Engineering
A trio of researchers from Heriot-Watt University, University Paul Sabatier and the University of Sussex has developed an AI-based device equipped with a laser that can be used to shoot and kill roaches automatically. In ...
Engineering
Lasers have become a major part of our day-to-day lives.
Sep 12, 2022
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385
Energy & Green Tech
A do-it-yourself device that started life as a hobby and took off during COVID-19 could help to unlock the next generation of solar energy, including advanced technology for space missions.
Aug 24, 2022
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99
Engineering
Even though robots don't have eyes with retinas, the key to helping them see and interact with the world more naturally and safely may rest in optical coherence tomography (OCT) machines commonly found in the offices of ophthalmologists.
Mar 29, 2022
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117
Engineering
Additive manufacturing has the potential to allow one to create parts or products on demand in manufacturing, automotive engineering, and even in outer space. However, it's a challenge to know in advance how a 3D printed ...
Jul 1, 2021
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18
Robotics
Minimally invasive surgeries in which surgeons gain access to internal tissues through natural orifices or small external excisions are common practice in medicine. They are performed for problems as diverse as delivering ...
Jan 13, 2021
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25
Engineering
A team of researchers demonstrated that popular robotic household vacuum cleaners can be remotely hacked to act as microphones.
Nov 18, 2020
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756
Engineering
UC Berkeley engineers have given new meaning to the term "working paper." Using inexpensive materials, they have fabricated foldable electronic switches and sensors directly onto paper, along with prototype generators, supercapacitors ...
Jul 9, 2018
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260
Consumer & Gadgets
Always a show-stopping concept: something lightweight that turns objects we have in the real world into virtual touchscreens. A Shanghai-based company wants to roll with that concept, in the form of its special mini-projector, ...
Engineering
Nations around the world are rapidly developing high-energy laser weapons for military missions on land and sea, and in the air and space. Visions of swarms of small, inexpensive drones filling the skies or skimming across ...
Mar 8, 2024
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11
A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.
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