Also: Power requirements (covered vaguely in TFA), efficiency, and thermal requirements, since this is an electric ion thruster. There are a lot of SEP designs, although I don't recall any others quite this small.
What I also didn't see in the article is whether they have or need some sort of MEMs equivalent of valves... will the ionic fluid boil off in vacuum without the voltage applied? At what rate? Does the ionic fluid degrade with storage, and will it clog the capillaries like an inkjet printer? How big are the pores, and are they sensitive to cosmic radiation like silicon?
Before gas stations, you bought gasoline at the hardware store in tins. Later on they added self-measuring pumps, and eventually they evolved into separate establishments. Also remember that roads were largely local during the early part of the automobile era, and it took a long time to develop a decent road network..
Atmel did something similar a few years back with their FPSLIC, but the tools and parts were very expensive and it's more or less dead. It looks like the Zynq has a similar problem... the lowest end part is $15+ for high volume sales.
At least for the laptops. There's a lot more spectrum there, and it's much less saturated. Probably not an option for the phones, though. Also, wired ethernet when possible.
Yes, in Life+70 countries that can easily happen. In the US, anything published before 1923 is in the public domain. Anything from 1923 onward requires a lot of research, which sometimes leads to mistakes (as in the Rule 6 clearance referenced above, "The Escape", aka "Brainwave"). Actually, it's not so much a mistake as an oddity in the law. The first publication, as a serial, was not renewed. Only the later republication as "Brainwave" was renewed.
The current highest resolution commercial satellite imagery is 60 cm/pixel or so, from QuickBird-2. Eros B1 does 70 cm; IKONOS, OrbView-3 and some others do 1m. These are all nadir resolutions, of course. If you image further from the satellite path, your resolution suffers accordingly.
There are plans for 40 and 50 cm birds (GeoEye-1, Worldview-1/2) but they haven't been launched yet.
If you're working with commercial 5 cm data, you're working with aerial photography, not satellite imagery, and 5 cm is on the high end for that. Most users around here consider 30-cm (1 foot) data as high end.
If you meant 5m satellite data, that's pretty common.
The very existence of widespread grammar and spelling errors (e.g., loose/lose, would of/would have, pluralizing with apostrophes) demonstrates to me that most people don't read very much if at all. Now good spelling is not always correlated with being well-read (one of the smartest and most well-read people, more well-read than I, that I know is a horrible speller), but when I see people claiming that they get all the useful information they need from sites like Digg or/., I can only conclude that those kinds of people are doomed to communicate at a highly illiterate level in perpetuity. Even if you were to read extensively from common magazines and newspapers, you will not be exposed to anything more than a very fundamental (read: 6th grade) level of proficiency with the language.
Eh? Have you actually read original copies/facimilies from books/periodicals back then? Grammar and spelling errors (even excluding the lengthy period before spellings were standardized) are widespread. The mistakes may be different than the ones you see in our electronic spell checker/typesetting era, but they are there. Read through pretty much any book running through Distributed Proofreaders, and you'll find mistakes flagged. Sometimes they are left intact, with notes, sometimes are corrected with a transcriber's note, but they are there in the originals.
Not to mention you are cherrypicking the better examples from various eras.. Lincoln was known (among other things) for his rhetoric. How do modern speeches compare to, say, James Garfield? Or Grant?
That's actually not all that unusual.. for whatever reason the composer or arranger may choose to use those accidentals on sheet music. (Odd key, whatever)
There is a classic science fiction story by John Pierce (Invariant, 1944, Astounding) wherein a man figures out how to make himself immortal.. but loses the capability to form new memories. Hasn't been reprinted in a while, but a very good story. You can find it in the first Astounding Anthology, amongst other collections.
Shudder. No.. even the best ebook reader in the world won't help Thomas Covenant.* Almost as painful to read as the books chosen for English Lit classes.
*Yes, yes.. I know some people claim to like that series. They're lying, all of them.:)
Right.. and on several of the players that I tried Ray on, seamless branching wasn't. There was a noticable pause at every branch while the player found the video.
There's these nifty things called Switch mode power supplies. Most electronic devices use it nowadays. Or if you still want to be lazy, use a linear regulator. A divider network is a terrible voltage regulator.
Also, IIRC, standard Molex connections are +12, gnd, gnd, +5. Only motherboards / expansion cards see the negative voltages.
Not true. The swing of a pendulum does not form a true cycloid (and thus the period is not independent of amplitude). It does, however, approximate it very closely for short arcs.
Huygens played with using "cheeks" to modify a string pendulum into something closer to cycloid.. it turned out to be easier to use an escapement (the anchor escapement, for example) that works with smaller pendulum arcs.
The only advantage I see to an internal datalogger is you can grab it after the SSL layer decrypts it. If you have adequate encryption, a wiretap is only going to yield traffic analysis, not the full communication.
Re:I'll stick to my LaserDiscs....
on
Star Wars on DVD
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· Score: 1
However, the newer revision laserdisc editions _did_ contain an LPCM track, which would be available unaltered via spdif on some players.
A little software, some encoding, and you can produce a very good AC3 track out of it. Not 5.1, but you can reencode in AC3 if your decoder doesn't decode the old Dolby Surround.
Re:I'll stick to my LaserDiscs....
on
Star Wars on DVD
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· Score: 1
Re:I'll stick to my LaserDiscs....
on
Star Wars on DVD
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· Score: 1
Depends on the player. Only ones I've seen demodulate the AC3 and provide an spdif output. I think they were pioneers.
You're right. If it's the raw RF output, it's a lot more expensive. Once it's demodulated the ac3 is delivered by SP-DIF, either RCA or optical, and my previous post applies.
Re:I'll stick to my LaserDiscs....
on
Star Wars on DVD
·
· Score: 1
Converting RCA spdif to optical is trivial.. the most basic converters are more or less just an opamp and LED. You can occasionally get away with just an LED depending on the driving circuit, but I'd use at least a inline current limiting resistor.
Also, many soundcards with an optical SP/DIF input also have an internal header for an RCA (spdif) connection. In additional, the digital CD-ROM connection uses a variation of SP/DIF (SP/DIF with a 0-5v signal level.)
Slashdot Mirror
Also: Power requirements (covered vaguely in TFA), efficiency, and thermal requirements, since this is an electric ion thruster. There are a lot of SEP designs, although I don't recall any others quite this small.
What I also didn't see in the article is whether they have or need some sort of MEMs equivalent of valves... will the ionic fluid boil off in vacuum without the voltage applied? At what rate? Does the ionic fluid degrade with storage, and will it clog the capillaries like an inkjet printer? How big are the pores, and are they sensitive to cosmic radiation like silicon?
-R C
Forgot to log in. Ah well.
-R C
Before gas stations, you bought gasoline at the hardware store in tins. Later on they added self-measuring pumps, and eventually they evolved into separate establishments. Also remember that roads were largely local during the early part of the automobile era, and it took a long time to develop a decent road network..
Atmel did something similar a few years back with their FPSLIC, but the tools and parts were very expensive and it's more or less dead. It looks like the Zynq has a similar problem... the lowest end part is $15+ for high volume sales.
At least for the laptops. There's a lot more spectrum there, and it's much less saturated. Probably not an option for the phones, though. Also, wired ethernet when possible.
Yes, in Life+70 countries that can easily happen. In the US, anything published before 1923 is in the public domain. Anything from 1923 onward requires a lot of research, which sometimes leads to mistakes (as in the Rule 6 clearance referenced above, "The Escape", aka "Brainwave"). Actually, it's not so much a mistake as an oddity in the law. The first publication, as a serial, was not renewed. Only the later republication as "Brainwave" was renewed.
Not quite. USB is a half-duplex master/slave interface over a single twisted pair (Plus another pair for power), and uses differential NRZI signaling.
R C
The current highest resolution commercial satellite imagery is 60 cm/pixel or so, from QuickBird-2. Eros B1 does 70 cm; IKONOS, OrbView-3 and some others do 1m. These are all nadir resolutions, of course. If you image further from the satellite path, your resolution suffers accordingly.
There are plans for 40 and 50 cm birds (GeoEye-1, Worldview-1/2) but they haven't been launched yet.
If you're working with commercial 5 cm data, you're working with aerial photography, not satellite imagery, and 5 cm is on the high end for that. Most users around here consider 30-cm (1 foot) data as high end.
If you meant 5m satellite data, that's pretty common.
Eh? Have you actually read original copies/facimilies from books/periodicals back then? Grammar and spelling errors (even excluding the lengthy period before spellings were standardized) are widespread. The mistakes may be different than the ones you see in our electronic spell checker/typesetting era, but they are there. Read through pretty much any book running through Distributed Proofreaders, and you'll find mistakes flagged. Sometimes they are left intact, with notes, sometimes are corrected with a transcriber's note, but they are there in the originals.
Not to mention you are cherrypicking the better examples from various eras.. Lincoln was known (among other things) for his rhetoric. How do modern speeches compare to, say, James Garfield? Or Grant?
That's actually not all that unusual.. for whatever reason the composer or arranger may choose to use those accidentals on sheet music. (Odd key, whatever)
http://www.musicarrangers.com/star-theory/p05.htm
http://www.musicarrangers.com/star-theory/p17.htm
There is a classic science fiction story by John Pierce (Invariant, 1944, Astounding) wherein a man figures out how to make himself immortal.. but loses the capability to form new memories. Hasn't been reprinted in a while, but a very good story. You can find it in the first Astounding Anthology, amongst other collections.
Shudder. No.. even the best ebook reader in the world won't help Thomas Covenant.* Almost as painful to read as the books chosen for English Lit classes.
:)
*Yes, yes.. I know some people claim to like that series. They're lying, all of them.
Ah hah.. now we have figured out why all the people in the future wear metallic clothing.. it's to block the signal to the GPS antennas!
Right.. and on several of the players that I tried Ray on, seamless branching wasn't. There was a noticable pause at every branch while the player found the video.
R C
There's these nifty things called Switch mode power supplies. Most electronic devices use it nowadays. Or if you still want to be lazy, use a linear regulator. A divider network is a terrible voltage regulator.
Also, IIRC, standard Molex connections are +12, gnd, gnd, +5. Only motherboards / expansion cards see the negative voltages.
Err.. are you trying to say that Trek respects it's own backstory? /me falls down laughing.
This is a variation between British and American english. (Whether a collective noun is considered plural or not.)
/ /englishplus.com/grammar/00000193.htm
http://www.bartleby.com/64/C001/020.html
http:
(and many other sites.)
The quoted usage is valid, if applied consistent.
R C
Not true. The swing of a pendulum does not form a true cycloid (and thus the period is not independent of amplitude). It does, however, approximate it very closely for short arcs.
Huygens played with using "cheeks" to modify a string pendulum into something closer to cycloid.. it turned out to be easier to use an escapement (the anchor escapement, for example) that works with smaller pendulum arcs.
Not all of them.. 1 out of 4 in my area.
The only advantage I see to an internal datalogger is you can grab it after the SSL layer decrypts it. If you have adequate encryption, a wiretap is only going to yield traffic analysis, not the full communication.
The dex is way, way too high. Have you ever seen one try to pick something up? Or even to turn around? Try 5 or 6.
Our dog hasn't gotten up the courage to actually touch it, but she will bark at it for hours on end.
Try transfering gzips in binary mode, not ascii.
However, the newer revision laserdisc editions _did_ contain an LPCM track, which would be available unaltered via spdif on some players.
A little software, some encoding, and you can produce a very good AC3 track out of it. Not 5.1, but you can reencode in AC3 if your decoder doesn't decode the old Dolby Surround.
This is old hat, of course.
It was discussed about a month ago, here.
Depends on the player. Only ones I've seen demodulate the AC3 and provide an spdif output. I think they were pioneers.
You're right. If it's the raw RF output, it's a lot more expensive. Once it's demodulated the ac3 is delivered by SP-DIF, either RCA or optical, and my previous post applies.
Converting RCA spdif to optical is trivial.. the most basic converters are more or less just an opamp and LED. You can occasionally get away with just an LED depending on the driving circuit, but I'd use at least a inline current limiting resistor.
Also, many soundcards with an optical SP/DIF input also have an internal header for an RCA (spdif) connection. In additional, the digital CD-ROM connection uses a variation of SP/DIF (SP/DIF with a 0-5v signal level.)
Here's a commerical one:
here