Naked Science Forum
Non Life Sciences => Technology => Topic started by: cheryl j on 22/11/2013 14:30:33
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There was this odd tip on facebook that said putting a car or tv remote under your chin and opening your mouth will extend its range. Is that true, and why? Am I gullible?
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You could try it and let us know what you find [;D]
Most TV remotes use IR, and require direct line of sight between the transmitter and receiver.
I find it doubtful that your chin trick will do much. However, gaining elevation over using it at lap level may help a bit if there are potential obstructions.
Presumably the LED could be focused better to extend range, but that would also require one to point it directly at the receiver.
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Extending the range of a car unlocking remote control by holding in a certain position works because of at the relatively long wave length at which these devices work (about 0.6m ) configuring the body in certain ways make it act as an improved antenna.
Remote controls for TV,s etc Work in the infra red range about 1 micro meter so such considerations are not relevant
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similar thread ... http://www.thenakedscientists.com/forum/index.php?topic=24960.msg270532#msg270532
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It might work over twice the usual distance if you have a double chin.
............ Am I gullible?
I have developed a sure fire way to tell if someone is gullible.
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