The vaporizor is the application I had in mind to send; I just didn't get around to it.
I would tell children: The electricity (current) flows directly through the water in the vaporizor and causes the water to boil making the steam vapor. Most grade school children will have seen vaporizors at one time or another, so they will identify with that. When the vaporizor boils away all of the water the electricity flows through, the boiling and steaming stop. The electrical parts of these vaporizors are made inside of a hard plastic housing to prevent a person from getting shocked by the electricity. Only people that know how to repair vaporizors are allowed to take them apart because they are dangerous when they are outside of the hard plastic housing. Lou Aiken 27109 Palmetto Drive Orange Beach, AL 36561 USA tel ++ 1 251 981 6786 fax ++ 1 251 981 3054 ----- Original Message ----- From: <[email protected]> To: Joe P Martin <[email protected]> Cc: <[email protected]> Sent: Thursday, September 12, 2002 12:21 PM Subject: Re: Water + Electricity > > > > I missed the gist of the question the first time around. > > A common domestic application of water and electricity can be found in > "vaporizors". The devices are simply two electrodes at power line potential > immersed in water. The active area is restricted a bit to keep the water from > convecting excessively. The result is that the water begins to warm due to > disolved minerals (providing ions). The elevated temperature increase > conductivity, increasing heating, until finally the water starts boiling. The > vaporizor "shuts off" when the level of the water drops below the electrodes. > > If electroplating is a mixture of water and electricity, then so are most > batteries. > > Don Borowski > Schweitzer Engineering Labs > Pullman, WA > > > > > > "Joe P Martin" <[email protected]> on 09/11/2002 03:58:29 PM > > Please respond to "Joe P Martin" <[email protected]> > > To: [email protected] > cc: (bcc: Don Borowski/SEL) > Subject: Water + Electricity > > > > > Greetings, > > A friend of mine is teaching elementary school students on the dangers of > mixing water with electricity. However, he also wants to show examples of > situations where water and electricity mix, yet does not cause a problem. > Does anyone have any examples? > > Also, does anyone have a great elementary school explanation as to what > elements or conditions are needed to be present before water and > electricity become dangerous? > > All responses are appreciated. > > Joe Martin > Applied Biosystems > [email protected] > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [email protected] > Dave Heald: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > > > > > > This e-mail may contain SEL confidential information. The opinions expressed > are not necessarily those of SEL. Any unauthorized disclosure, distribution or > other use is prohibited. If you received this e-mail in error, please notify > the sender, permanently delete it, and destroy any printout. Thank you. > > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [email protected] > Dave Heald: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
