electricity

Spending a day on the Moon means enduring temperatures close to 100 degrees. The twilight is not a consolation for crew and vehicles, since when you turn your back to the Sun, the surface of the satellite reaches -150 degrees.

Scientists at Berkeley Laboratories, in the United States, have managed to produce electricity using small generators full of viruses that are harmless to humans and genetically modified. It is a promising first step towards the development of small devices that "harvest" electricity from daily tasks, for example to charge the mobile with the energy we produce when we step on the ground while we walk, according to the magazine today ' Nature Nanotechnology '.

Fluorescent bulbs and LED bulbs last between 6,000 and 15,000 hours, that is, up to 15 times longer than conventional bulbs. They also use less electricity, up to a fifth of what normal incandescent bulbs use.

British scientists have developed a system to generate electricity directly from urine, using microbial fuel cells (CCMs). The method could be interesting if we consider that each day an adult human being produces 2.5 liters of urine, and that each year 6.4 trillion liters of urine are produced in the world, which are discarded.

Fujitsu has unveiled the world's first fully wireless display at CeBIT 2011 in Hannover, Germany. The 22-inch model integrates SUPA (Universal Power Smart Access) technology, which supplies electricity through magnetic induction.

According to Ohm's Law, the current flow through a circuit is proportional to the potential difference, also called voltage or voltage. In the present case, the bird is the circuit.

This is the name given to the fact that per capita electricity spending in California has remained stable since 1973, while in the rest of the United States it has grown by 50%. The effect is attributed to energy savings and efficiency, a cause led by physicist Arthur H. Rosenfeld, who was born in Alabama in 1927.

The air that flows around cars and planes as they travel could be used in the near future to generate electricity, according to physicist Yiannis Andreopoulos and his colleagues at the City College of New York.