Stars emit light that travels through empty space without significant attenuation. The visual signal is essentially lossless until detected. After many years and billions of kilometers, starlight-photons may eventually encounter ...
Optics & Photonics
Apr 19, 2023
0
8
In recent years, there has been growing interest in harnessing microorganisms for simultaneous wastewater treatment and renewable bioelectricity production. Microbial fuel cell (MFC) technology can convert the chemical energy ...
Cell & Microbiology
Mar 13, 2023
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4
The EU on Tuesday announced proposals to try to reverse an "alarming decline" in the number of bees—and other insects that pollinate the bloc's crops—including by rewarding organic farming.
Ecology
Jan 24, 2023
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6
With a transmitter less powerful than a microwave oven, a team of scientists and engineers has used the National Science Foundation's Green Bank Telescope (GBT) and Very Long Baseline Array (VLBA) to make the highest-resolution ...
Planetary Sciences
Jan 10, 2023
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49
After studying the effects of irradiation defects on the work function of graphene electrodes in thermionic energy converters (TECs), a research team found that the generation of defects in graphene through irradiation would ...
Nanophysics
Nov 23, 2022
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14
A new light source generates ultrashort infrared pulses at wavelengths around 12µm with previously unattained peak intensity and stability. First experiments in vibrational spectroscopy on water demonstrate the high potential ...
Optics & Photonics
Nov 21, 2022
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3
COP27 is the 27th Conference of the Parties (countries) that signed up to the United Nations Framework Convention on Climate Change. The convention was established at the Rio Earth Summit in 1992, and has been ratified by ...
Environment
Nov 4, 2022
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4
Life and supernovae don't mix.
Astronomy
Oct 27, 2022
4
69
Virtually all wind turbines, which produce more than 5 percent of the world's electricity, are controlled as if they were individual, free-standing units. In fact, the vast majority are part of larger wind farm installations ...
General Physics
Aug 11, 2022
1
137
Triboelectric nanogenerators (TENGs) can collect mechanical energy through contact initiation and electrostatic induction. TENGs have a wide range of applications in self-powered sensors and mechanical energy harvesting.
Nanophysics
May 30, 2022
0
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