Whether Harry Potter's invisibility cloak, which perfectly steers light waves around objects to make them invisible, will ever become reality remains to be seen, but perfecting a more crucial cloak is impossible, a new study ...
General Physics
Jun 7, 2019
2
111
Researchers have found a link between some of the largest and smallest objects in the cosmos: supermassive black holes and dark matter particles.
Astronomy
Jul 22, 2024
6
909
Light has some well-established dynamical properties that have defined our understanding of electromagnetic radiation for over a century. Two of the most fundamental of these properties are that photons of light carry momentum ...
Optics & Photonics
Apr 25, 2014
7
4
Light is an electromagnetic wave: It consists of oscillating electric and magnetic fields propagating through space. Every wave is characterized by its frequency, which refers to the number of oscillations per second, measured ...
Optics & Photonics
Dec 2, 2021
4
3653
University of Colorado Boulder researchers will update NASA officials next week on a revolutionary space telescope concept selected by the agency for study last June that could provide images up to 1,000 times sharper than ...
Astronomy
Jan 23, 2015
13
1923
One of the challenges of optical microscopy is to continually increase the imaging power, or resolution. In the past three hundred odd years, scientists have been building ever-better microscopes. The limit, for a long time, ...
Optics & Photonics
May 14, 2020
0
235
An international team of scientists has developed a relatively simple mathematical explanation for the rogue ocean waves that can develop seemingly out of nowhere to sink ships and overwhelm oil platforms with walls of water ...
General Physics
Jun 21, 2016
4
240
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 ...
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With extremely short wavelengths and very high intensities, light-matter interaction seems to be different than previously accepted.
General Physics
Apr 24, 2009
9
0
In summer 2021, a stunning heat wave swept western North America, from British Columbia to Washington, Oregon and beyond into other inland areas where the climate is generally mild. Temperature records were set by tens of ...
Earth Sciences
Mar 27, 2023
3
434
