You don't need a telescope and it is not really astronomy but... ISS is very bright. Iridium flares are interesting. It is a whole world to explore and think about. You can see first satellite watchers in 'October Sky/Rocket boys'; a very nice film about science education in the US after the Sputnik launch.
I don't know what it is (I still use Firefox 1.5 on an old Ubuntu 6.06 (Dapper Drake) and/. is so slow that I hesitate to visit it. (There is always a busy script I have to stop, GoogleAds or something takes an eternity to load; not to speak about the FLASH adds... Unfortunately, RSS does not help as it is so full of advertizing that the text is difficult to find. I thing I will ditch Slashdot and digg elsewhere.
See also the article of IEEE's Spectrum : "Titan calling"that explains that the problem was not just Doppler effect on frequency, but a change in data rate, i.e. the duration of a bit, that mattered.
RadioMobile uses SRTM altitude data (~off topic)
on
Open Maps?
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· Score: 1
RadioMobile
allows you to draw terrain elevation maps. Its primary use is to predict radio propagation, but one can use it for other purposes...
With such a bandwith, I would consider teleportation.
SF novel "Garden of the Moon" (P. Boulle)
on
One-Way Ticket to Mars?
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· Score: 2, Informative
There is a SF novel on the subject by Pierre Boulle ("The Bridge of the River Kwai", "The Planet of the Apes"). The novel is "The Garden of the Moon" (Le jardin de Kanashima"). It was written in the sixties. It is about the rush to the Moon : Americans, Russians and Chineses compete to be the first on the Moon. The Chineses opt for a much more easy one way ticket and win the race.
Well, it's a little heavier than a wristwatch;-), but it is also a temperature powered clock manufactured since the late 1920's (history of the Atmos clock).
I do not know what they are using (as far as I know, unamplified 802.11b is 30 mW).
But, if you can see the other point (clear line of sight), 12 Km can be done with standard WiFi (802.11b) cards with reasonnable antennas (paraboles, horns, SlottedWaveGuide,... )
12 Km is a little bit out of range for tin cans, but we achieved 9.5 km with...CardboardHorns;-)
Yet a lighter version : the TetraPak horn is not bad.
But, to be sure, use paraboles like in one of the first long shots.
...And remember: You need 6 dB to double the distance (whatever it is).
Look at SeattleWireless' HowDoesThisWikiLookLike there are few pages with a lot of references to or from other pages, and many pages with few references. It seems to follow a 'power law' too(~ 'scale free').
So, the 'inside' of the web seems to follow the same rules. It is particulary interresting with wikis because of the unplanned, distributed growth (like the Internet).
As the belgian provider, where the pictures are, seems to be down. You can also see the pictures in ReseauCitoyen.be's TopologieDuWiki
I thing it would be a good idea to have a discussion on/. on the Wiki phenomenon (sites everybody can contribute to, like WikiPedia.com ( more than 95,000 pages!).
There are small personal windgenerators (cheap?) used for yachting, caravaning,... (<100 watts) (by example Rutlands)
There are small watergenerators (low head (2') or low stream (10gal/min)) like these from microhydropower.
Beware of car generators to produce electricity : they need high rpm's and are efficient (to be checked, I am not sure) when producing hundred's of watts (tens of amps at 12 volts).
I did not find URLs for hand-powered military transmitters (but would be interested to get one).
? See also 'human powered flight' (Gossamer Condor), there are also submarines I think;-) Don't exercice too much, keep some blood for the brains.
...weaving the web (connecting things, so other people can find too)
However, I am not at ease with all that Simputer stuff. There is much hype, but what's behind?
It looks too closed to succeed. You have to licence a 'design' which is not much more than an Arm-chip Application Note. All seems one-way (there seems to be no forum, no call for participation, just a couple of guys trying to exploit the (nice) idea of 'a computer for the poor', no SourceForge community, nand OpenHardware one or the likes.
If you look at the Google/Open_Source/Simputer directory, it is just hype, there is no forum, no CVS repository. When you look at Simputer.org, there is no activity (the pages are ages old) and it links you to similarily dead 'commercial' pages (where people don't answer when you ask for information).
Why not just start from a LART or one of the existingLinuxDevices?
Don't get me wrong. I'd be pleased to see a Simputer succeeds, but when you start by asking money for a 'class-room design' with no community support, I am not sure that 'a computer for the poor' is more than an empty dream.
Re:Hopefully this will mean more free-space optics
on
Wireless Congestion
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· Score: 1
I did not read all the comments yet, but I did not found the word wiki in them... This is a powerful technology for building something together. It is sometimes difficult to keep the structure sound but some are used with success in wireless community networks
seattlewireless is one, wireless-fr is another one (in french).
General info about wikis can be found on Google directory/Wiki
A lot of implementations now exist (I prefer phpwiki), the original one is on c2.com
Some of them, like TuxScreen allow you to protect modifs with a login.
Slashdot Mirror
See also TRAPPIST to Scout the Sky and Uncover Exoplanets and Comets. (TRAnsiting Planets and PlanetesImals Small Telescope) A robotic .6 meter telescope at ESO’s La Silla Observatory on the outskirts of the Atacama Desert in Chile.
Their atmospheric entry is expected and recorded.
See also Integrated library system
Businesses use Customer relationship management systems. These tools also provide statistics.
Thank you!
I don't know what it is (I still use Firefox 1.5 on an old Ubuntu 6.06 (Dapper Drake) and /. is so slow that I hesitate to visit it. (There is always a busy script I have to stop, GoogleAds or something takes an eternity to load; not to speak about the FLASH adds... Unfortunately, RSS does not help as it is so full of advertizing that the text is difficult to find. I thing I will ditch Slashdot and digg elsewhere.
I don't understand the '0' score... using gettext() is a good idea (unless you come with a better mecanism for internationalization).
from http://ubuntu.mirrors.skynet.be/pub/ubuntu.com/rel eases/feisty/MD5SUMS
...in case your server is slow (and your confidence in your torrent low)
;-)
50f3655fbcbdba9746d4b05ad8705b0b *ubuntu-7.04-alternate-amd64.iso
ff0cc7c9ed5157f0ff8c0f2213973f49 *ubuntu-7.04-alternate-i386.iso
a2b159599b69cea51371eee1ec5feda6 *ubuntu-7.04-desktop-amd64.iso
e296e3468358789904097fc8df29609a *ubuntu-7.04-desktop-i386.iso
8a1099f5fa8eaf4ee295bf0087c8b03a *ubuntu-7.04-server-amd64.iso
cf462501e2dc1b82b96dfc497a0404a2 *ubuntu-7.04-server-i386.iso
e016f1e3322848af98d01eae2688568c *ubuntu-7.04-server-sparc.iso
Of course, you have to trust these...
xof
See also the article of IEEE's Spectrum : "Titan calling"that explains that the problem was not just Doppler effect on frequency, but a change in data rate, i.e. the duration of a bit, that mattered.
RadioMobile allows you to draw terrain elevation maps. Its primary use is to predict radio propagation, but one can use it for other purposes...
See also http://nepalwireless.net/ as indicated on the BBC page.
There is a prediction program on source-forge : http://iss-transit.sourceforge.net/
You can even subscribe to e-mail transit alerts.
With such a bandwith, I would consider teleportation.
There is a SF novel on the subject by Pierre Boulle ("The Bridge of the River Kwai", "The Planet of the Apes"). The novel is "The Garden of the Moon" (Le jardin de Kanashima"). It was written in the sixties. It is about the rush to the Moon : Americans, Russians and Chineses compete to be the first on the Moon. The Chineses opt for a much more easy one way ticket and win the race.
I have no idea. But 20:30 - 15:00 (18.5 hours) seems (to me at least) a very short time to handle such a delicate analysis in a war zone.
See also Google('atmos clock').
;-), but it is also a temperature powered clock manufactured since the late 1920's (history of the Atmos clock).
Well, it's a little heavier than a wristwatch
I do not know what they are using (as far as I know, unamplified 802.11b is 30 mW).
...CardboardHorns ;-)
...And remember: You need 6 dB to double the distance (whatever it is).
But, if you can see the other point (clear line of sight), 12 Km can be done with standard WiFi (802.11b) cards with reasonnable antennas (paraboles, horns, SlottedWaveGuide,... )
12 Km is a little bit out of range for tin cans, but we achieved 9.5 km with
Yet a lighter version : the TetraPak horn is not bad.
But, to be sure, use paraboles like in one of the first long shots.
Well, slash is good and I am a slashdot addict. But I prefer wikis to build something together.
:-)
...it is another book. ;-)
In "The Wiki Way: Collaboration and Sharing on the Internet", Bo Leuf and Ward Cunningham (c2.com) describe two ways of interacting in a wiki : content pages (as found on wikipedia) and discussion threads (there are many of them on MeatballWiki).
Most wireless communities use wikis. And it is fun!
But, I agree,
Look at SeattleWireless' HowDoesThisWikiLookLike there are few pages with a lot of references to or from other pages, and many pages with few references. It seems to follow a 'power law' too(~ 'scale free').
/. on the Wiki phenomenon (sites everybody can contribute to, like WikiPedia.com ( more than 95,000 pages!).
So, the 'inside' of the web seems to follow the same rules. It is particulary interresting with wikis because of the unplanned, distributed growth (like the Internet).
As the belgian provider, where the pictures are, seems to be down. You can also see the pictures in ReseauCitoyen.be's TopologieDuWiki
I thing it would be a good idea to have a discussion on
I know of only one book on the subject : "The Wiki Way: Collaboration and Sharing on the Internet" by Bo Leuf, Ward Cunningham (of c2.com, creator of the Wiki concept).
If you search Google for 'RecentChanges' (a good marker for wikis (?)), you get a lot of them, more and more (A survey by country domain sept->oct 2002)
There are some scientific papers at GaTech.edu
Beware of car generators to produce electricity : they need high rpm's and are efficient (to be checked, I am not sure) when producing hundred's of watts (tens of amps at 12 volts).
- Slashdot : Crank Up Your Webserver (18jun2001)
- Two days ago : Slashdot : First Wind-up Phone Charger Review (25jul2002)
- mini FAQ on bicycle lights (dynamo=3W)
- How to construct a permanent magnet alternator (this one is for windpower, ~180 watts)
- other homebuilt alternators (~100 watts) (again windpower. ?efficiency)
I did not find URLs for hand-powered military transmitters (but would be interested to get one). ? See also 'human powered flight' (Gossamer Condor), there are also submarines I thinkDon't exercice too much, keep some blood for the brains.
It seems that there is a lot of electricity in India :-)
However, I am not at ease with all that Simputer stuff. There is much hype, but what's behind?
It looks too closed to succeed. You have to licence a 'design' which is not much more than an Arm-chip Application Note. All seems one-way (there seems to be no forum, no call for participation, just a couple of guys trying to exploit the (nice) idea of 'a computer for the poor', no SourceForge community, nand OpenHardware one or the likes. If you look at the Google/Open_Source/Simputer directory, it is just hype, there is no forum, no CVS repository.
When you look at Simputer.org, there is no activity (the pages are ages old) and it links you to similarily dead 'commercial' pages (where people don't answer when you ask for information).
Why not just start from a LART or one of the existing LinuxDevices?
Don't get me wrong. I'd be pleased to see a Simputer succeeds, but when you start by asking money for a 'class-room design' with no community support, I am not sure that 'a computer for the poor' is more than an empty dream.
By searching 'optical link' in .cz on (advanced) Google, I found http://atrey.karlin.mff.cuni.cz/~clock/twibright/r onja/ . /., I found http://slashdot.org/article.pl?sid=01/12/22/143221 1&mode=thread&tid=137
Searching 'ronja' on
I did not read all the comments yet, but I did not found the word wiki in them... This is a powerful technology for building something together. It is sometimes difficult to keep the structure sound but some are used with success in wireless community networks seattlewireless is one, wireless-fr is another one (in french). General info about wikis can be found on Google directory/Wiki A lot of implementations now exist (I prefer phpwiki), the original one is on c2.com Some of them, like TuxScreen allow you to protect modifs with a login.