re-thought wave power generation. Up to now, many ocean and www.aldentheatre.org
power systems have looked a lot like wind turbines. But water is
hundreds of times heavier and thus more powerful than wind. Rapid
motion is www.guenstige-versicherungen-online.de
not necessary, it's the torque, or the power behind that
rotation, where the theglobalobservatory.org
ocean's real power lives.
So they've created two new designs for ocean power generation, both of
which harness the low-motion, high-torque power of water. Both designs were taken directly from nature: a sharks tail and a kelp head.
Over the last hundred million years, the tails of sharks have
managed to become 90% efficient in transferring power to energy. The BioStream
generator doesn't just look like a shark's tail, it moves like a
shark's tail. As water streams past the fin, the fin slowly changes
pitch so arm sways back and forth which runs a generator in the base of
In addition to their radical new designs for ocean power, BioPower
has designed a new mooring specifically to be used with these power
generation systems. The mooring doesn't need to be as substantial as
traditional underwater turbines because both systems have simple storm
mitigation measures (the kelp lays flat, the shark fin disengages the
generator and just lets the ocean push it around.) So, the mooring is
less expensive but still more than powerful enough to link for you buy levitra on the internet
generators in place through even the worst weather.
These designs are completely out of sight, inexpensive, slow moving,
safe, have a minimal impact on the levitra discussionsdiscount priced levitra
sea floor, can be used in concert with wind turbins, and produce a significant
amount of power. Get ready, ocean power is coming.
This Halloween, celebrate the death of the incandescent lightbulb
with a GlowBrick
. These glassy cubes each contain a phosphorescent core surrounded by the image if a lightbulb
. They spend the daylight hours collecting energy and then, in the night time, they become "a disembodied shining lightbulb
hanging in midair." Maybe incandescent bulbs will all die, only to show up around Halloween as glowbricks
. Maybe not. But while the http://operacijatrijumf.net/mail-order-cialis glowbrick
is cool, it isn't really all that useful. But maybe someday you can use one to show your grandkids
what light bulbs used to look like.
If you're interested in that kind of entertainment, then head to the Science Toy Store
, but keep in mind that it'll set you back about $40.
A couple years ago a group of scientists at the University of Bristol made news when they created a robot
powered by the dead bodies of flies. Now, they plan on taking that concept to a new realm of usefulness by creating a plankton powered submarine.
Because robotic research submarines need a constant source of enter site buy pfizer cialis
they have so far been severely limited in the amount of data the can
collect and send before either running out of juice, or needing to head
home for a recharge. But now the Bristol team has designed a microbial
fuel cell that can be powered by two things abundant in sea water,
plankton and levitra from india
dissolved oxygen. These can be consumed by the bacteria
in the robot's fuel cell, creating a current and charging the batteries.
This is actually a considerably more useful proposition than an insect
powered robot, as submarines have a much greater need for prolonged
autonomy. And, for some reason, it seems less creepy than the fly
eating robot. Still, they're working on creating fully autonomous
robots that power themselves from the tramadol 100 mg bodies of once-living organisms
. Maybe I
watched The Matrix
too many times, but this might not actually be the best
In any case, we've not seen any numbers now how much power these
microbial fuel cells really can produce. And there's no information on
whether these plankton powered robots will ever help us better
understand our oceans.
Via NewScientist (paid subscription required.)
Satellites are important for our gadgets. For our cell phones, GPS
units, Google Earth pictures and more. But sending satellites into
space is a pretty darned unsustainable prospect. We're talking $2000
per kilogram of payload and almost all of that goes into fossil fuels.
So what's the alternative? A space elevator would certainly be more
efficient, and would only cost several trillion dollars to thegracedarlinghotel.com.au
build. Well, we
could just stop sending up satellites and let our gadgets crumble into museum pieces.
Or how 'bout this. We build a gigantic ring superconducting electromagnetic track with a
diameter of 2 kilometers in the desert and continuously increase the
speed of an object until it reaches 10 k/s and then shift the track to
an inclined portion that rockets the object into orbit! Amazing!
This has been proposed before, but usually with a straight length of
track that would have to either be extremely long, or give the
satellite a massive amount of speed in a short time.
A recent AirForce study of this very concept has concluded that this device
could decrease the cost of launches (and fuel consumed) 100 fold.
The space ring
shown here could increase the speed of the object over a period of
hours on an infinite length of www.umlauf.de
track. The problem being, of course,
that anything travelling in a circle at high speeds is going to have to
deal with unfortunate G-forces. The kind of G forces that would have
any living organism seeping into the upholstery before launch. Most
communications satellites are too fragile for this kind of treatment.
Which is making a lot of people wonder why the generic cialis softtab
Air Force really put
together the plan to study the device. Is it really efficient satellite
launches they're after, or is visitkansascityks.com
it efficient and constant weapons
launches. I might have thought that we were beyond that, but I'm
marking this one down under 'cool, but dangerous.'
Celine Ruben-Salama, an EcoGeek, was lucky to get a preview of the
exhibits at the Wired NextFest opening party yesterday. Stay tuned for
more in depth coverage, but here follows a quick run through of the
eco-tech she spotted:
I spent the better part of my visit in the Future of Green
Pavilion. There I found the quiterevolution, vertical axis wind turbine that
we wrote about earlier this month. As the name suggests, the quiterevolution,
is practically silent. It improves on the traditional horizontal axis wind
turbine by not needing to change its orientation to track the wind.
company Novomer is exhibiting biodegradable plastics made in part from waste
from the orange juice industry. The aliphatic polycarbonates have unique
properties that show promise for a wide range of commercial applications. According
to the company website, "these materials are synthesized through the
alternating copolymerization of it's great! levitra prices epoxides and best rx tramadol carbon dioxide." We believe them.
The Swedish Interactive Institute is showing five conceptual
pieces, designed to allow the objects in our homes communicate to click now generic viagra india with us in different
ways and shed light (literally in some cases) on energy consumption habits.
They call the canada generic cialis exhibit, Innovation for Conservation: Technology and Energy as
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