Engineering
If you want to improve the output of solar energy systems, why not also run them at night? That's the question researchers in Qatar and Jordan addressed as they successfully devised a system that promises to more than double ...
Engineering
Like something out of a spy movie, thermal cameras make it possible to "see" heat by converting infrared radiation into an image. They can detect infrared light given off by animals, vehicles, electrical equipment and even ...
Jun 8, 2023
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Engineering
Engineers have designed a new system that can help cool buildings in crowded metropolitan areas without consuming electricity, an important innovation at a time when cities are working to adapt to climate change.
Aug 5, 2019
2
971
Energy & Green Tech
A Tokyo court Wednesday ordered former executives from the operator of the devastated Fukushima nuclear plant to pay 13.32 trillion yen ($97 billion) for failing to prevent the disaster, plaintiffs said.
Jul 13, 2022
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38
Robotics
MIT engineers have developed a magnetically steerable, thread-like robot that can actively glide through narrow, winding pathways, such as the labrynthine vasculature of the brain.
Aug 28, 2019
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969
Energy & Green Tech
An inexpensive thermoelectric device harnesses the cold of space without active heat input, generating electricity that powers an LED at night, researchers report September 12 in the journal Joule.
Sep 12, 2019
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1622
Engineering
Autonomous vehicles relying on light-based image sensors often struggle to see through blinding conditions, such as fog. But MIT researchers have developed a sub-terahertz-radiation receiving system that could help steer ...
Feb 14, 2019
2
41
Engineering
About 750 million people in the world do not have access to electricity at night. Solar cells provide power during the day, but saving energy for later use requires substantial battery storage.
Apr 5, 2022
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675
Electronics & Semiconductors
To operate safely and reliably in outdoor environments, electronic devices should be resistant to a wide variety of external factors, including radiation. In fact, high-energy radiation can damage several components of field-effect ...
Electronics & Semiconductors
EPFL researchers have collaborated with colleagues at Harvard and ETH Zurich on a new thin-film circuit that, when connected to a laser beam, produces finely tailorable terahertz-frequency waves. The device opens up a world ...
Jan 12, 2023
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284
In physics, radiation describes any process in which energy emitted by one body travels through a medium or through space, ultimately to be absorbed by another body. Non-physicists often associate the word with ionizing radiation (e.g., as occurring in nuclear weapons, nuclear reactors, and radioactive substances), but it can also refer to electromagnetic radiation (i.e., radio waves, infrared light, visible light, ultraviolet light, and X-rays) which can also be ionizing radiation, to acoustic radiation, or to other more obscure processes. What makes it radiation is that the energy radiates (i.e., it travels outward in straight lines in all directions) from the source. This geometry naturally leads to a system of measurements and physical units that are equally applicable to all types of radiation.
This text uses material from Wikipedia, licensed under CC BY-SA
