Eschew obfuscation! Simon King <[EMAIL PROTECTED]> wrote:
>...or as Sir Humphrey Appleby may say, >A multiplicity of scientific visualization devices implement a form of >junction rectification whereby heat is discharged, or absorbed, when an >electric current passes across a junction between two materials as opposed >to the more vernacular process whereby the liquefaction of oxygen and >nitrogen is used for noise diminution through a reduction in absolute >temperature. > >:-) >Simon > >-----Original Message----- >From: Doug Franklin [mailto:[EMAIL PROTECTED]] >Sent: Friday, 10 January 2003 1:38 PM >To: [EMAIL PROTECTED] >Subject: Re: Speak Amurricun! > > >Hi Mike, > >On Thu, 09 Jan 2003 23:26:32 -0600, Mike Johnston wrote: > >> > A lot of scientific imaging devices seem to utilize semiconductor >> > Peltier effect devices rather than gas cryogenics for noise >> > reduction through cooling. >> >> Whud he say? > >You ever seen one of those cigarette/cigar lighters that goes "click" >instead of the long drawn-out "swish" of one with flint? Well, that was a >piezoelectric lighter. Strangely enough, deforming quartz generates a >voltage across the quartz crystal. Even stranger, applying a voltage >(current?) across the crystal of quartz will make it change shape. > >Peltier devices are similar, except instead of the electricity changing >their shape, it makes one side cold and the other warm. > >TTYL, DougF KG4LMZ -- Mark Roberts Photography and writing www.robertstech.com
