Erbium-doped fiber amplifiers (EDFAs) are devices that can provide gain to the optical signal power in optical fibers. They are often used in long-distance communication fiber optic cables and fiber-based lasers. Invented ...
Optics & Photonics
Jun 16, 2022
0
183
Usually, increasing agricultural productivity depends on adding something, such as fertilizer or water. A new Stanford University-led study reveals that removing one thing in particular—a common air pollutant—could lead ...
Ecology
Jun 1, 2022
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178
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
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53
The yellow-billed hornbill, a cousin of fan-favorite Zazu from The Lion King, faces local extinction due to the climate crisis. Researchers investigated the effects of high air temperature and drought on the breeding success ...
Plants & Animals
May 19, 2022
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214
Afroz misses school every day to spend hours waiting with a handcart full of containers for a special train bringing precious water to people suffering a heatwave in India's desert state of Rajasthan.
Environment
May 17, 2022
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18
Semiconductor lasers are the most widely used lasers due to their compact size, high efficiency, low cost and wide spectra. But they suffer low output power and low beam quality—two specifications difficult to improve simultaneously. ...
Optics & Photonics
May 5, 2022
0
306
The Sun emitted a strong solar flare on May 3, 2022, peaking at 9:25 a.m. EDT. NASA's Solar Dynamics Observatory, which watches the Sun constantly, captured an image of the event.
Space Exploration
May 3, 2022
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37
Rapid hydroelectric dam expansion in the Amazon poses a serious threat to Earth's largest and most biodiverse river basin. There are 158 dams in the Amazon River basin, with another 351 proposed; these projects are typically ...
Environment
Feb 17, 2022
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21
Returning to college to earn a bachelor's degree leads to both an immediate increase in annual income after graduation and an increase in annual income growth each year after graduation, according to a Kansas State University ...
Education
Jan 7, 2022
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26
Technologies that take advantage of novel quantum mechanical behaviors are likely to become commonplace in the near future. These may include devices that use quantum information as input and output data, which require careful ...
Quantum Physics
Dec 22, 2021
0
507
