Naked Science Forum
Non Life Sciences => Technology => Topic started by: Steve Austin on 29/11/2009 17:30:02
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Steve Austin asked the Naked Scientists:
When I try to locate my car in a large car park I often use the 'panic' button to momentarily set off the alarm to locate my car.Â
When I am out of range I have learned that I can hold the car alarm remote to my chin and the signal makes it to my car even when it is out of the remote's normal range.Â
What is the science happening here when I hold the remote to my chin and sets off the alarm from a greater distance?
Regards
Steve Austin
What do you think?
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You are using your head as an antenna, evidently increasing the range of the signal.
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http://www.thenakedscientists.com/forum/index.php?topic=24960.0
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Might not the fact that you're holding it higher, and probably above the roofline of the surrounding vehicles make a difference?