Scientists on the hunt for compact and robust sources of multicolored laser light have generated the first topological frequency comb. Their result, which relies on a small silicon nitride chip patterned with hundreds of ...
Optics & Photonics
Jun 20, 2024
0
602
The human eye can only see light at certain frequencies (called the visible spectrum), the lowest of which constitutes red light. Infrared light, which we can't see, has an even lower frequency than red light. Researchers ...
Optics & Photonics
Jun 20, 2024
0
96
This drone took to the sky over Finland to assess the suitability of one particular terrestrial technology for space: the radar systems found in many of today's cars, responsible for automated cruise control and other safe ...
Planetary Sciences
Jun 12, 2024
0
20
A single universal equation can closely approximate the frequency of wingbeats and fin strokes made by birds, insects, bats and whales, despite their different body sizes and wing shapes, Jens Højgaard Jensen and colleagues ...
Plants & Animals
Jun 5, 2024
0
141
Radio telescopes have an advantage over optical telescopes, in that radio telescopes can be used even in cloudy conditions here on Earth. That's because the longer wavelengths of radio waves can pass through clouds unhindered.
Astronomy
Jun 5, 2024
0
69
A new method of detecting high-frequency gravitational waves (HFGWs) has been proposed by a research team led by Prof. Tao Liu, Associate Professor from the Department of Physics at the Hong Kong University of Science and ...
Astronomy
Jun 5, 2024
0
83
Using the Five-Hundred-meter Aperture Spherical radio Telescope (FAST), astronomers from the Guizhou University in China and elsewhere have discovered eight new millisecond pulsars in the globular cluster NGC 6517. The finding ...
Terahertz waves, known as non-ionizing radiation, can turn into ionization radiation when sufficiently many terahertz photons are focused in space and time. A team led by scientists in Korea and the U.S. has created the world's ...
Optics & Photonics
May 28, 2024
0
32
UNSW quantum engineers have developed a new amplifier that could help other scientists search for elusive dark matter particles.
General Physics
May 23, 2024
1
121
Light measurement devices called optical frequency combs have revolutionized metrology, spectroscopy, atomic clocks, and other applications. Yet challenges with developing frequency comb generators at a microchip scale have ...
Optics & Photonics
May 22, 2024
0
2
