Hi Tech & Innovation
Will they or won't they? Headlines surface regularly that this, that or the other among digital brands are going to come out with a killer pair of augmented reality glasses, and it's hope, too, mixed with anticipation, feeding ...
Engineering
Concrete is an essential material in the construction industry, where it is fundamental to the foundations and structures of dwellings and office buildings, as well as roads, dams and bridges, among many other infrastructure ...
Jan 23, 2024
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Other
When Ellis Monk's wife became pregnant in 2019, the couple became curious about what skin tone their child might have. The subject was of more than passing interest to the sociology professor, some of whose work involves ...
Jul 6, 2022
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Energy & Green Tech
In the realm of electric vehicles, powered by stored electric energy, the key lies in rechargeable batteries capable of enduring multiple charge cycles. Lithium-ion batteries have been the poster child for this application. ...
Nov 2, 2023
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Consumer & Gadgets
The first conviction for 3-D printing a firearm was recently reported in London, not long after 3-D printed masks were used to trick face recognition. Should we be afraid?
Jul 26, 2019
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Robotics
S tudies show that the coronavirus that causes COVID-19 is readily destroyed when exposed to ultraviolet light and heat while on surfaces, such as countertops, chairs, walls and floors. This vulnerability sparked an idea ...
Jun 8, 2020
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Consumer & Gadgets
Airports equipped with full-body scanners, metal detectors and face-recognition technology to identify potential terrorists are starting to make room for devices to target the latest global threat: travelers infected with ...
May 14, 2020
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Robotics
Scientists have developed a tiny mechanical probe that can measure the inherent stiffness of cells and tissues as well as the internal forces the cells generate and exert on one another. Their new "magnetic microrobot" is ...
Jan 25, 2023
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120
Engineering
Skoltech researchers have used an inexpensive 3D-printing technique to demonstrate the manufacturing of a ceramic part of a highly complex shape, which could be used in fuel cells, a promising technology for efficient and ...
Oct 26, 2023
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Energy & Green Tech
Researchers in India have reviewed the state of play when it comes to plastics recycling in the International Journal of Environmental Technology and Management. Their main conclusion is that there are huge inefficiencies ...
Nov 8, 2022
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4
Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than x-rays, in the range 10 nm to 400 nm, and energies from 3 eV to 124 eV. It is so named because the spectrum consists of electromagnetic waves with frequencies higher than those that humans identify as the color violet.
UV light is found in sunlight and is emitted by electric arcs and specialized lights such as black lights. As an ionizing radiation it can cause chemical reactions, and causes many substances to glow or fluoresce. Most people are aware of the effects of UV through the painful condition of sunburn, but the UV spectrum has many other effects, both beneficial and damaging, on human health.
This text uses material from Wikipedia, licensed under CC BY-SA
