These images have been chosen for their uniqueness. Subject matter ranges from
historic events, to really cool phenomena in science and engineering, to relevant
place, to ingenious contraptions, to interesting products (which now has its own
dedicated Featured Product
Cool Pic Archive Pages
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Here is a great
illustration of teamwork and amazing talent. Shortly after the 9/11 terrorist attacks,
came to the Smithsonian Asian art museum to create this sand mandala. They sketched
the outlines using straight edges and a compass, then the team laid down colored
sand sometimes grain by grain. The intricacy and sophistication of the pattern reminds
me of a fractal. Too bad at the end of the project they brushed it all
away and dumped the sand into the Potomac River.
If you are a football fan, you probably already
know about the 49x22 meter displays comprised of 10.5 million LEDs, drawing 635
kW per display. There are two of those plus two 15.5x9 meter displays drawing 80
kW each. That amounts to 1.352 MW, or about the equivalent demand of 2,200 U.S.
homes. I'm not complaining. I think it's pretty cool (or, hot), but I guarantee
there are a lot of eco-nazis in the stands who are willing to overlook the eco-terrorism
being perpetrated in order to have a close-up look at the game action.
you think this is a Rorschach ink blot test, you would be wrong. If you think this
is the first ever CCD image of the surface of the moon, you would be correct. The
100x100-pixel array (0.01 Mpx), used in 1974 to capture the image, was real breakthrough
technology. A kid's toy digital camera takes better pictures than this through a
cheap plastic lens - in color. Relatively simple, dependable, and inexpensive CCDs
have replaced photomultiplier tubes in astronomical imaging applications. Amateurs
can buy incredibly high quality
CCDs for their backyard telescopes for about $1k.
Is nothing sacred? Are no laws absolute and
immutable? Apparently. Remember learning
(Maxwell's equation stating the sum of the magnetic flux
across a closed surface = 0; i.e., no magnetic monopoles)? If I had turned
in an EM exam paper with a result asserting ≠ 0, it would surely have been marked
wrong. The image above shows a material called spin ice (crystalline Dysprosium
titanate Dy2Ti2O7), where at close to absolute zero it acts as a 'frustrated magnet'
and permits magnetic monopoles. Now I am wondering whether 20-some years later I
can have any of my tests re-graded?
First there were the Mandelbrot equations
and their associated 2-D images, otherwise know as fractals. Now we have the
Mandelbulb, a 3-D version that basically takes a Mandelbrot and rotates it
about the z-axis. Oddly enough, it was not until around 2007 that serious efforts
to perfect the equations were completed. Generated structures range in appearance
from biological to ghoulish to just plain weird. Beauty is in the eye of the beholder.
tubes were sort of the pre-solid-state version of 7-segment LEDs. At 2.75" x
1.5" x 1.2", it is not much larger than a multifunction sports watch. CMOS TTL circuits
drive the display - no μprocessor. The only "modern" feature is the use of surface
mount components on the PCB. Two 1.5 V coin cells power the nixie tubes via a voltage
multiplier circuit, and will last about 6 months if the display is turned on a few
time per day.
Do you remember when most PCs came with 640k
of RAM - total? 1 MB required a special expansion board. Here is a section of the
32 kB 'rope memory' that guided Apollo 11 to the moon and back. It was woven by
hand by the dedicated workers (mostly women) at Raytheon. Guidance, systems monitoring,
user interface, and attitude control software shared it with
for temporary data storage.
It is innately rad[iation] hardened.
Perhaps you have already seen this. In case
you have not, here is the picture making the rounds this year titled, appropriately,
"The Best Christmas Decoration Ever." Some have questioned the authenticity
of the image, but its veracity has been confirmed by Snopes
(although Snopes has been wrong). Regardless, what
a riot it must have been for the homeowner as he watched passersby freak out over
News of the catastrophic
Russian hydroelectric power plant failure last August made just a brief appearance.
On August 17, 2009, the Sayano-Shushenskaya dam on the Yenisei River suffered a
breech that flooded the turbine room, causing at least 1 transformer explosion
(see video) and extensive damage to all 10 turbines, destroying at
least 3 of them. 74 workers are known to have died in the accident. 40 tons of transformer
oil were spilled into the river. These pictures show the incredible magnitude of
damage, and the seemingly insurmountable work that will be needed to clean up and
restore the plant to operation.
Located 14 km west of Denmark in the North
Sea, Horns Rev Offshore Wind Farm is one of the world's largest water-based wind
farms. 80 wind turbines produce up to 160 MW, creating enough power for 150,000
households using 4,000 kWh per year. This photo demonstrates how downwind turbines
can lose efficiency due to turbulence caused by upwind turbines - as much as 20-30%.
I am a big alternative energy fan, but still not entirely convinced that in the
long run they are anywhere near as efficient $-wise as nuclear, hydro, or coal power.
A group of engineers are volunteering their
time and expertise to restore an IBM 1401 computer for the Computer History Museum.
Says one, "It's a mechanical machine: The tape machine has an air sensor, a little
rubber diaphragm with contacts on it, and you can see it work. With these modern
computers, it's just magic—they've got things a few nanometers long, and you'll
never see them." Sporting a magnetic core memory, the 4-ton system has about one-millionth
the computing power of a $600 desktop PC.
It seems that just about anything can
be trademarked these days. This very interesting chart demonstrates the importance
of color selection when choosing a corporate logo. Many of the most well-known tech
companies are placed on the spectrum line according to logo color. The article points
out that T-Mobile (Deutsche Telekom) has trademarked the color magenta. UPS owns
the word and color "brown" and Orange owns orange in their respective realms. Given
that the color spectrum is continuous, trademark law must somehow specify how far
apart colors must lie in order to not encroach ownership.