Physics

Missing piece to high-temperature superconductor mystery

New features identified in the electronic behavior of a copper oxide material that may help explain why it becomes a perfect electrical conductor -- a superconductor -- at relatively high temperatures.

NASA in the Park Returns to Downtown Huntsville June 17

NASA's Marshall Space Flight Center and Downtown Huntsville Inc. will return to Big Spring Park East this Saturday, June 17, for the annual celebration of NASA and the city of Huntsville -- NASA in the Park.

Superconducting nanowire memory cell, miniaturized technology

Developing a superconducting computer that would perform computations at high speed without heat dissipation has been the goal of several research and development initiatives since the 1950s. Such a computer would require a fraction of the energy current supercomputers consume, and would be many times faster and more powerful. Despite promising advances in this direction over the last 65 years, substantial obstacles remain, including in developing miniaturized low-dissipation memory.

Superconducting nanowire memory cell, miniaturized technology

Researchers have developed a new nanoscale memory cell that holds tremendous promise for successful integration with superconducting processors. The new technology provides stable memory at a smaller size than other proposed memory devices.

Media Invited to June 21 Science, Safety Briefings on August Total Solar Eclipse

For the first time in 99 years, a total solar eclipse will cross the entire nation Aug. 21. Representatives from NASA, other federal agencies, and science organizations, will provide important viewing safety, travel and science information during two briefings at the Newseum in Washington starting at 1 p.m. EDT Wednesday, June 21.

Media Invited to June 21 Science, Safety Briefings on August Total Solar Eclipse

For the first time in 99 years, a total solar eclipse will cross the entire nation Aug. 21. Representatives from NASA, other federal agencies, and science organizations, will provide important viewing safety, travel and science information during two briefings at the Newseum in Washington starting at 1 p.m. EDT Wednesday, June 21.

Shining light on low-energy electrons

The classic method for studying how electrons interact with matter is by analyzing their scattering through thin layers of a known substance. This happens by directing a stream of electrons at the layer and analyzing the subsequent deviations in the electrons' trajectories. Researchers have now devised a way to examine the movement of low-energy electrons that can adversely impact electronic systems and biological tissue.

Researchers devise a new way to examine the movement of low-energy electrons

The scientific community has known about the existence of electrons for over a hundred years, but there are important facets of their interaction with matter that remain shrouded in mystery. One particular area of interest is low-energy electrons or electrons that have kinetic energy levels of about 10 electronvolts (eV) or less. These electrons affect the functioning of insulators in electronic systems and are responsible for radiation damage in human and other biological tissue.

Helium droplets offer new precision to single-molecule laser measurement

Chemical reactions necessarily involve molecules coming together, and the way they interact can depend on how they are aligned relative to each other. By knowing and controlling the alignment of molecules, a great deal can be learned about how chemical reactions occur. This week in The Journal of Chemical Physics, scientists from Aarhus University in Denmark and the Institute of Science and Technology in Austria report a new technique for aligning molecules using lasers and very cold droplets of helium.

Einstein letters on quantum theory and God to be auctioned

Letters from Albert Einstein giving colleagues his thoughts on physics, God and Israel in the 1950s go under the hammer at a Jerusalem auction house on June 20.

Pages

Subscribe to Mr. Loyacano RSS