Shining your lights into someone else's
windows is called light trespass.
Some recent lighting ordinances codify it
as exceeding a certain illumination level,
e.g. 0.1 foot-candles, at the property boundary.
If a 7 billion candlepower source puts
10 percent of its light outside the beam,
it illuminates surfaces a mile away with
2 foot-candles, or 20 times more light
than the full moon.
If the beam is 10 degrees wide,
at 1 mile it gives 10,000 foot-candles,
about the same as the sun.
Maybe a vandal sniper can convince
the developers that this little Art Deco
restoration project is not worth the cost
of perpetual replacement.
I saw the play 14 years ago,
but the Turing character was so vivid
that it seems like last week.
His pre-suicide monologue compared
his own fatal apple to Snow White's.
The computer section of the
Smithsonian Museum of History and Technology
may still have a video clip of the
"Can machines think?" monologue.
Since the same actor led the fundraising
for the statue, I wonder which came first:
playing the role, or caring about Turing.
IP over Avian Carriers is specified by
RFC 1149,
updated by
RFC 2549.
The Bergen LUG made a
prototype implementation,
which/.
covered
last April.
Ping time was about an hour,
with 50% packet loss.
That's what the trigraphs are for.
Just double-tap the question mark,
consult a
cheat sheet
for the third character,
and hope your compiler knows
what to do with it.
Here is
ESO's
own press release.
They used Astrovirtel to explore data going back 18 years, and the orbit was calculated by
a German amateur! In a/.
interview last year, Chris McKinstry
predicted such contributions.
The
Deep
Ecliptic Survey by Millis et al is finding
Kuiper Belt objects by the dozen.
You mean where he was at Los Alamos
on the Manhattan Project, and he figured out
how to open the combination locks on other
people's desks? What a great story.
I especially liked his interaction with the
house locksmith.
Some good players can tell the difference between
computer and human styles of play.
Ask the Freechess admins to set the Computer
flag on your account so it's legit and they
can't complain.
It might be amusing to see how your ZX stacks up
in one of the weekly tournaments.
Maybe they could contest pending patent applications on grounds of obviousness,
based on the inventions the computer
managed to duplicate.
Trouble is, their investors probably wouldn't
support such an agenda.
Go out around 4am any clear night this week.
Don't worry about the peak of the shower.
Keep your unaided eyes open and be very patient.
Since you're new at this and close to the city,
consider 5 meteors per hour a success.
In the evening this month, the bright orange "star" in the south is Mars.
The dimmer one to its right is Antares.
Use a
sky map
to identify whatever else you can see.
Sky and Telescope has a good general
article
for beginners.
Leonid stream details
on
Meteor Showers
·
· Score: 4, Informative
Why should the 2001 Leonids be special?
David Asher at Armagh Observatory has
an
explanation and plots
that answer my question.
He and Robert McNaught in Australia have
calculated the orbits of debris streams ejected
during many past apparitions of the comet.
The outer planets perturb each stream differently.
In 2001 Australia and Asia should get 15000
meteors per hour from the combined 1866 and 1699
streams.
The Americas should get 2500 per hour
from the 1767 stream.
The 1966 storm was a direct hit on the
relatively fresh 1899 stream.
They think the numerous bright Leonids seen in
1998 may have been ejected in 1333.
the Leonids that peak November 18th...
are expected to briefly peak at around
15,000/hour
Ever since I read about the Leonid storms of 1933 and 1966, I've been waiting to see the next
one.
I saw a few Leonids in 1998 and 99 but nothing
to write home about.
Weather was unfavorable in 2000.
Why should the 2001 Leonids be special?
I still like the Geminids (Dec 13) the best. Unlike other showers, the radiant is high in the sky well before midnight. A last quarter moon
hinders predawn viewing of this year's
Perseids.
The worst, it seems to me, are large car dealerships.
IDA
also likes to talk about gas stations.
Some are more brightly lit at night than
most offices are during the day!
It's as if each gas station feels a need to
light itself more brightly than its neighbors,
assuming a correlation between foot-candles
and sales revenue.
I think I will start boycotting the worst
offenders just to be contrary.
It's a false-color image.
The sky brightness just happens to cross the
threshold between "blue" and
"green" there.
The actual difference probably isn't as dramatic
as it looks.
I had AT&T@Home in the fall of 1999.
During that time, home.com got onto the
MAPS RBL
for failing to shut down open SMTP relays.
That got their attention!
To demonstrate good faith to MAPS,
they conducted a campaign of probing
customer machines on port 25 and sending
nastygrams to people running servers.
Their response to the present incident makes
much more sense.
I signed on to Megapath when Northpoint was still
alive. Fortunately, only 11 days after the Northpoint shutdown, they had me back online with Covad.
Unfortunately, my latency increased by 100ms
because they had to route my traffic through
California.
I asked about getting better routing.
They answered: we've already ordered it,
no idea when it'll be ready, ask again later.
Now with Rhythms bankrupt and Covad planning to file, it seems Megapath will have their
hands full again.
Does Speakeasy have an IP gateway near Detroit?
Oops, I should be asking this on dslreports.com.
911 dispatchers in Anoka, Minnesota, received a
call from a woman who said she was hanging from
her ceiling by a punch bowl. Paramedics
learned that she had been polishing the
sterling silver bowl with a fluoride toothpaste.
Physicists at the University of Minnesota
speculate that a thin layer of superconducting
material may have formed between the toothpaste
and the silver, and that a nearby television set
could have induced a magnetic field which caused
the bowl to levitate.
I have an improvement to the JSP code cited in
the article. It uses a highly scalable
thread scheduling algorithm and is 100%
compatible with the J2EE specification.
In
"Graph structure in the web,"
Kumar et al. divide 200 million web pages
into four categories of roughly equal size:
The first piece is a central core, all of whose pages can reach one another along directed hyperlinks -- this "giant strongly connected component" (SCC) is at the heart of the web. The second and third pieces are called IN and OUT. IN consists of pages that can reach the SCC, but cannot be reached from it - possibly new sites that people have not yet discovered and linked to. OUT consists of pages that are accessible from the SCC, but do not link back to it, such as corporate websites that contain only internal links. Finally, the TENDRILS contain pages that cannot reach the SCC, and cannot be reached from the SCC.
when does a telescope that powerfull such that nearby stars aren't point sources anymore?
I am not an astronomer, so take the following
with a meteoroid the size of a grain of salt.
Our own Sun has an apparent diameter of 30 arcmin at 1 AU.
From Alpha Centauri, its apparent diameter
would be about 0.006 arcsec.
Neglecting the atmosphere, a 100m telescope
could resolve a double star with apparent
separation of 0.001 arcsec.
Unfortunately the atmosphere rarely permits
resolution better than 0.5 arcsec.
Adaptive optics might improve it to 0.1 arcsec.
Now if we use interferometry, e.g. with the twin
10m Keck telescopes, we can get synthetic resolution equivalent to a single mirror as wide
as the separation between the two.
I think the 100m telescope's biggest benefit is
light-gathering power.
Slashdot Mirror
Shining your lights into someone else's windows is called light trespass. Some recent lighting ordinances codify it as exceeding a certain illumination level, e.g. 0.1 foot-candles, at the property boundary. If a 7 billion candlepower source puts 10 percent of its light outside the beam, it illuminates surfaces a mile away with 2 foot-candles, or 20 times more light than the full moon. If the beam is 10 degrees wide, at 1 mile it gives 10,000 foot-candles, about the same as the sun. Maybe a vandal sniper can convince the developers that this little Art Deco restoration project is not worth the cost of perpetual replacement.
I saw the play 14 years ago, but the Turing character was so vivid that it seems like last week. His pre-suicide monologue compared his own fatal apple to Snow White's. The computer section of the Smithsonian Museum of History and Technology may still have a video clip of the "Can machines think?" monologue. Since the same actor led the fundraising for the statue, I wonder which came first: playing the role, or caring about Turing.
Where is that TCP/IP carrier pigeon again?
IP over Avian Carriers is specified by RFC 1149, updated by RFC 2549. The Bergen LUG made a prototype implementation, which /.
covered
last April.
Ping time was about an hour,
with 50% packet loss.
From the end of the article:
That would be an improvement, yes?
That's what the trigraphs are for. Just double-tap the question mark, consult a cheat sheet for the third character, and hope your compiler knows what to do with it.
The Deep Ecliptic Survey by Millis et al is finding Kuiper Belt objects by the dozen.
You mean where he was at Los Alamos on the Manhattan Project, and he figured out how to open the combination locks on other people's desks? What a great story. I especially liked his interaction with the house locksmith.
Some good players can tell the difference between computer and human styles of play. Ask the Freechess admins to set the Computer flag on your account so it's legit and they can't complain. It might be amusing to see how your ZX stacks up in one of the weekly tournaments.
Maybe they could contest pending patent applications on grounds of obviousness, based on the inventions the computer managed to duplicate. Trouble is, their investors probably wouldn't support such an agenda.
Go out around 4am any clear night this week. Don't worry about the peak of the shower. Keep your unaided eyes open and be very patient. Since you're new at this and close to the city, consider 5 meteors per hour a success.
In the evening this month, the bright orange "star" in the south is Mars. The dimmer one to its right is Antares. Use a sky map to identify whatever else you can see. Sky and Telescope has a good general article for beginners.
David Asher at Armagh Observatory has an explanation and plots that answer my question. He and Robert McNaught in Australia have calculated the orbits of debris streams ejected during many past apparitions of the comet. The outer planets perturb each stream differently. In 2001 Australia and Asia should get 15000 meteors per hour from the combined 1866 and 1699 streams. The Americas should get 2500 per hour from the 1767 stream. The 1966 storm was a direct hit on the relatively fresh 1899 stream. They think the numerous bright Leonids seen in 1998 may have been ejected in 1333.
the Leonids that peak November 18th ...
are expected to briefly peak at around
15,000/hour
Ever since I read about the Leonid storms of 1933 and 1966, I've been waiting to see the next one. I saw a few Leonids in 1998 and 99 but nothing to write home about. Weather was unfavorable in 2000. Why should the 2001 Leonids be special?
I still like the Geminids (Dec 13) the best. Unlike other showers, the radiant is high in the sky well before midnight. A last quarter moon hinders predawn viewing of this year's Perseids.
The worst, it seems to me, are large car dealerships.
IDA also likes to talk about gas stations. Some are more brightly lit at night than most offices are during the day! It's as if each gas station feels a need to light itself more brightly than its neighbors, assuming a correlation between foot-candles and sales revenue. I think I will start boycotting the worst offenders just to be contrary.
It's a false-color image. The sky brightness just happens to cross the threshold between "blue" and "green" there. The actual difference probably isn't as dramatic as it looks.
I had AT&T@Home in the fall of 1999. During that time, home.com got onto the MAPS RBL for failing to shut down open SMTP relays. That got their attention! To demonstrate good faith to MAPS, they conducted a campaign of probing customer machines on port 25 and sending nastygrams to people running servers. Their response to the present incident makes much more sense.
I signed on to Megapath when Northpoint was still alive. Fortunately, only 11 days after the Northpoint shutdown, they had me back online with Covad. Unfortunately, my latency increased by 100ms because they had to route my traffic through California. I asked about getting better routing. They answered: we've already ordered it, no idea when it'll be ready, ask again later. Now with Rhythms bankrupt and Covad planning to file, it seems Megapath will have their hands full again. Does Speakeasy have an IP gateway near Detroit? Oops, I should be asking this on dslreports.com.
OK, you caught me. The TV's electromagnetic field also oscillates at several kHz.
911 dispatchers in Anoka, Minnesota, received a call from a woman who said she was hanging from her ceiling by a punch bowl. Paramedics learned that she had been polishing the sterling silver bowl with a fluoride toothpaste. Physicists at the University of Minnesota speculate that a thin layer of superconducting material may have formed between the toothpaste and the silver, and that a nearby television set could have induced a magnetic field which caused the bowl to levitate.
Tim Mann, author of XBoard and WinBoard, has published Deep Thought's evaluation function tuning program on behalf of developer Andreas Nowatzyk.
I have an improvement to the JSP code cited in the article. It uses a highly scalable thread scheduling algorithm and is 100% compatible with the J2EE specification.
Try a servlet that does steps 1-4 in a background thread, and step 5 on demand.
In "Graph structure in the web," Kumar et al. divide 200 million web pages into four categories of roughly equal size:
So is your home page an innie or an outie?
when does a telescope that powerfull such that nearby stars aren't point sources anymore?
I am not an astronomer, so take the following with a meteoroid the size of a grain of salt. Our own Sun has an apparent diameter of 30 arcmin at 1 AU. From Alpha Centauri, its apparent diameter would be about 0.006 arcsec. Neglecting the atmosphere, a 100m telescope could resolve a double star with apparent separation of 0.001 arcsec. Unfortunately the atmosphere rarely permits resolution better than 0.5 arcsec. Adaptive optics might improve it to 0.1 arcsec. Now if we use interferometry, e.g. with the twin 10m Keck telescopes, we can get synthetic resolution equivalent to a single mirror as wide as the separation between the two. I think the 100m telescope's biggest benefit is light-gathering power.