Biologists at the University of Florida have found a reason why men's ring fingers are generally longer than their index fingers — and why the reverse usually holds true for women.
Other
Sep 5, 2011
28
2
For the first time, scientists working at the National Institute of Standards and Technology have demonstrated a new type of lens that bends and focuses ultraviolet (UV) light in such an unusual way that it can create ghostly, ...
General Physics
May 24, 2013
12
0
Scientists from the University of Aberdeen have been working as part of an international collaboration co-ordinated by the Institute of Genetics and Developmental Biology at the Chinese Academy of Sciences in Beijing to try ...
Evolution
Aug 26, 2015
12
2569
A POSTECH research team has developed a transparent amorphous silicon that transmits visible light—which permits us to distinguish the colors of objects—enabling the development of paper-thin lenses usable in head-mounted ...
Materials Science
Feb 16, 2021
1
30
(Phys.org)—For more than 100 years, scientists have debated the question: when light travels through a medium such as oil or water, does it pull or push on the medium? While most experiments have found that light exerts ...
A refractive index of zero induces a wave vector with zero amplitude and undefined direction. Therefore, light propagating inside a zero-index medium does not accumulate any spatial phase advance, resulting in perfect spatial ...
Optics & Photonics
Jan 15, 2021
0
14
A new composition of germanosilicate glass created by adding zinc oxide has properties good for lens applications, according to Penn State researchers. This marks the discovery of a novel glass family.
Materials Science
Apr 3, 2019
0
160
Refractive index—the ratio of the speed of electromagnetic radiation in a medium to its speed in a vacuum—can be modulated fast enough to generate photonic time crystals (PTCs) in the near-visible part of the spectrum, ...
Optics & Photonics
Jul 7, 2023
0
1327
(AP) -- The Texas attorney general is accusing Google of improperly withholding evidence to stymie an investigation into whether the company has been abusing its dominance of Internet search.
Internet
Jun 22, 2012
2
0
In 2015, researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) developed the first on-chip metamaterial with a refractive index of zero, meaning that the phase of light could be stretched ...
Optics & Photonics
Oct 9, 2017
8
2664
