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- Newsgroups: misc.consumers
- Path: sparky!uunet!usc!sdd.hp.com!hp-cv!hp-pcd!hpcvaac!billn
- From: billn@hpcvaac.cv.hp.com (bill nelson)
- Subject: Re: Tell me about electric blankets
- Message-ID: <1992Dec27.211419.29448@hpcvaac.cv.hp.com>
- Organization: Hewlett-Packard Company, Corvallis, Oregon USA
- References: <1992Dec27.135026.4286@doug.cae.wisc.edu>
- Distribution: na
- Date: Sun, 27 Dec 1992 21:14:19 GMT
- Lines: 21
-
- kolstad@cae.wisc.edu (Joel Kolstad) writes:
- :
- : >: Trust me. Hook up one of your HP constant current power supplies to a coil
- : >: of wire or a resistor. Set it to pump out 1A DC, constant current. I
- : >: guarantee you that any E field you measure by the coil is not being
- : >: produced by that coil. (Try inducing a voltage in another nearby coil for
- : >: starts. It isn't going to happen, because you need an EM field to induce
- : >: voltages, and you only have a M field.)
- : >
- : >Nope - all you have to do is move the other coil. It is a simple high
- : >school physics experiment. Any conductor moving in that field is going
- : >to generate a changing electric current, with its associated electic field.
- :
- : That's true, but the assumption is that people don't move very much while
- : sleeping, no?
-
- Hm. But they do, at least, in my experience. People tend to continuously
- toss and turn - some, more than others. I am one of the "more" crowd.
-
- Bill
-
-