Tuesday, July 26, 2011

Inside The 2012 Audi A7: A Tech-Lover's Dream Car (VIDEO)

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I called the $60,000 sedan a tech-lover's dream car, due to its jet pilot display, handwriting recognizing touchpad, and first-of-its kind Google Earth GPS and in-vehicle WiFi.

Monday, July 25, 2011

New graphene discovery: harvest energy from flowing water

flow of water over surfaces coated with the nanomaterial graphene could generate small amounts of electricity.

As long as water is flowing over the graphene-coated devices, they should be able to provide a reliable source of power.

"While a similar effect has been observed for carbon nanotubes, this is the first such study with graphene. The energy-harvesting capability of graphene was at least an order of magnitude superior to nanotubes.

oil and gas companies would like to augment this process by sending out large numbers of microscale or nanoscale sensors into new and existing drill wells.

solution for a key challenge to realizing these autonomous microsensors, which will need to be self-powered.

We'll wrap the graphene coating around the sensor, and it will act as a 'smart skin' that serves as a nanofluidic power generator,"

Shocking Discovery about Moon - Earth's Magnetotail Charges The Surface up 1000s volts

The last time man walked on the moon was in 1972. Now, NASA is planning to re-visit the moon by the year 2020 -- but a shocking discovery about Earth's companion may put a hold on those plans.

2008. On the side of the moon facing the sun, ultraviolet particles disrupt the electromagnetic effect, keeping the voltage at low levels, but on the dark side, the voltage can reach hundreds or thousands of volts.

If astronauts walked across the charged surface, they might feel a static shock -- just like walking across a carpet and then touching a door knob. It's not a deadly shock, but a powerful zap!

NASA's Opportunity Rover tops 20 miles of Mars driving

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More than seven years into what was planned as a three-month mission on Mars, NASA's Mars Exploration Rover Opportunity has driven more than 20 miles, which is more than 50 times the mission's original distance goal.

Thursday, April 7, 2011

Planned wireless Internet network threatens GPS

A new, ultra-fast wireless Internet network is threatening to overpower GPS signals across the U.S. and interfere with everything from airplanes to police cars to consumer navigation devices.

News from The Associated Press

Sunday, April 3, 2011

Solar Concentrating PhotoVoltaic Farm: New technology. Combines mirrors and cells.

next generation of solar tech.
PHOTOS: The Nichols Solar Concentrating PV Farm: Cleantech News and Analysis �

Cellphone Radiation May Alter Your Brain. Here are rules of safe use.

The Journal of the American Medical Association indicated that heavy use of cell phone could alter brain activity.

it was unclear whether the changes in the brain — an increase in glucose metabolism after using the phone for less than an hour — had any negative health or behavioral effects.

advises users to keep cellphones at a distance by putting them on speaker mode or using a wired headset whenever possible.

The next best option is a wireless Bluetooth headset or earpiece, which emit radiation at far lower levels.

If a headset isn’t feasible, holding your phone just slightly away from your ear can make a big difference; the intensity of radiation diminishes sharply with distance. “Every millimeter counts,”

So crushing your cellphone into your ear to hear better in a crowded bar is probably a bad idea.

Go outside if you have to take or make a call.

And you might not want to put your cellphone in your breast or pants pocket either, because that also puts it right up against your body.

Carry it in a purse or briefcase or get a nonmetallic belt clip that orients it away from your body.

Some studies have suggested a link between cellphone use and cancer, lower bone density and infertility in men.

But other studies show no effect at all.


You can get an idea of the relative amounts of radiation various cellphone models emit by looking at their SAR, or specific absorption rate.

the Environmental Working Group, a nonprofit organization, has a comprehensive list of the SAR values for most cellphones available from major carriers on its Web site.

But more important than looking for a low-SAR phone is how you use it.

Many cellphones emit the most radiation when they initially establish contact with the cell tower, making their “digital handshake.”

To reduce exposure it’s best to wait until after your call has been connected to put your cellphone next to your ear.

emission of radiation is “significantly less when a cellphone is receiving - you listen - signals than when it is transmitting - you talk,”

cellphone emits less when you are stationary because when you are moving rapidly — say, in a car or train — it must repeatedly issue little bursts of radiation to make digital handshakes with different towers as it moves in and out of range.

weak signal indicates it has to work harder and thus will emit more radiation. “Fewer bars means more radiation

Children’s developing brains and tissues are thought to be most vulnerable to cellphone radiation.

Health authorities in Britain, France, Germany and Russia have all issued warnings against allowing small children to use cellphones for extended periods, if at all.

from www.nytimes.com - www.nyt.com
Cellphone Radiation May Alter Your Brain. Let’s Talk. - NYTimes.com

safety, cellphones, headset buying tips in full

lookup cellphone radiation levels

Samsung the best, Motorola the worst, in general

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just as we know cars kill, but we use them, we will use cell phone with their radiation.

Tuesday, March 29, 2011

Researchers close in on technology for making renewable petroleum

Researchers close in on technology for making renewable petroleum

High-tech more efficient solar Panels

new high tech solar cells power generation

Today, there are more than 76 million residential buildings and nearly 5 million commercial buildings in the United States. Combined, they use two-thirds of all electricity consumed in the United States and produce 35 percent of all carbon dioxide


Conventional solar systems are about 14 percent efficient. This system has a combined heat and power efficiency of nearly 80 percent

Bringing Sunlight Inside -- Mechanical Engineers Create High-tech Solar Panels

solar cells from China
http://www.china-energie.de

Tuesday, February 8, 2011

Monday, February 7, 2011

Engineers grow nanolasers on silicon, pave way for on-chip photonics

Engineers grow nanolasers directly on silicon, pave way for on-chip photonics http://ow.ly/3Rwf5 powerful biochemical sensors.
optoelectronics.

Engineers grow nanolasers on silicon, pave way for on-chip photonics

Mysteries of the Ancient World Game