Under optimal conditions you can do some HF DX'ing using a 100-watt lightbulb for an antenna - At least according to Gordon What's-His-Face, God's Gift to Amateur Radio books
:>
I see no reason why a mile-long array of omnidirectional vertical ground-plane antennas (like for example street lights) couldn't carry for at least a hundred miles, depending on frequency. You could easily get a few thousand if it was low enough to go sky-wave.
Pretending for a second that the source of noise from a plane like this is a point, if you're 8.7 feet away instead of 500, you're 64 times closer and therefore will recieve 4096 (64*64) times the noise energy. 2^12 = 4096, each 3db is a factor of 2, therefore it'll be 3*12+65 = 113db at 8.7 feet. Actually a little bit less since the plane is not a point source, but easily over 100db. This qualifies as 'disturbance of the peace' in most jurisdictions. (hope that math is right - it looked right to me at the time:)
...and he says airpooling is the way of the future. football field-sized runways for VSTOL community-operated planes.
Commuting? Gone. Replaced with Telecommuting. Airliners? Gone. Replaced with airpools. Cars? Gone. Also replaced with airpools.
Bottom line, semipersonal air transportation for the last half of the 21st century.
Give 'Life after Airliners' a read - very interesting stuff.
He claims aircars like this particular one will fail because of factors like fuel consumption (960hp doesn't sip fuel), noise (look at their spec!), pollution (960hp!), and a few other things. Putting over 2400lbs of thrust down over a thrust disk of about 4 square feet total size is *never* efficient.
I tend to trust Burt Rutan's judgement when he talks about efficiency, after all he's the only person on earth to design a plane to fly around the world nonstop without refueling.
Also did anyone notice a significant resemblance between the Podracer in Star Wars: The Phantom Menace and Bob Pond's Pondracer? Which one came first?:)
#3 - Stephen Tweedie posted to linux-kernel recently that he'll have testable journalling code for ext2 in a few weeks. #4 - check out the "fake" utility #6 - get a 64-bit platform #7 - get glibc 2.1 (32-bit UID's)
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No, it's quite a few moderately sized antennas and a couple thousand minutely sized ones.
http://www.oz.net/~rcw/deleted.the.data base
I see no reason why a mile-long array of omnidirectional vertical ground-plane antennas (like for example street lights) couldn't carry for at least a hundred miles, depending on frequency. You could easily get a few thousand if it was low enough to go sky-wave.
You can install debian packages on any machine with tar, gzip, and ar. No dpkg is needed. Try 'ar x file.deb' sometime.
Pretending for a second that the source of noise from a plane like this is a point, if you're 8.7 feet away instead of 500, you're 64 times closer and therefore will recieve 4096 (64*64) times the noise energy. 2^12 = 4096, each 3db is a factor of 2, therefore it'll be 3*12+65 = 113db at 8.7 feet. Actually a little bit less since the plane is not a point source, but easily over 100db. This qualifies as 'disturbance of the peace' in most jurisdictions. (hope that math is right - it looked right to me at the time :)
...and he says airpooling is the way of the future. football field-sized runways for VSTOL community-operated planes.
:)
Commuting? Gone. Replaced with Telecommuting.
Airliners? Gone. Replaced with airpools.
Cars? Gone. Also replaced with airpools.
Bottom line, semipersonal air transportation for the last half of the 21st century.
Give 'Life after Airliners' a read - very interesting stuff.
He claims aircars like this particular one will fail because of factors like fuel consumption (960hp doesn't sip fuel), noise (look at their spec!), pollution (960hp!), and a few other things. Putting over 2400lbs of thrust down over a thrust disk of about 4 square feet total size is *never* efficient.
I tend to trust Burt Rutan's judgement when he talks about efficiency, after all he's the only person on earth to design a plane to fly around the world nonstop without refueling.
Also did anyone notice a significant resemblance between the Podracer in Star Wars: The Phantom Menace and Bob Pond's Pondracer? Which one came first?
apt-get install bzip2
#3 - Stephen Tweedie posted to linux-kernel recently that he'll have testable journalling code for ext2 in a few weeks.
#4 - check out the "fake" utility
#6 - get a 64-bit platform
#7 - get glibc 2.1 (32-bit UID's)