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2012-04-16 01:05 <qi-bot> [commit] Xiangfu: split common to c/r/led for follow one lib per symbol (master) http://qi-hw.com/p/kicad-libs/82f8429
2012-04-16 01:06 <xiangfu> cladamw, wpwrak c/r/led done
2012-04-16 01:07 <xiangfu> cladamw, please update your local git repo. :)
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2012-04-16 01:20 <cladamw> xiangfu tks. :)
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2012-04-16 01:32 <qi-bot> [commit] Adam Wang: added Xiangfu's new libraries for symbols (master) http://qi-hw.com/p/kicad-libs/9f18a29
2012-04-16 01:34 <qi-bot> [commit] Adam Wang: added pwr.lib (master) http://qi-hw.com/p/kicad-libs/b622799
2012-04-16 01:48 <cladamw> wpwrak, one interesting question, I changed +3.3 symbol text size to 0.06" under pwr.lib, but everytime I import +3.3V symbol but its text size still 0.03", does KiCad always have its rules to link internally ?
2012-04-16 01:51 <cladamw> i have to manually change it into 0.06" size. phew ~ bad
2012-04-16 01:54 <wpwrak> maybe you still have the other lib in your .pro
2012-04-16 02:01 <cladamw> no, i removed "power.lib" from .pro
2012-04-16 02:03 <cladamw> maybe caused by "../../../../usr/share/kicad/library/ is still existed there under "User define search path" ?
2012-04-16 02:05 <wpwrak> maybe you also have to delete *-cache.lib
2012-04-16 02:06 <cladamw> hmm...after I removed "../../../../usr/share/kicad/library/" there under "User define search path", it still being imported a 0.03" size. 
2012-04-16 02:08 <cladamw> no, i'm editing under /kicad-libs/components/ , so there's no *-cache.lib though :(
2012-04-16 02:09 <wpwrak> so where do you see it appear with size 0.030" ? in the component editor or in the schematics editor ?
2012-04-16 02:09 <cladamw> don't know why caused it. I hope it's not Kicad internal detection system. but seems to be ?
2012-04-16 02:10 <cladamw> I compared both. :(
2012-04-16 02:10 <wpwrak> so it happens in both ? maybe you simply didn't save your changes then
2012-04-16 02:10 <wpwrak> note that you have to save the component into the library and then the library to disk
2012-04-16 02:10 <cladamw> in components editor I see 0.06" but in schematic editor it's 0.03". 
2012-04-16 02:10 <wpwrak> ah, good
2012-04-16 02:11 <wpwrak> then exit kicad. make sure there's no *-cache.lib, check that .pro is correct
2012-04-16 02:11 <wpwrak> then start eeschema, delete the old component, and put the new one. that must work :)
2012-04-16 02:11 <cladamw> no i saved it in component editor. :(
2012-04-16 02:12 <cladamw> hmm... okay... check file itself. phew~
2012-04-16 02:14 <cladamw> 1. closed KiCad, no *-cache.lib in there
2012-04-16 02:14 <wpwrak> if it doesn't work, you have to debug it ;-)
2012-04-16 02:21 <cladamw> wpwrak, nice, yes just fixed this bug by directly editing pwr.lib phew ;-)
2012-04-16 02:25 <wpwrak> which means that you didn't actually save your changes before :)
2012-04-16 02:27 <cladamw> hmm ? but i clicked "Save current library to disk" after i changed. :-)
2012-04-16 02:29 <wpwrak> did you also save the component to the current library ?
2012-04-16 02:29 <qi-bot> [commit] Adam Wang: saved a 0.06" text size font (master) http://qi-hw.com/p/kicad-libs/0144a65
2012-04-16 02:29 <wpwrak> there are two steps: component -> library and library -> disk/file
2012-04-16 02:29 <cladamw> yeah... :-)
2012-04-16 02:31 <cladamw> btw, do you think that we should keep the same symbol 3V3 as m1r4's AD schematic symbol ? or use a +3.3V ?
2012-04-16 02:32 <wpwrak> i kinda like 3V3. it's short :)
2012-04-16 02:33 <wpwrak> and negative voltages are fairly uncommon in modern circuits, so the "+" adds little information
2012-04-16 02:34 <cladamw> okay
2012-04-16 02:51 <qi-bot> [commit] Adam Wang: changed +3.3V to 3V3 text (master) http://qi-hw.com/p/kicad-libs/5cc6353
2012-04-16 02:57 <kristianpaul> viric: perhaps, but then i will need something symbolic to give in exchange
2012-04-16 03:05 <qi-bot> [commit] Adam Wang: added 1V2, 1V8, 2V5, 5V, USBEXT5V symbols (master) http://qi-hw.com/p/kicad-libs/3f80466
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2012-04-16 03:25 <qi-bot> [commit] Adam Wang: changed TP's reference text to size 0.06" (master) http://qi-hw.com/p/kicad-libs/8b1d180
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2012-04-16 03:59 <qi-bot> [commit] Adam Wang: added chip name "C_P" with polarized symbol (master) http://qi-hw.com/p/kicad-libs/6065798
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2012-04-16 05:56 <qi-bot> [commit] Adam Wang: added con.lib (master) http://qi-hw.com/p/kicad-libs/5bed93e
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2012-04-16 06:47 <viric> kristianpaul: give an autograph
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2012-04-16 07:02 <qi-bot> [commit] Adam Wang: added GND, AUDIO_AGND, VIDEOIN_AGND symbols (master) http://qi-hw.com/p/kicad-libs/6012de1
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2012-04-16 07:28 <qi-bot> [commit] Adam Wang: added filter.lib to include FB (master) http://qi-hw.com/p/kicad-libs/f0c590a
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2012-04-16 08:38 <qi-bot> [commit] Adam Wang: added crystal.lib (master) http://qi-hw.com/p/kicad-libs/a0f1bf0
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2012-04-16 09:23 <qi-bot> [commit] Xiangfu: new components switch, take from default device (master) http://qi-hw.com/p/kicad-libs/ef60239
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2012-04-16 09:35 <cladamw> xiangfu, there's a fsmra2jh.lib i created already. you can use it for SW2. :-)
2012-04-16 09:37 <cladamw> but you just created a switch.lib, i think it's nice. so maybe just let it includes fsmra2jh ?
2012-04-16 09:38 <xiangfu> agree. 
2012-04-16 09:39 <wpwrak> switches should have generic names anyway, reflecting their connectivity but not any specific parts
2012-04-16 09:39 <wpwrak> otherwise, good luck with the thousands of part numbers just for simple on/off switches with two contacts :)
2012-04-16 09:44 <cladamw> wpwrak, fsmra2jh.lib i created which is exactly the on/off switches with two contacts/ for soldering. so the name may just not good only. We can just rename it to be nice one. But so far the p/n always be used for m1. :)
2012-04-16 09:44 <xiangfu> the fsmra2jh have a simple SW. 
2012-04-16 09:45 <xiangfu> cladamw, I think we can just remove hte fsmr... to switch and remove the switch.lib I have added.
2012-04-16 09:45 <cladamw> xiangfu, yes, just on/off but with another two contact for shields' contacts.
2012-04-16 09:46 <cladamw> yeah...i agreed, just includes it into your switch.lib :-o
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2012-04-16 09:48 <cladamw> wpwrak, btw, since the switch has many different types. like http://en.wikipedia.org/wiki/Switch
2012-04-16 09:49 <wpwrak> i think switch configurations are too complex for a full taxonomy. so we may want to only have a systematic part of the general properties, such as on/off vs. pulse, number of poles, number of ground pins, etc., and then just number or A/B/C/... them
2012-04-16 09:50 <qi-bot> [commit] Xiangfu: merge fsmra2jh.lib and switch.lib (master) http://qi-hw.com/p/kicad-libs/7b8cb31
2012-04-16 09:51 <wpwrak> ad yes, SPST etc. should be very good for this taxonomy :)
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2012-04-16 09:52 <cladamw> wpwrak, so for example: SPST-2S which means Single pole, single throw, two shields somethings like that. :-)
2012-04-16 09:52 <wpwrak> there
2012-04-16 09:52 <wpwrak> 's more for relays: http://en.wikipedia.org/wiki/Relay
2012-04-16 09:53 <wpwrak> in particular then closing vs. opening switch (NO/NC)
2012-04-16 09:53 <cladamw> yeah .. more one parameter (NO/NC)
2012-04-16 09:54 <wpwrak> yeah, that sounds pretty good. maybe add a SW_ prefix. or maybe PUSH_
2012-04-16 09:54 <cladamw> well.. i think that we just one-by-one to create each catogry
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2012-04-16 09:54 <wpwrak> yeah, we can make a first try, then see how it goes
2012-04-16 09:54 <cladamw> since that switch belongs to "Tact Switch" even not for ST
2012-04-16 09:54 <cladamw> sure.
2012-04-16 09:56 <wpwrak> we also have the possibility of imposing another, more dynamic hierarchy on top of all this in the "catalog". http://downloads.qi-hardware.com/people/werner/tmp/out2.pdf
2012-04-16 09:56 <DocScrutinizer> moo
2012-04-16 09:57 <DocScrutinizer> if you're struggling with switches, thank God you're not using electron Valves ;-)
2012-04-16 09:57 <wpwrak> so the component name would give a hint of what it is and it would make sure there are no name conflicts. for actually finding a part, you could use the catalog or kicad's component browser. the catalog is more flexible (you can move things around easily) and has an arbitrarily deep hierarchy
2012-04-16 09:57 <cladamw> wpwrak, you means creating a like catalog hierarchy page to get into sub page for symbols ?
2012-04-16 09:57 <DocScrutinizer> ;-D
2012-04-16 09:58 <wpwrak> cladamw: not in kicad. outside of it. see the PDF above
2012-04-16 09:58 <cladamw> wpwrak, yes, i see it. how "dynamic" ?
2012-04-16 09:59 <wpwrak> cladamw: in kicad, it would be too inconvenient because you'd have to switch between projects
2012-04-16 09:59 <cladamw> yeah
2012-04-16 10:00 <wpwrak> (dynamic) there's is a text file that describes the hierarchy, so it's very easy to reorganize things. and changes don't affect schematics that already use the component we're moving around
2012-04-16 10:01 <wpwrak> here's the hierarchy file for the PDF above: http://downloads.qi-hardware.com/people/werner/tmp/EXPAND.txt
2012-04-16 10:01 <cladamw> wpwrak, sorry that. now i know your ideas on "dynamic" (i.e. is folder text ) :-)
2012-04-16 10:01 <wpwrak> yeah, it's much like folders
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2012-04-16 10:15 <DocScrutinizer> wpwrak: what a nifty think are you planning now?
2012-04-16 10:15 <DocScrutinizer> thing*
2012-04-16 10:17 <DocScrutinizer> and Hi Adam!
2012-04-16 10:18 <cladamw> DocScrutinizer, Hi Hi. :-)
2012-04-16 10:20 <wpwrak> DocScrutinizer: oh, it's just a catalog that also allows us to review pin types. pin types are normally not visible and are hard to get right
2012-04-16 10:21 <DocScrutinizer> rrright
2012-04-16 10:21 <wpwrak> DocScrutinizer: nothing new really. we had something similar already for gta02-core. but there, it was all done in kicad and thus less flexible
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2012-04-16 13:16 <qi-bot> [commit] Adam Wang: added bnc, switch, filter (master) http://qi-hw.com/p/kicad-libs/0c0c8ea
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2012-04-16 14:50 <Ayla> mth, larsc: on sound/soc/codecs/jz4740.c:112, the "DAC Switch" available from userspace seems to only change one bit of a register, am I right?
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2012-04-16 15:27 <LunaVorax> Hello everyone!
2012-04-16 16:06 <larsc> Ayla: sort of. if there is no other active part, it will shutdown the whole analog output domain
2012-04-16 16:06 <larsc> and also the dac itself
2012-04-16 16:06 <larsc> DAPM uses a graph
2012-04-16 16:07 <Ayla> well, if I understood correctly, several steps are needed to power on/off the DAC without creating noises
2012-04-16 16:09 <kristianpaul> viric: lol
2012-04-16 16:12 <DocScrutinizer> Ayla: good point :)
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2012-04-16 16:13 <DocScrutinizer> I'm generally no friend of too much "AI" in kernel(-drivers)
2012-04-16 16:14 <DocScrutinizer> esp when there's no way to override or even just check what that AI is doing
2012-04-16 16:16 <DocScrutinizer> first and foremost a driver shall export hw functions completely and in a basically unfiltered way. Then on top of that it *may* implement some *optional* "intelligence"
2012-04-16 16:20 <DocScrutinizer> you could argue if a driver should allow to even write invalid values to registers or rather limit acceptable values to the range that's defined by the chip's/circuit's specs
2012-04-16 16:22 <DocScrutinizer> for some drivers like e.g. lp5523 you'd think they better had limited /sys/class/leds/lp5523:kb3/led_current to values that won't fry your LED
2012-04-16 16:23 <DocScrutinizer> for other drivers (e.g. FMTX) you'd think it would be nice to test what results you get when writing values higher then the "allowed" 120d to tx_power
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2012-04-16 16:25 <DocScrutinizer> my take on that usually is "get a module parameter 'sanity-check=disable' to pass to the driver on modprobing it"
2012-04-16 16:26 <DocScrutinizer> but definitely I think a driver that doesn't even expose *any* way to fiddle with e.g. audio codec function block suspend, that's broken by design
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2012-04-16 16:41 <qi-bot> The build was successful: http://fidelio.qi-hardware.com/~xiangfu/build-nanonote/openwrt-xburst.full_system-20120415-1203 
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2012-04-16 17:17 <viric> wpwrak, kristianpaul: YPF, argentina! :)
2012-04-16 17:19 <viric> congratulations.
2012-04-16 17:28 <viric> I can't tell much for the argentinian part, but repsol is not my list of friends.
2012-04-16 17:29 <viric> But it may be all circus, as usual.
2012-04-16 17:32 <wpwrak> viric: you're congratulating argentina for being de facto blocked from equitable investment for at least the next three years, after setting this sort of precedent ? :)
2012-04-16 17:37 <viric> wpwrak: among other things, yes ;)
2012-04-16 17:37 <viric> but things are not so simple.
2012-04-16 17:38 <viric> wpwrak: today one of those in the Spanish government said: "Ya no estamos en campaña; es momento de decir lo que de verdad pensamos"
2012-04-16 17:38 <viric> (unrelated to ypf :)
2012-04-16 17:54 <wpwrak> viric: well, if you google for moreno or boudou, you should be able to get a fairly quick impression of how politics are going here these days
2012-04-16 17:55 <wpwrak> viric: i appreciate your schadenfreude at your government receiving a blow below the belt, but i think this may just be a case of everyone ending up on the losing side
2012-04-16 17:55 <viric> it can be, it's hard to know in advance.
2012-04-16 17:55 <viric> It's some kind of elite against some other kind of elite
2012-04-16 17:55 <viric> (or same kind, but different people at least :)
2012-04-16 17:56 <wpwrak> (know in advance) right. if you jump out of a 10th floor window, you can't be sure in advance what exactly will happen :)
2012-04-16 17:56 <viric> ah well, you seem quite sure :)
2012-04-16 17:57 <wpwrak> when you see patterns repeat for the third of fourth time, you begin to have a hunch :)
2012-04-16 17:58 <wpwrak> only a year ago, the same president was praising ypf for their great investments in argentina
2012-04-16 17:58 <viric> I've no idea on the argentinian government. As for the Repsol side... do you think it has been a trick, and the old owners have received benefit of this operation?
2012-04-16 17:59 <wpwrak> now, in the middle of a major crisis involving the vicepresident, all of a sudden they pop out that "patriotic" card. malvinas, anyone ? :)
2012-04-16 17:59 <wpwrak> there will probably be endless lawsuits following this coup
2012-04-16 17:59 <wpwrak> much like after the "haircut" in 2002
2012-04-16 18:00 <wpwrak> some of the 2002 lawsuits are still going on. and present a danger for argentine assets abroad. as soon as someone can plausibly show that they're under the control of the government, they can be sized. that has happened already.
2012-04-16 18:01 <viric> wpwrak: do I read right that the nationalisation has been realized by Dromi, who prepared the former privatization (of YPF)?
2012-04-16 18:01 <wpwrak> so the YPF coup may also have some unintended consequences
2012-04-16 18:02 <viric> If someone is psichopatic, egoist, greedy, and corrupt, that has lots of chances to participate with great power in a country government ;)
2012-04-16 18:03 <viric> wpwrak: I hope the spaniards don't decide to go into some kind of 'war'... as in the Perejil case
2012-04-16 18:06 <viric> https://es.wikipedia.org/wiki/Incidente_de_la_isla_de_Perejil I hope we can see "Perejil: the movie" some day
2012-04-16 18:12 <wpwrak> dromi ? haven't even heard that name. i think on the argentina side, kicillof had a lot to do with it. a rather dubious character.
2012-04-16 18:12 <viric> Roberto Dromi
2012-04-16 18:13 <wpwrak> argentina has almost no military force these days. which is good. keeps the government at least from that sort of folly
2012-04-16 18:13 <viric> Here they don't know whom to give more money: military or church
2012-04-16 18:14 <wpwrak> for spain, it may be attractive, though. kill off a few angry young man. maybe they could put them on board of decrepit ships, sink them, and then blame argentine submarines :)
2012-04-16 18:14 <wpwrak> a good investment in either case :)
2012-04-16 18:14 <viric> wpwrak: if you google from roberto dromi, you see him both in the privatization and in the nationalisation :)
2012-04-16 18:14 <viric> wpwrak: could be :)
2012-04-16 18:15 <viric> wpwrak: google for.
2012-04-16 18:15 <qi-bot> Pete Ippel ‽: @qihardware @rejon @fabricatorz check out the typing glove http://t.co/0sdnsxDd that @Bei337 has made.  Nice to plugin @milkymistvj. ( 191954778920730624@hypermodern - 20s ago via HootSuite )
2012-04-16 18:17 <wpwrak> i only see him mentioned on the side of privatizations
2012-04-16 18:18 <viric> http://www.bnamericas.com/news/electricpower/Repsol_Plans_YPF_Share_Acquisition3
2012-04-16 18:18 <viric> wpwrak: when I said "google", in fact I was using ddg :)
2012-04-16 18:20 <wpwrak> in that deal, he was quite on the privatization side
2012-04-16 18:20 <wpwrak> i don't see any mention on him pushing nationalization anywhere
2012-04-16 18:21 <wpwrak> of course, some things were nationalized. but that wasn't his doing
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2012-04-16 18:41 <qi-bot> freerv2: @qihardware  I also make money online..and i found..success with this method! It give me over 50$/day @HomeMakeMoney__ ( 191961161535717376@freerv2 - 59s ago via web )
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2012-04-16 18:45 <kyak> little spammer...
2012-04-16 19:16 <viric> :)
2012-04-16 19:30 <kristianpaul> viric: i'm living at argetina btw
2012-04-16 19:30 <kristianpaul> argentina*
2012-04-16 19:31 <kristianpaul> not
2012-04-16 19:31 <kristianpaul> argh
2012-04-16 19:31 <kristianpaul> not living
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2012-04-16 20:31 <viric> kristianpaul: ah :)
2012-04-16 20:31 <viric> kristianpaul: colombia? I can't recall
2012-04-16 20:32 <wpwrak> yes, the country of the traitors who didn't put argentina's malvinas on the agenda :)
2012-04-16 20:35 <viric> hahaha
2012-04-16 20:43 <wpwrak> i think argentina will now retaliate by excluding columbian students from some scholarship programs
2012-04-16 20:44 <wpwrak> at least that's what i gather may be behind an odd "interview" that popped up in some approval process a brazilian friend is presently going through
2012-04-16 20:47 <wpwrak> the timing isn't entirely right, though. that thing came up a few days before the summit. maybe it's in response to police reports indicating that some 80-90% of burglaries are committed by columbian gangs that send "students" to act as beach heads (so they have all their papers in order an can rent an apartment. then the rest of the gang follows without having to bother with bureaucratic niceties)
2012-04-16 20:48 <viric> what a complot
2012-04-16 20:48 <wpwrak> yeha. maybe it's just the ritualized feeding of xenophobia :)
2012-04-16 20:56 <viric> Do you think this may work?
2012-04-16 20:56 <viric> http://www.repuestosfuentes.es/product.php?id_product=194
2012-04-16 20:56 <viric> sounds very cheap
2012-04-16 20:56 <kristianpaul> wpwrak: ;)
2012-04-16 20:56 <viric> looks like wanting only usbhost
2012-04-16 20:57 <kristianpaul> now i will not travel to argetina and visit wpwrak :D
2012-04-16 20:58 <viric> I don't know if there are limits on unidirectional transmission power.
2012-04-16 20:59 <viric> *legal* limits
2012-04-16 20:59 <viric> it's not that I want to play being Tesla
2012-04-16 21:00 <wpwrak> it doesn't really say what TX power it has, does it ?
2012-04-16 21:00 <kristianpaul> or RX gain limit? ;-)
2012-04-16 21:00 <wpwrak> kristianpaul: afraid or insulted ? :)
2012-04-16 21:01 <viric> 60dBi
2012-04-16 21:01 <viric> I don't know that unit though.
2012-04-16 21:01 <wpwrak> naw, you can make your RX gain as high as you wish
2012-04-16 21:01 <kristianpaul> wpwrak: neither :)
2012-04-16 21:01 <wpwrak> viric: that's the amplification. but what's the input ?
2012-04-16 21:02 <viric> hm no
2012-04-16 21:02 <viric> dbi is the relationship between directional power / omnidirectional power
2012-04-16 21:02 <viric> (just checked)
2012-04-16 21:02 <kristianpaul> wpwrak: may be afraid of ticket costs ... 
2012-04-16 21:02 <kristianpaul> he
2012-04-16 21:03 <viric> it may be the usual 15 or 20dBm
2012-04-16 21:04 <wpwrak> viric: (dBi) provided they got that right :) 60 dB of anything seem suspicious, though
2012-04-16 21:05 <wpwrak> if it's really dBi, that would be a rather narrowly focused directional antenna
2012-04-16 21:06 <wpwrak> maybe it's just dBM, with M = Marketing
2012-04-16 21:07 <viric> haha
2012-04-16 21:07 <viric> yes, it sounds very narrow.
2012-04-16 21:09 <viric> I've really have zero experience with unidirectional antennas
2012-04-16 21:15 <wpwrak> if i understand the concept right, the beam width would have to be around 22 arcseconds for that. still not as good as a decent laser, but close
2012-04-16 21:15 <viric> :)
2012-04-16 21:16 <wpwrak> well, the beam divergence, to be precise
2012-04-16 21:16 <viric> I decided not to engage into such a calculation...
2012-04-16 21:16 <viric> 22 arcseconds is quite narrow ;)
2012-04-16 21:16 <viric> laser at radio freqüency; nice!
2012-04-16 21:17 <wpwrak> you could mount a laser on the antenna to indicate where to place the opposite antenna ...
2012-04-16 21:18 <viric> fair :)
2012-04-16 21:23 <whitequark> I heard that the main reason such laser-antennas aren't produced is because of their marginal usefulness
2012-04-16 21:23 <whitequark> due to them being very hard to position
2012-04-16 21:26 <viric> of lasers at visible spectrum you mean?
2012-04-16 21:26 <viric> I remember seeing them for high speed links between buildings
2012-04-16 21:26 <whitequark> nope, by "laser-antenna" I meant an RF antenna with a very narrow link
2012-04-16 21:26 <viric> ok
2012-04-16 21:27 <viric> as visible spectrum today I saw this http://www.interconnect-ns.co.uk/Laser-Links
2012-04-16 21:27 <whitequark> haha, nice. my classmate once did a simple version of that
2012-04-16 21:28 <whitequark> with a typical chinese laser pointer (it was before those EXTRA BRIGHT green lasers and stuff)
2012-04-16 21:28 <viric> well, I claim it's for visible spectrum, but it does not say that.
2012-04-16 21:28 <whitequark> well it's possible
2012-04-16 21:28 <whitequark> even with a chinese pointer, that is
2012-04-16 21:28 <wpwrak> whitequark: they may also be a bit inconvenient to carry around. e.g., the arecibo dish seems to have 60 dBi ...
2012-04-16 21:28 <whitequark> of course he only got 120 baud or such, but hey, that was a one-weekend project
2012-04-16 21:29 <viric> good enough
2012-04-16 21:29 <whitequark> wpwrak: :-)
2012-04-16 21:29 <viric> haha
2012-04-16 21:29 <viric> wpwrak: for high enough frequencies, maybe it can fit your pocket.
2012-04-16 21:30 <whitequark> I sometimes wonder about THz spectrum
2012-04-16 21:30 <whitequark> that is, the visible part of THz spectrum
2012-04-16 21:30 <whitequark> it's still "radio" waves, right? it's electromagnetic radiation
2012-04-16 21:30 <whitequark> so, can we use metal antennas to emit it?
2012-04-16 21:30 <whitequark> just imagine an antenna which glows when turned on
2012-04-16 21:31 <viric> yes I wondered about that too
2012-04-16 21:34 <whitequark> it's like LEDs, but other way around
2012-04-16 21:34 <whitequark> we can generate light by shifting electrons back and forth between the orbitals in a LED
2012-04-16 21:35 <whitequark> and we can generate radio waves by doing the same, for example, with hydrogen
2012-04-16 21:35 <whitequark> the freq would be something like 2MHz
2012-04-16 21:35 <whitequark> or 20, I don't quite recall
2012-04-16 21:37 <whitequark> through the antennae for THz waves should be quite small
2012-04-16 21:38 <viric> I can't tell if you understad all this better or worse than me
2012-04-16 21:39 <whitequark> and after a certain wavelength (gamma? xrays?) you'll need to make them smaller than atoms
2012-04-16 21:39 <whitequark> hmm
2012-04-16 21:39 <whitequark> on the other hand, what an antenna is? a structure where a wave can propagate well because of lots of free electrons
2012-04-16 21:41 <whitequark> that is, when we talk about antennae and waves, we don't treat quantums or their relations as separate particles
2012-04-16 21:41 <whitequark> so in a certain sense a single atom can be an antenna
2012-04-16 21:41 <whitequark> no idea if I'm telling nonsense or not :)
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