On Tue, 26 Aug 2008 19:42:28 -0400, you wrote: > >Actually MythBusters did a piece on that. > >Seems that there was a myth that one could pee on the third rail of an >electric railway (600 VDC in NYC subways) and get away with it unharmed. > >So they did their thing and discovered with the high speed camera that after a >certain distance from the source the stream of pee breaks up into individual >drops so it does not conduct electricity. > >I have considered making an electric fence around our herb garden on board to >keep the cats out by hooking up the fence wire to my 120 vac line through a >several one megohm resistor. > Why not give them their own pot of grass, and put sticky paper around your pots?
>Anyone think that would be both effective and safe? > >Let's see: 120 volts divided by a meg is about a tenth of a milliamp.... There are Scat Mats which you plug into the house current to give a cat that jumps on the sofa (or whatever) a shock. Don't know how effective they are - I gave my mom one once. We had an electric fence for the horses, and they would use their muzzle whiskers to check if it was on. If it was, they would gang up on the horse that was the least likely to give them a fight and push her through the fence so that they could all get out. For humans - 1-8 ma (.001-.008 amps) Sensation, tingling 8-15 ma (.008-.015 amps) Pain 15-20 ma (.015-.02 amps) Loss of muscle control 20-50 ma (.02-.05 amps) Difficult breathing, may cause damage to brain tissue and blood vessels, may be fatal I would assume (although I do not know for sure) that these figures are based on the normal body mass of an adult male. I don't know how much different it would be for females or for smaller mammals like cats. > > >While there were two good ideas on how to turn a latching relay on or off >using one wire, nobody came up with a way to use one wire (plus ground and 12 >VDC at each end) to transmit both high temp and low oil alarm signals. I am >surprised. I know we have lots of clever engineers on the List. > > > >Norm >S/V Bandersnatch >Lying Julington Creek >30 07.695N 081 38.484W > > > >----- Original Message ----- >From: JohnB >To: [email protected] >Sent: 8/26/2008 12:53:57 PM >Subject: Re: [Liveaboard] recent info about Venezuela > > >[EMAIL PROTECTED] wrote: >anyone tried an electric fence charger? > >Puts a whole new light on peeing over the rail at night. > >John _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
