The creation of photoelectrons through ionisation is one of the most fundamental processes in the interaction between light and matter. Yet, deep questions remain about just how photons transfer their linear momentum to electrons. ...
General Physics
Dec 5, 2019
0
3202
At human scale, controlling temperature is a straightforward concept. Turtles sun themselves to keep warm. To cool a pie fresh from the oven, place it on a room-temperature countertop.
Nanomaterials
Aug 10, 2019
0
490
(Phys.org)—If you sweep a laser pointer across the Moon fast enough, you can create spots that actually move faster than light. Anyone can do it.
Astronomy
Jan 8, 2015
7
1625
Austrian physicist Erwin Schrödinger (1887-1961), one of the giants of contemporary science, considered entanglement the most interesting property in quantum mechanics. In his view, it was this phenomenon that truly distinguished ...
Optics & Photonics
Sep 7, 2018
6
804
One day in the not-so-distant future, light sails may hurtle through space at speeds of around 20% of the speed of light (or 60,000 km/sec), propelled not by fuel but rather by the radiation pressure from high-power lasers ...
A quantum phenomenon allows detectors which sense oscillations of space-time to measure with 50 percent more accuracy.
Quantum Physics
Sep 11, 2011
64
0
Using a novel method, beams of laser light can be deflected using air alone. An invisible grating made only of air is not only immune to damage from the laser light, but it also preserves the original quality of the beam, ...
Optics & Photonics
Oct 3, 2023
11
1021
(Phys.org)—Nanophotonics, which takes advantage of the much faster speed of light compared with electrons, could potentially lead to future optical computers that transmit large amounts of data at very high speeds. Working ...
Researchers at the University of Rochester and Cornell University have taken an important step toward developing a communications network that exchanges information across long distances by using photons, mass-less measures ...
Optics & Photonics
Nov 4, 2020
1
2810
(Phys.org)—Fujifilm is working on a new recording method for optical discs. It has developed the new method through the use of two-photon absorption in order to generate heat, and the report in TechOn! notes that this two-photon ...
