General Chat Thread, You probably all know this but... in General; ... I just did this in a classroom and the teacher thought it was magic.
If a piece of equipment ...
27th June 2011, 09:31 AM #1
You probably all know this but...
... I just did this in a classroom and the teacher thought it was magic.
If a piece of equipment isn't responding to the remote, point the remote into your camera lens and press a button. The camera sensor can see IR light.
2 Thanks to laserblazer:
eejit (27th June 2011), korova_blue (27th June 2011)
27th June 2011, 09:38 AM #2
Works great as a quick and dirty test of fibre connections as well.
Thanks to jamesb from:
AngryTechnician (27th June 2011)
27th June 2011, 09:39 AM #3
Works on my phone's camera! Thanks!
27th June 2011, 09:41 AM #4
It'll work on any digital camera - unlike us they're sensitive to infrared light, and show it as bright white on a display.
Actually we're sensitive to infrared/ultraviolet too, but the lens of our eyes screens them out.
27th June 2011, 09:45 AM #5
If you've any old digital cameras /webcams lying around that have been superseded, remove the IR filter and donate them + bottle of coke/opaque beverage to the physics dept as demo kit.
27th June 2011, 10:04 AM #6
- Rep Power
Very cool - did not know that.
27th June 2011, 11:23 AM #7
Go on you'll have to explain this.
Originally Posted by pete
27th June 2011, 11:52 AM #8
You can see / take pictures through the coke using modified camera + infrared light from the sun. Works for lots of things that are opaque until you can "see" in infrared.
Originally Posted by Pyroman
Logitech webcams (older ones) used to be very easy to mod. Old Fuji still cameras (horrible grey ancient things) work, but more fiddly.
27th June 2011, 11:53 AM #9
I think the camera will be able to see through the bottle of coke.
27th June 2011, 12:40 PM #10
Yes thats right but you need to be careful with that demo as if the camera CCD is able to detect and process NIR (near infra-redred light) then it can actually see through some cloths which can be a tad troublemaking in any environment let alone a school. You can also use this technique to see through spilled ink on paper which is quite cool.
Originally Posted by plexer
27th June 2011, 01:01 PM #11
Yeah, we assume the Physics Dept a) know how it works, b) are aware of the potential implications. As opposed to (say) the Art Dept who could also use it (IR Photography), but wouldn't necessarily be aware of the implications. YMMV.
Originally Posted by SYNACK
27th June 2011, 01:09 PM #12
Wait you have invented a camera that talks naked pictures of people wearing clothes!? We'll all be RICH, RICH I TELL YOU!
27th June 2011, 01:24 PM #13
Lmao i was just thinking the same thing! Does that really work then through clothes? Scary!
Originally Posted by somabc
27th June 2011, 01:25 PM #14
Here is a good site explaining it with a few examples and the hack to make a low end one with a webcam.
Make an Infra Red Camera - Naked Scientists Kitchen Science 2008
27th June 2011, 03:07 PM #15
yep it really works
Originally Posted by Pyroman
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