Archive for September, 2009

The Sun "Announced" Global Cataclysm

Canadian scientists reported about the sun intensive nuclear fusion. The researchers recorded the acceleration of fusion reaction of light nuclei into heavier nuclei, which occurs at ultra-high temperature and accompanied with a huge amounts of energy.
According to scientific concepts, the main source of energy of the sun and other stars is nuclear fusion reaction. In terrestrial conditions, this reaction carries out like the explosion of the hydrogen bomb. Such solar nuclear fusion links to the upcoming a new cycle of stars. Traditionally, the solar cycle lasts 11 years, As a result of increasing activity of the star, the energy generated by the Sun, will bring next few years the splash of global warming.
The last solar activity was recorded in 1998 and accompanied with unusual daily limit temperature.
By the way at the beginning of April this year, American scientists from American Academy of Sciences (NASA) figured out a hypothetical scenario entitled “Threats to Space Weather: social and economic consequences’, where researchers predicted that the “doomsday” will happen on Sept. 22, 2012.
On that day, the study’s authors believe, the sun will be occurred a series of heavy outbreaks. The consequence would be unheard of geomagnetic storms on the planet.
The alarm signal from the satellite observing the Sun has to come to the center of space research in Houston. At the disposal of mankind will be just a few minutes, the researchers said, but all efforts will be futile.
As they say, people will see lights, like the Arctic ones, but much brighter. As far as all power transformers will come down only in the U.S. in 90 seconds after the sun’s impact will be destroyed up 300 key transformers then more than 130 million people would be without electricity will.
Nobody dies in that very moment, just shutting water, petrol station, oil and gas pipelines. Independent power systems will work for three days then also stop. But later, as a result, millions people will die because of the global paralysis of the economy.

The Smallest Robot in the World

Bruce Donald and his colleagues, engineers and computer scientists from Dartmouth College have built the smallest robot in the world which is the thickness of human hair and shorter than the sharp point of a thumb tack, integrated in a small package, wireless powered and controlled. However, the robot takes over ten thousand steps a second and continue their motion for over half an hour with no sign of fatigue, with net motion of over one foot in length. That represents over 30 million steps; a human taking that many steps would go over half way around the world.

Features:

60x250x10 micro-meter robot made of polycrystaline silicon and chromium
Utilizes surface micromachining (MEMS) with stress engineering to produce out-of-plane curl.
Monolithic fabrication from poly-silicon includes on-board:
power and control signal pickup,
decoding and state memory (electro-mechanical), and
locomotion and turning.
Two gaits:
forward walking: MEMS Scratch Drive propulsion only, and
turning: Propulsion and Turning Arm both deployed.
12nm average step size.
Operation demonstrated at 16kHz (not an intrinsic speed limit).
Teleoperation alows motion anywhere on a plane.
Moves on an insulated substrate with submerged interdigitated electrodes.
Control is one-wire (plus ground) with four level logic, and is independent of robot position or orientation on substrate surface.