Three supersonic asteroids to pass by Earth Sunday - NASA jpost.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from jpost.com Daily Mail and Mail on Sunday newspapers.
Scientists from Israel's Weizmann Institute of Science, in collaboration with teams at Manchester University and UC Irvine, have shown that an electronic fluid can flow through materials without any electrical resistance, thereby perfectly eliminating a fundamental source of resistance that forms the ultimate limit for ballistic electrons. This result could open the door to improved electronic devices that do not heat up as much as existing technologies. When electrons flow in electrical wires, they lose part of their energy, which is wasted as heat. This heating is a major problem in everyday electronics. The heating occurs because electrical conductors are never perfect and have a resistance for the flow of electrical currents. Typically, this resistance originates from the scattering of the flowing electrons by imperfections in the host material. But it stands to reason that a perfect conductor, devoid of any imperfections, would have zero resistance. However, even if the con
A 260-foot Asteroid that s 10x faster than a bullet to zip past Earth: Should we be worried? digit.in - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from digit.in Daily Mail and Mail on Sunday newspapers.
The asteroid has been given the designation 2022 QC7 and it is not too big, with a width ranging from just 16 metres to 36 metres, according to the Center for Near-Earth Object Studies (CNEOS) at NASA s Jet Propulsion Laboratory (JPL).