Cool TV experement!

Someone Electro

New Member

• Nov 26, 2003

• #1

I pushd a button on my tv remote while facing it in my web-cam.

You can see it flashing

At some remotes if you look at the IR LED wean pushing a button you may see a red spot flashing(in the dark uf course)


PS:
I one time wean i was trying to film a static spark i allmoust blu out my web cam! :? (thank godnes)

 

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C

crust

Member

• Nov 26, 2003

• #2

This is because unlike our eyes, your webcam sensor (probably cmos) is sensitive to IR wavelengths.

 

Someone Electro

New Member

• Nov 26, 2003

• #3

You dont need to tell me that some cameras detect IR!

 

windozeuser

Member

• Nov 26, 2003

• #4

Sweet!

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Nov 26, 2003

• #5

This has been a standard way of checking IR remotes for years in TV shops - simply point at a CCTV camera and look at the monitor screen.

 

captainkirksdog

Member

• Nov 26, 2003

• #6

Back in the late 70's when I was still in the service, we used several remotes together to make what we called, "a poor man's night-vision scope". It was brand-new stuff then, but still it was cheaper than the military versions. Just use a high-power remote like a flashlight while peeking through the camera eyepiece. It won't work with all camcorders, so play around with it. On a dark night, very little is more fun than sneaking up on your girlfriend's cat...

 

S

Sceptre

New Member

• Nov 27, 2003

• #7

captainkirksdog said:

On a dark night, very little is more fun than sneaking up on your girlfriend's cat...

Click to expand...

HAHAH...awesome...have to give that a try :lol:

 

pike

Member

• Nov 29, 2003

• #8

i've also known noticed that aiming the camera at a tv allows you to see the tv screen refresh!!

 

motion

New Member

• Nov 30, 2003

• #9

This is because unlike our eyes, your webcam sensor (probably cmos) is sensitive to IR wavelengths.

Click to expand...

The camera seems to translate the IR wavelength into visible light.

 

Someone Electro

New Member

• Nov 30, 2003

• #10

The chip in the camera is sensetive to electro-magnetic energy.Linght is just a part of the electro-magnetic spectrum!In there is infraren,gama,microwaves,radio waves...

Or for those that know more abaot electronic than science:

A camera is just a plate of mini LDR whith a lens in front(LDRs detect IR too)

 

Sebi

Active Member

• Nov 30, 2003

• #11

The CCD (Charge Coupled Device) in cameras not contains LDR-s....
BTW: all old camera tubes can see the IR e.g. orticon,iconoscope,plumbicon, and vidicon.

 

Someone Electro

New Member

• Dec 1, 2003

• #12

Well i nont know exatly what is that chip caled.

PS:
I ment all those stuf:
LDR,Light sensitive diodes and transistors...

 

Sebi

Active Member

• Dec 1, 2003

• #13

LDR = Light Dependent Resistor, too slow for camera applications.

 

Someone Electro

New Member

• Dec 7, 2003

• #14

I have the "TRUST SPACEC@M 350 PORTABLE"

 

A

Agent 009

New Member

• Dec 8, 2003

• #15

Aiming the camcorder to the TV, and having the TV connected to the camcorder gives a WOW effect. Try it...

 

Someone Electro

New Member

• Dec 8, 2003

• #16

I know that efect! I tryed it whith my web cam!its becose its tacing the picture of the pictute picture its tacing(this goes in a unlimited loop)

Try rotating the cam a bit!


The same thing is of you tace a miror and pace a nother one paralel whith other (same efect but much more faster)

PS:
Its cool to step in a coridor whith mirors on bouth sides!it loocks like its a unlimited room