Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
The recent issue of "The Physics Teacher" has an article titled "HearingI have been amused by the thread that was spun from this article, and it
Light." (Phys. Teach, September 2000, page 356.)
We are unable to reproduce an experiment described in this article and we
wonder if anyone else has tried it. The experiment uses a half-blackened
pickle jar to receive the light of an incandescent light bulb. A small hole
in the lid serves as a place for one to place his ear, and the claim is that
the heating/cooling of the air in the jar (as the bulb's light output
fluctuates due to 60-cycle AC current) can be heard as a 120-hertz tone.