Light
Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that the human eye perceives. The primary properties of light are intensity, propagation direction, frequency or wavelength spectrum, and polarization. Light is a transverse wave and does not need any medium to travel. The speed of light in a vacuum is a fundamental physical constant, the currently accepted value of 299,792,458 meters per second. Light can also be described as a stream of photons, massless packets of energy.
Atmospheric pollution could be the sign of advanced extraterrestrial civilization
This study is the first time pollution has been examined as a possible technosignature.
Optimizing machine-learning process using light-based processors
A chip-based “frequency comb”, as a light source.
A new technique for suppressing back reflections of light
Trapping light without back reflections.
Scientists took snapshots of light
Scientists examined ideas surrounding the origins of light.
An optical convolutional neural network accelerator for machine learning
Developing smarter, faster machine intelligence with light.
A state of vibration that exists simultaneously at two different times
When light and atoms share a common vibe.
A new technique to demonstrate the time-reversal of optical waves
It doesn’t mean travelling back to the future.
A unique process for producing a light-matter mixture
The research could also have an impact on increasing efficiency of nanoscale chemical reactions.
Physicists successfully demonstrate controlled transport of stored light
A milestone in quantum physics.
A miniature optical modem allows for ultrafast underwater communications
It is sensitive enough to collect data at very high speeds from sources more than 50 meters away.
Revealing the secrets of high-energy cosmic particles
P-ONE: Initiative for a new, large-scale Neutrino Observatory in the Pacific Ocean.