Re: [Phys-L] youtube the.tragic story of nikola Tesla

[Daniel MacIsaac <danmacisaac@gmail.com>]

well, used to be we could use cheap lossy transformers for every shift in potential.
Now we have nice cheap silicon semiconductors, but lots of extant grid infrastructure.
Parts of the WNY grid probably date back to Tesla and Westinghouse, so there’s
lots of savings to be had by replacement for efficiency.  Infrastructure, as it were…

Dan M

> On Feb 22, 2021, at 14:19, Arlyn DeBruyckere <arlyn.debruyckere@isd423.org> wrote:
>
> Bill,
>
> Consider powerlines with 100 Ω of resistance (not much). If a consumer
> demands 1,000 Watts of power (1 kW, again not much) at 100 Volts (just to
> make the math easy) they would need 10 Amps of current (P=VI). For 10 Amps
> of current on the power company would waste 10,000 Watts on the power lines
> (P=I*I*R), delivering only 9% of the generated power. If instead the power
> company delivered the 1,000 Watts of power at 100,000 Volts the current
> would only be 0.01 Amps and this 0.01 Amps of current will cause the power
> company to waste only 0.01 Watts, delivering 99+% of the generated power.
> The issue with 100,000 Volts is that you'd need a "10 foot pole" just to
> plug in your toaster.
> https://www.youtube.com/watch?v=CB5UXvMTNVo
> The solution is using transformers to change the Voltage with little power
> loss down to the usual 110-120 Volts because this spark is only a few
> millimeters long.
>
>
>
>
>
> On Sun, Feb 21, 2021 at 10:49 PM Bill Norwood via Phys-l <
> phys-l@mail.phys-l.org> wrote:
>
> > No, I just need to understand why more electrical energy can be
> > transmitted when using ac
> >
> > Bill Norwood
> >
> > Sent from my iPhone
> >
> > > On Feb 21, 2021, at 11:10 PM, Marx, David via Phys-l <
> > phys-l@mail.phys-l.org> wrote:
> > > Just to check, are you asking why we use AC instead of DC for power
> > transmission?
> > > -----Original Message-----
> > > From: Phys-l <phys-l-bounces@mail.phys-l.org> On Behalf Of Bill Norwood
> > via Phys-l
> > > Sent: Sunday, February 21, 2021 9:45 PM
> > > To: phys-l@mail.phys-l.org
> > > Cc: bnorwood111@gmail.com
> > > Subject: [Phys-L] youtube the.tragic story of nikola Tesla
> > >
> > > [This message came from an external source. If suspicious, report to
> > abuse@ilstu.edu<mailto:abuse@ilstu.edu>]
> > > In this story of Tesla's life it is mentioned that a crucial reason for
> > going with ac for the bulk of electric power transmission is the ability to
> > deliver (I think) twice as much power with pre-existing electric lines.
> > > Could someone please explain how that works.
> > >
> > > Thanks,
> > >
> > > Bill Norwood
> > https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.google.com%2Fsearch%3Fq%3Dyoutube%2Bthe.tragic%2Bstory%2Bof%2Bnikola%2BTesla%26ie%3DUTF-8%26oe%3DUTF-8%26hl%3Den-us%26client%3Dsafari&amp;data=04%7C01%7C%7C7a3f670cf1284d41f30008d8d6e44850%7C085f983a0b694270b71d10695076bafe%7C1%7C1%7C637495623252339030%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=Fr6cdXCRzbTh4saEOROI6%2FSmbFUhcQb1izKuWx13ZQc%3D&amp;reserved=0
> > > Sent from my iPhone
> > > _______________________________________________
> > > Forum for Physics Educators
> > > Phys-l@mail.phys-l.org
> > https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.phys-l.org%2Fmailman%2Flistinfo%2Fphys-l&amp;data=04%7C01%7C%7C7a3f670cf1284d41f30008d8d6e44850%7C085f983a0b694270b71d10695076bafe%7C1%7C1%7C637495623252339030%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=js9cnz9Fco6vEgE1c%2BaiDa2eydtPJLptb56EJavzyf8%3D&amp;reserved=0
> > > _______________________________________________
> > > Forum for Physics Educators
> > > Phys-l@mail.phys-l.org
> > > https://www.phys-l.org/mailman/listinfo/phys-l
> > _______________________________________________
> > Forum for Physics Educators
> > Phys-l@mail.phys-l.org
> > https://www.phys-l.org/mailman/listinfo/phys-l
>
>
> -- 
> Arlyn DeBruyckere
> Science Teacher
> School Photographer
> Hutchinson High School
> 1200 Roberts Road SW
> Hutchinson MN 55350
>
> HHS Weather at http://weather.isd423.org/
>
> View My Calendar at
> https://www.google.com/calendar/embed?src=arlyn%40arlynsphotos.com&ctz=America/Chicago
>
> https://sites.google.com/a/isd423.org/mrdebruyckere/
> http://www.hutchk12.org
> mailto:arlyn.debruyckere@isd423.org
>
> If it is to be it is up to me!
>
> Hutchinson Sports Photos on the Web
> http://www.arlynsphotos.smugmug.com
> _______________________________________________
> Forum for Physics Educators
> Phys-l@mail.phys-l.org
> https://www.phys-l.org/mailman/listinfo/phys-l