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Groups > alt.folklore.computers > #155042
| From | "gareth" <no.spam@thank.you.invalid> |
|---|---|
| Newsgroups | alt.folklore.computers |
| Subject | Re: 1957 LED |
| Date | 2015-12-11 17:37 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <n4f1gp$gts$1@dont-email.me> (permalink) |
| References | <aa4ec05a-2408-4323-b7fe-34d6d61651cb@googlegroups.com><m9kay.15466$qz7.15339@fx01.iad><n4cmfc$ftc$1@dont-email.me><alpine.LNX.2.02.1512102259410.27954@darkstar.example.org><n4ea6k$igc$1@dont-email.me> <20151211154649.335634cf5f6d52729fd8857f@eircom.net> |
"Ahem A Rivet's Shot" <steveo@eircom.net> wrote in message news:20151211154649.335634cf5f6d52729fd8857f@eircom.net... > On Fri, 11 Dec 2015 10:59:51 -0000 > "gareth" <no.spam@thank.you.invalid> wrote: > >> "Michael Black" <et472@ncf.ca> wrote in message >> news:alpine.LNX.2.02.1512102259410.27954@darkstar.example.org... >> > On Thu, 10 Dec 2015, gareth wrote: >> >> "Scott Lurndal" <scott@slp53.sl.home> wrote in message >> >> news:m9kay.15466$qz7.15339@fx01.iad... >> >>> hancock4@bbs.cpcn.com writes: >> >>>> Sylvania ran an ad for its LED back in 1957, called a photo diode. >> >>>> It was in C&A 09-1957, pg 19. >> >>> Photo-diode != LED >> >> Except that most LEDs are reciprocal to light of the same frequency. >> > But does that work both ways? >> > I know people have seen problems with semiconductor diodes that pick up >> > light from a nearby lightbulb. And certainly you can use an LED as a >> > receiver of light, though I suspect it's not too efficient. >> > But can you put light through a diode not intended to generate light, >> > and get light? >> >> Oh! for the days of scraping the black paint from an OC71 to >> make an OCP71! > > Only to discover that the new ones were filled with an opaque blue > gel and you were stuck with paying for a real one. The point being, of course, that in commercial products, the black paint peeling off resulted in undesirable photo-electric effects, so requiring a change to an opaque filling.
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1957 LED hancock4@bbs.cpcn.com - 2015-12-10 11:03 -0800
Re: 1957 LED Al Kossow <aek@bitsavers.org> - 2015-12-10 11:06 -0800
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-10 14:44 -0500
Re: 1957 LED hancock4@bbs.cpcn.com - 2015-12-11 07:41 -0800
Re: 1957 LED Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-11 16:37 +0000
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-11 14:42 -0500
Re: 1957 LED philo <philo@privacy.net> - 2015-12-10 13:56 -0600
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-10 22:59 -0500
Re: 1957 LED "Osmium" <r124c4u102@comcast.net> - 2015-12-11 08:20 -0600
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-11 14:33 -0500
Re: 1957 LED Quadibloc <jsavard@ecn.ab.ca> - 2015-12-13 07:58 -0800
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-13 13:00 -0500
Re: 1957 LED Lon <lon.stowell@comcast.net> - 2015-12-13 12:48 -0700
Re: 1957 LED Stan Barr <plan.b@bluesomatic.org> - 2015-12-14 09:07 +0000
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-14 11:47 -0500
Re: 1957 LED rpw3@rpw3.org (Rob Warnock) - 2015-12-16 14:55 +0000
Re: 1957 LED Stan Barr <plan.b@bluesomatic.org> - 2015-12-16 16:32 +0000
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-16 14:17 -0500
Re: 1957 LED "Charles Richmond" <numerist@aquaporin4.com> - 2015-12-16 18:15 -0600
Re: 1957 LED Stan Barr <plan.b@bluesomatic.org> - 2015-12-17 07:58 +0000
Re: 1957 LED Andrew Swallow <am.swallow@btinternet.com> - 2015-12-17 13:21 +0000
Re: 1957 LED Ingo Paschke <ipaschke@lpclabs.de> - 2015-12-14 11:11 +0100
Re: 1957 LED Stephen Wolstenholme <steve@easynn.com> - 2015-12-11 10:58 +0000
Re: 1957 LED Lon <lon.stowell@comcast.net> - 2015-12-13 12:50 -0700
Re: 1957 LED Stephen Wolstenholme <steve@easynn.com> - 2015-12-14 12:57 +0000
Re: 1957 LED "gareth" <no.spam@thank.you.invalid> - 2015-12-14 14:07 +0000
Re: 1957 LED Stephen Wolstenholme <steve@easynn.com> - 2015-12-14 14:33 +0000
Re: 1957 LED hancock4@bbs.cpcn.com - 2015-12-11 07:31 -0800
Re: 1957 LED Quadibloc <jsavard@ecn.ab.ca> - 2015-12-13 07:42 -0800
Re: 1957 LED Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-14 09:39 +0000
Re: 1957 LED Jon Elson <jmelson@wustl.edu> - 2015-12-14 17:07 -0600
Re: 1957 LED Alfred Falk <falk@arc.ab.ca> - 2015-12-15 18:53 +0000
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-15 15:05 -0500
Re: 1957 LED hancock4@bbs.cpcn.com - 2015-12-16 07:32 -0800
Re: 1957 LED Alfred Falk <falk@arc.ab.ca> - 2015-12-16 17:23 +0000
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-16 14:23 -0500
Re: 1957 LED Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-16 20:13 +0000
Re: 1957 LED hancock4@bbs.cpcn.com - 2015-12-16 13:15 -0800
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-17 14:53 -0500
Re: 1957 LED "Charles Richmond" <numerist@aquaporin4.com> - 2015-12-17 14:17 -0600
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-18 19:43 -0500
Re: 1957 LED "Charles Richmond" <numerist@aquaporin4.com> - 2015-12-20 20:02 -0600
Re: 1957 LED hancock4@bbs.cpcn.com - 2015-12-21 10:31 -0800
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-21 14:53 -0500
Re: 1957 LED mausg@mail.com - 2015-12-21 20:27 +0000
Re: 1957 LED Uncle Steve <stevet810@gmail.com> - 2015-12-17 18:48 -0500
Re: 1957 LED davidmylastname@acm.org (David Griffith) - 2015-12-16 02:43 +0000
Re: 1957 LED Mike Spencer <mds@bogus.nodomain.nowhere> - 2015-12-16 17:44 -0400
Re: 1957 LED scott@slp53.sl.home (Scott Lurndal) - 2015-12-10 19:13 +0000
Re: 1957 LED "gareth" <no.spam@thank.you.invalid> - 2015-12-10 20:17 +0000
Re: 1957 LED Lawrence Statton <lawrence@sengiuo.mx> - 2015-12-10 17:10 -0600
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-10 23:00 -0500
Re: 1957 LED isw <isw@witzend.com> - 2015-12-10 21:21 -0800
Re: 1957 LED Stan Barr <plan.b@bluesomatic.org> - 2015-12-11 08:01 +0000
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-11 14:30 -0500
Re: 1957 LED "Charles Richmond" <numerist@aquaporin4.com> - 2015-12-11 15:36 -0600
Re: 1957 LED Stan Barr <plan.b@bluesomatic.org> - 2015-12-12 07:55 +0000
Re: 1957 LED mausg@mail.com - 2015-12-12 11:20 +0000
Re: 1957 LED Stan Barr <plan.b@bluesomatic.org> - 2015-12-12 15:39 +0000
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-12 10:50 -0500
Re: 1957 LED Stan Barr <plan.b@bluesomatic.org> - 2015-12-13 08:00 +0000
Re: 1957 LED "gareth" <no.spam@thank.you.invalid> - 2015-12-13 11:10 +0000
Re: 1957 LED Lon <lon.stowell@comcast.net> - 2015-12-13 12:51 -0700
Re: 1957 LED "gareth" <no.spam@thank.you.invalid> - 2015-12-11 10:59 +0000
Re: 1957 LED Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-11 15:46 +0000
Re: 1957 LED "gareth" <no.spam@thank.you.invalid> - 2015-12-11 17:37 +0000
Re: 1957 LED Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-11 18:34 +0000
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-11 14:49 -0500
Re: 1957 LED "Charles Richmond" <numerist@aquaporin4.com> - 2015-12-11 15:39 -0600
Re: 1957 LED Bob Eager <news0005@eager.cx> - 2015-12-11 22:46 +0000
Re: 1957 LED Michael Black <et472@ncf.ca> - 2015-12-11 19:07 -0500
Re: 1957 LED Bob Eager <news0005@eager.cx> - 2015-12-12 01:04 +0000
Re: 1957 LED Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-12 08:54 +0000
Re: 1957 LED hancock4@bbs.cpcn.com - 2015-12-11 11:52 -0800
Re: 1957 LED "Charles Richmond" <numerist@aquaporin4.com> - 2015-12-11 15:46 -0600
Re: 1957 LED Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-11 22:56 +0000
Re: 1957 LED "Charles Richmond" <numerist@aquaporin4.com> - 2015-12-11 15:35 -0600
Re: 1957 LED Quadibloc <jsavard@ecn.ab.ca> - 2015-12-13 07:51 -0800
Re: 1957 LED Lawrence Statton <lawrence@senguio.mx> - 2015-12-10 17:09 -0600
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