.com/~mestamachine/)
[ Post Reply | Private Reply | View Replies]

To: ETL

bm


37 posted on 12/16/2013 6:16:49 PM PST by bigheadfred
[ Post Reply | Private Reply | To 4 | View Replies]

To: GeronL; null and void
will we someday be able to buy darkbulbs and flashdarks

when you hit oil on your land or sumpim otherwise you can only vote for them

38 posted on 12/16/2013 6:19:20 PM PST by bigheadfred
[ Post Reply | Private Reply | To 9 | View Replies]

To: Darksheare; null and void; GeronL

I’m buying stock in manufacturers of Dark Emitting Diodes.


39 posted on 12/16/2013 7:40:44 PM PST by NicknamedBob (If you voted for 0bama to show that you're not a racist, you're a racist. -- NicknamedMike)
[ Post Reply | Private Reply | To 19 | View Replies]

To: NicknamedBob

DarkLight: because it makes the difference between night and dark


40 posted on 12/16/2013 7:44:19 PM PST by GeronL (Extra Large Cheesy Over-Stuffed Hobbit)
[ Post Reply | Private Reply | To 39 | View Replies]

To: NicknamedBob

By some weird coinky-dink, I’m working on light absorbing diodes...


41 posted on 12/16/2013 7:52:54 PM PST by null and void (I'm betting on an Obama Trifecta: A Nobel Peace Prize, an Impeachment, AND a War Crimes Trial...)
[ Post Reply | Private Reply | To 39 | View Replies]

To: NicknamedBob; null and void; GeronL

Bring out yer DED?


42 posted on 12/16/2013 7:56:16 PM PST by Darksheare (Try my coffee, first one's free..... Even robots will kill for it!)
[ Post Reply | Private Reply | To 39 | View Replies]

To: Darksheare; null and void; GeronL
"Bring out yer DED?"

Why do you think they call them Die-odes?

If you want something wonderful, look at some Gee-odes.

Do yourself a favor, though, and stay away from Poetical-odes.

43 posted on 12/16/2013 11:15:11 PM PST by NicknamedBob (If you voted for 0bama to show that you're not a racist, you're a racist. -- NicknamedMike)
[ Post Reply | Private Reply | To 42 | View Replies]

To: NicknamedBob; null and void; GeronL

Poetical-odes to someone named edda might get you sent on a Nordic odyssey.


44 posted on 12/16/2013 11:30:08 PM PST by Darksheare (Try my coffee, first one's free..... Even robots will kill for it!)
[ Post Reply | Private Reply | To 43 | View Replies]

To: bigheadfred
otherwise you can only vote for them

Ummm...

Those would be Dimbulbs... ;-)

45 posted on 12/16/2013 11:58:22 PM PST by NoCmpromiz (John 14:6 is a non-pluralistic comment.)
[ Post Reply | Private Reply | To 38 | View Replies]

To: listenhillary

And all this time I thought the only use for a DED (dark emitting diode) was as a power off indicator.


46 posted on 12/17/2013 12:03:51 AM PST by Nik Naym (It's not my fault... I have compulsive smartass disorder.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: listenhillary

No doubt the pirate Roberts on the subPreme Court will stamp a law called the Affordable Snare Act constitutional so long as it is implemented by little barry basatrd boy-king.


47 posted on 12/17/2013 5:27:03 AM PST by MHGinTN (Being deceived can be cured.)
[ Post Reply | Private Reply | To 1 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson