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- Newsgroups: comp.sys.hp48
- Path: sparky!uunet!elroy.jpl.nasa.gov!decwrl!csus.edu!netcom.com!payner
- From: payner@netcom.com (Rich Payne)
- Subject: Re: Exam mode in version J (var lock?)
- Message-ID: <1993Jan23.192650.21609@netcom.com>
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- References: <1993Jan19.164320.14325@doug.cae.wisc.edu> <VgBPXB15w165w@kf8nh.wariat.org>
- Date: Sat, 23 Jan 1993 19:26:50 GMT
- Lines: 54
-
- In article <VgBPXB15w165w@kf8nh.wariat.org> kf8nh@kf8nh.wariat.org (Brandon S. Allbery) writes:
- >kolstad@cae.wisc.edu (Joel Kolstad) writes:
- >> In article <1993Jan19.193729.6825@netcom.com> payner@netcom.com (Rich Payne)
- >> >In article <1993Jan16.125606.1940@doug.cae.wisc.edu> kolstad@cae.wisc.edu (J
- >> >>Actually, current fries you, regardless of whether it's lightning or RF.
- >> >Current is always the -dependant- variable, it is a result, not a cause.
- >>
- >> Current isn't a cause of frying you? Current is a _result_ of frying you?
- >> I think not. :-) Just kidding... I know you mean that current is the
- >> result of lightning.
- >
- >Actually, he and I both blew it. Voltage is the result of current across a
- >resistance, not vice versa.
-
- I have a battery. I measure the voltage with a balanced bridge, so essentially
- no current flows. How is this possible since voltage is a result? In fact,
- how are batteries possible?
-
- >If voltage were the important part,
-
- No voltage, no current.
-
- >superconductivity would have no use because you get a very, very low voltage
- >for even a high current.
-
- Said current will never flow without some applied voltage.
-
- >> > For safety sake, avoid high voltages, and
- >> >pay no attention to current arguments, which might be misleading to those
- >> >who have never worked with electricity.
- >>
- >> Yes, good advice. Although it's hard to avoid that 10KV potential on the
- >> door knob when you've been rubbing your feet across the carpet, sometimes.
- >> :-) (Especially in the dry frozen tundra of Wisconsin here!)
- >
- >As little as 30 volts can kill with a sufficiently high current.
-
- I was once working on a radio tower in the desert. I guess that I was
- sweating more that I was aware. I was shocked by a 60V source, which
- I had handled without danger for several years. The point is that the
- -other- variable, skin resistance, had changed. Current is a result of
- applied volatge across a resistance. Skin resistance is quite variable.
-
- >++Brandon
- >
- >He's BAAAACK! Brandon S. Allbery kf8nh@kf8nh.wariat.org
- >Help stamp out OSF/Motif in our lifetime!
-
-
- Rich
-
- payner@netcom.com
-
-
-