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Dinosaurs May Have Been Neither Warm-blooded Nor Cold-Blooded

art6217 Birds (54 comments)

Sounds likely, if birds are their warm-blooded descendants.

about a month and a half ago
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Google Unveils Project Tango 3D Tablet DevKit Powered By NVIDIA's Tegra K1

art6217 Re:1024 fits in 10 bits. (54 comments)

Did you consider upgrade?

about 2 months ago
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This 1981 BYTE Magazine Cover Explains Why We're So Bad At Tech Predictions

art6217 It is art (276 comments)

It is art, no prediction. It is obvious from the first glance. And the article confirms it:

If you're tempted to assume that the image was actually a serious depiction of what a future wrist computer might look like-well, no. Inside the magazine, which only had a brief editiorial about future computers, the editors pointed out that it wasn't a coincidence that it happened to be the April issue of Byte.

about 3 months ago
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Three New Exoplanets Seen In Direct Photographs

art6217 Surface features? (43 comments)

Is the shape of these dots representing merely the telescope's own artifacts? Will we be able to see clouds/continents of the largest exoplanets, if Phil Plait's prediction, that seeing Earth--sized planets is only a few years away, turns out to be true?

about 8 months ago
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Norwegian Town Using Sun-Tracking Mirrors To Light Up Dark Winter Days

art6217 Re:Why not a balloon (143 comments)

It had to be "the shape of a hat" -- i. e. with a flat mirroring surface on the bottom side, and with a gas container on the top side.

1 year,4 days
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Norwegian Town Using Sun-Tracking Mirrors To Light Up Dark Winter Days

art6217 Re:Why not a balloon (143 comments)

moving around

e.g. with a special, light harness, tied to three distant points on the surface.

1 year,4 days
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Norwegian Town Using Sun-Tracking Mirrors To Light Up Dark Winter Days

art6217 Re:Why not a balloon (143 comments)

a) to stabilize such a design in the air and

I guess that simply moving around/rotating around the vertical axis might be quite enough.

b) what happens if the wind goes

Fun! It would be mostly for fun anyway.

1 year,4 days
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Norwegian Town Using Sun-Tracking Mirrors To Light Up Dark Winter Days

art6217 Why not a balloon (143 comments)

Why not a ballon, of the size of a giant hat, make of a tinfoil? If would need to be tilted somewhat, and turn itself towards the sun -- easy in the case of a ballon. Would not it be much cheaper? Of course, tinfoil does not have the directionality of a glass mirror, but make the hat big enough and it would not be a problem, and even be a feature -- the more ambient light would not decrease the iris size so much, and thus a human would perceive the lighted area as even more bright.

1 year,4 days
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Mars Explorers Face Huge Radiation Problem

art6217 Oases of magnetism (283 comments)

http://www.universetoday.com/30538/was-mars-magnetic-field-blasted-away/

What is the protection at 180E60S, if compared to Earth?

about a year ago
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Nearby Solar System Looks Like Home

art6217 Re:Titius-Bode law (62 comments)

This is not only about fitting a random formula. A set of such formulas would give more information on the rule in question:

  • is this just an exponential fit?
  • or is this an exponential fit i_1 + i_2 * i_3^m, that tends to contain small integers i_j?
  • or does it tend to be exactly an exponential fit a = 4 + 3 * 2^m?

about a year and a half ago
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Nearby Solar System Looks Like Home

art6217 Re:Titius-Bode law (62 comments)

In particular, is there some known planetary system, where the rule is expressed using low integers, like 4 + 3 * 2^m in the case of Solar System, and not just by any exponential fit?

about a year and a half ago
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Nearby Solar System Looks Like Home

art6217 Titius-Bode law (62 comments)

I wonder, if the inner planets of some other systems follow that hypothesis as closely as in the case of the Solar System. Is there any data already about that?

about a year and a half ago
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Scientists Develop Chocolate That Won't Melt At High Temperatures

art6217 It may actually be more delicious if in the Arctic (161 comments)

They say, that their chocolate is going to be good even if it does not melt, as opposed to a "normal chocolate". As chocolate in general does not melt easily on very cold days and thus has taste problems, then perhaps their chocolate will actually taste better in the winter.

about a year and a half ago
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Scientists Develop Chocolate That Won't Melt At High Temperatures

art6217 A gooey surprise... (161 comments)

...is when I try to eat a frozen chocolate on a winter day. It tastes like goo. Can it be, because it does not melt?

about a year and a half ago
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Researchers Create New Cheap, Shatterproof, Plastic Light Bulbs

art6217 Re:I am having a vision of the future... (296 comments)

Pehaps they'll miss the unnatural yellow tint CFLs give, to save on the inefficient red phospor (some of the CFLs with the best light are B on the efficiency scale, because they contain balanced amounts of yellow and red).

More seriously, traditional bulbs give off warmth, which some people understandably like, especially in colder climates. And modern halogens are C on the efficiency scale, not bad given their sun--like light. The trick is to use a special glass cover that returns some of the infra--red band back to the tungsten.

about a year and a half ago
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Hairspray Could Help Us Find Advanced Alien Civilizations

art6217 Re:Inverse square law destroy your argument (211 comments)

Have you ever did any involved mathematical analysis of detecting a slowly drifting 50Hz signal in a background stronger by hundreds of dB? I did not. This is why I would not say "all noise". I just do not know that. Do you?

about a year and a half ago
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Hairspray Could Help Us Find Advanced Alien Civilizations

art6217 Re:Max Tegmark at MIT says no aliens exist... (211 comments)

Do you think that searching for various traits of a planet, for which no known explanation exists, becomes useless just because there is no life on the planet?

about a year and a half ago
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Hairspray Could Help Us Find Advanced Alien Civilizations

art6217 I'd pick streetlighting (211 comments)

gigawatts of radio waves put into space: check
at a wavelength interesting to astronomers: check
low--frequency modulation, common phase: check (think Fourier analysis over months of data to filter out unmodulated light of a nearby star)
characteristic spectral fingerprint of artificial light: check
not limited to a civilisation's "radio window": check

about a year and a half ago
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Unbreakable Crypto: Store a 30-character Password In Your Subconscious Mind

art6217 Re:Another variant (287 comments)

Yes, it's an obvious problem, just like with playing the game the same.

I do not claim, that a system like that would be good in general. I just wondered, if it could be simplified by resuing what's already learned.

about 2 years ago

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