TECHNOLOGY SUPPLY

CELLPHONES COULD DETECT HAZARDOUS CHEMICALS Sensors built into cellphones could detect hazardous chemicals and spread the word to people nearby   Your smartphone can post Twitter updates and find late-night pizza. But warn you of a hazardous chemical spill? Soon there will be an app for that too. The Department of Homeland Security is working on technology that allows cellphones to double as chemical detectors. In 2008, a DHS team led by electrical engineer Stephen Dennis began investigating ways to make sensing equipment more ubiquitous and realized that nearly every person carries a computer powerful enough to run chemical-detection algorithms. The plan: When a person’s phone senses a hazardous gas in the air, it notifies local authorities, who analyze the threat and, if the gas is deadly, warn everyone in the vicinity via text message. The only hitch is, the sensors used to identify toxins are not exactly standard on iPhones. Dennis presented the idea, dubbed Cell-A...

World's First Peel-Off Solar Cells Researchers at Stanford University have created what they claim to be the first flexible, reusable decal-like solar panels that can attach to almost any surface. In other words, it is possible to attach these Thin-Film Solar Cells (TFSCs) to paper, plastic and glass without direct fabrication. The adhesive comes off with some room-temperature water. Thin-film solar cells (TFSCs), such as hydrogenated amorphous silicon (a-Si:H), cadmium telluride (CdTe) and copper indium gallium selenide (CIGS), are generally made with rigid silicon and glass structures to maintain their form, according to a paper by lead investigator Chi Hwan Lee, a mechanical engineering doctoral candidate, and the study's contributors in the Dec. 20 issue of Sci...

                                 Human-power-Future-                                                                                      By using out natural body movement, they have created a small chip that will actually capture and harness that natural energy to create enough energy to power up things such as a cell phone, pacemaker and many other small devices that are electronic.                                                                                         ...

kites may be a way to bring that power down to Earth                                                              "You know how a kite can pull its string from your hands? Airborne wind-energy systems like ours work on the same principle—the pull of the kite turns a generator and creates electricity. Kites are promising because they can go higher than a regular wind turbine, to altitudes where wind speeds are faster and more consistent.                                                                                  In our experimental system, we use an off-the-shelf kite about 20 square feet in area. We’ve flown it about 300 feet. A...

How to save  Electrical energy at Home In our home we use lot of electrical equipment like Tv, Freeze, Washing machine,Mp3 player. music system, computer laptop. But we have not adequate knowledge for how to use this electrical equipment in proper way Due to this ignorance we are paying more electricity Bill which we are not actually use. Do you know in actual we are consuming more electricity or paying more amounts what we actually not use it? According to the energy auditors we can easily save between 5 and 10% of their energy consumption (and costs) by changing our behavior such as switching electrical equipment off at the mains rather than leaving it on standby, turning off lights when they’re not being used By saving Electrical energy will directly reflected to saving money so it is very necessary to under stood ghost unit or amount which we are paying without using the appliances. The major appliances in your home — refrigerators, clothes washers, dishwashers — account for a ...

Take a look and have fun-13 New Inventions Year 3000 They say the world would be no more in 2012 but our scientists have seen the future and set their targets. By the year 3000, this world is going to have a variety of multi tasking personal machines which will make the work much easier for population. They even can’t give any guess that what percentage of people will be alive to take advantage of it.  However, there are 13 new inventions for year 3000. Take a look and have fun. Wanna shave? Need to be fit…. Breakfast time Loo Entertainment Rich Athletes Wanna sit?? Save fuel Sick and Sound Parlour visit Wanna fly?? Underwater Drive Error in typing No need to carry Bag now !!

Dyson Announces Blade-less Fan, Explains Principle The Dyson Air Multiplier looks like a cylindrical column topped with a ring. At the first glance, I thought it has no fan. The cross-section of the ring looks like an aircraft wing. The body without the ring The cross-section of the body. The gray part at the bottom is the fan whose blades are positioned at irregular intervals. The simulation of the airflow near the ring The analysis of the flow velocity. Airflow is locally concentrated near the ring. Dyson and "fervent buyer" Shigeki Hosokawa The electric fan looks like a cylindrical column topped with a ring. At the first glance, I thought it has no fan. But there actually is a fan inside its body. The Air Multiplier uses the fan to blow air into the ring, which is hollow inside. Then, the air comes from a narrow opening of the ring. Finally, 15 times as much air as is sent by the fan can be blown from a large area because of a viscous shear flow. "When exami...