EPFL scientists have been able to measure the ultrashort time delay in electron photoemission without using a clock. The discovery has important implications for fundamental research and cutting-edge technology.
General Physics
Feb 8, 2017
4
2519
Analyzing ultrafast chemical processes requires ultrafast lasers—light pulses lasting for mere attoseconds (10-18 second)—to act as a "stop-motion" strobe camera. Physicists at the University of Nebraska-Lincoln are analyzing ...
General Physics
Sep 8, 2016
0
14
Have you ever wondered how to get your customers to write more positive reviews? Wait a while before you ask for feedback about a service or product.
Economics & Business
May 11, 2016
0
8
(Phys.org)—Ideal invisibility cloaks like those in Harry Potter may be physically impossible, a new study shows. The researchers demonstrate that even the best invisibility cloaks can hide an object from only some observers, ...
Scientists have identified an ingeniously elegant brain circuit consisting of just five nerve cells that allows female crickets to automatically identify the chirps of males from the same species through the rhythmic pulses ...
Plants & Animals
Sep 11, 2015
0
93
Light waves trapped on a metal's surface, called surface plasmons, travel farther than expected, up to 250 microns from the source. While this distance is just one-hundredth of an inch, it is far enough to possibly be useful ...
Nanophysics
Aug 11, 2015
0
28
Astronauts on board the Pioneer, a spacecraft heading home from Mars, are categorizing asteroid samples when their life-support system suddenly malfunctions. The only person who can help is the NASA engineer with the information ...
Space Exploration
Jul 14, 2015
0
17
In late 2013, when the neutron star at the heart of one of our galaxy's oddest supernovae gave off a massive burst of X-rays, the resulting echoes—created when the X-rays bounced off clouds of dust in interstellar space—yielded ...
Astronomy
Jun 23, 2015
26
2148
Fragrances that are sensitive or need to be released with a time delay can be enclosed in microcapsules. In the journal Angewandte Chemie, Swiss scientists have now introduced a new type of microcapsule that can be ruptured ...
Materials Science
Jan 27, 2015
0
17
Visitors to the ESA Technical Centre's Open Day came face to face with a centaur as they toured the telerobotics laboratory.
Space Exploration
Oct 10, 2014
0
0
