[cheryl j (OP)]

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?

[CliffordK]

You could try it and let us know what you find  []

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.

[syhprum]

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   

[RD]

similar thread ... http://www.thenakedscientists.com/forum/index.php?topic=24960.msg270532#msg270532

[Don_1]

It might work over twice the usual distance if you have a double chin.

............ Am I gullible?

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