Most people are familiar with optical lasers through their experience with laser pointers. But what about a laser made from sound waves?
Optics & Photonics
May 17, 2019
0
6
In conventional holography a photographic film can record the interference pattern of monochromatic light scattered from the object to be imaged with a reference beam of un-scattered light. Scientists can then illuminate ...
A fortuitous conversation between two University of Illinois scientists has opened a new line of communication between biomedical researchers and the tissues they study. The new findings, reported in the Proceedings of the ...
Soft Matter
May 06, 2019
3
141
Colliding a stream of electrons with laser light near an array of tiny silver structures could be the recipe for a new X-ray source that could revolutionize medical imaging and security scanning.
Optics & Photonics
Apr 30, 2019
0
24
On April 10, 2019, the Event Horizon Telescope (EHT) unveiled the first-ever image of a black hole's event horizon, the area beyond which light cannot escape the immense gravity of the black hole. That giant black hole, with ...
Astronomy
Apr 26, 2019
106
995
The optical laser has grown to a $10 billion global technology market since it was invented in 1960, and has led to Nobel prizes for Art Ashkin for developing optical tweezing and Gerard Mourou and Donna Strickland for work ...
Optics & Photonics
Apr 16, 2019
0
1455
A University of Arkansas researcher is part of a team of astronomers who have identified an outburst of X-ray emission from a galaxy approximately 6.5 billion light years away, which is consistent with the merger of two neutron ...
Astronomy
Apr 11, 2019
8
1074
The world is finally about to see a black hole—not an artist's impression or a computer-generated likeness, but the real thing.
Astronomy
Apr 10, 2019
23
1644
Massive, ravenous, powerful beyond measure -– physicists are convinced that black holes exist, even if no one has directly observed one.
Astronomy
Apr 09, 2019
10
216
Development of a virtual reality-like projection system to study insect vision could eventually provide the U.S. Air Force with a new type of navigation system.
Engineering
Apr 09, 2019
0
7
Light is electromagnetic radiation, particularly radiation of a wavelength that is visible to the human eye (about 400–700 nm, or perhaps 380–750 nm.) In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not.
Three primary properties of light are:
Light, which exists in tiny "packets" called photons, exhibits properties of both waves and particles. This property is referred to as the wave–particle duality. The study of light, known as optics, is an important research area in modern physics.
This text uses material from Wikipedia, licensed under CC BY-SA
