Electronics & Semiconductors
Scientists are striving to develop ever-smaller Internet of Things devices, like sensors tinier than a fingertip that could make nearly any object trackable. These diminutive sensors have miniscule batteries which are often ...
Apr 24, 2023
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55
Engineering
When you tap on your phone screen to check something on the internet, you make use of wireless communications technology. With the advent of 5G networks, this technology has made our lives easier than we could imagine. As ...
Feb 28, 2023
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208
Electronics & Semiconductors
The Internet of Things (IoT) is a network based on wireless sensor nodes that provide resources and information. For the long-lasting use of IoT devices, their batteries must be replaced, or a number of power line connections ...
Feb 20, 2023
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7
Computer Sciences
Researchers from Tokyo Metropolitan University have developed a new calibration algorithm for technology that turns common materials into touch sensors. HumTouch detects the current that runs from our fingertips to any partially ...
Feb 6, 2023
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89
Engineering
Recently, the rapid development of optoelectronic devices has made human life more convenient. However, these devices emit large amounts of electromagnetic radiation, which not only endanger human health, but also cause unacceptable ...
Dec 2, 2022
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12
Robotics
Amoebae are single-cell organisms. By means of self-organization, they can form complex structures—and do this purely through local interactions: If they have a lot of food, they disperse evenly through a culture medium. ...
Nov 22, 2022
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77
Engineering
Researchers have developed an automatic drawing machine that uses pens and pencils to draw metamaterials onto paper. They demonstrated the new approach by using it to make three metamaterials that can be used to manipulate ...
Oct 13, 2022
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116
Engineering
An ultrathin invention could make future computing, sensing and encryption technologies remarkably smaller and more powerful by helping scientists control a strange but useful phenomenon of quantum mechanics, according to ...
Sep 12, 2022
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44
Consumer & Gadgets
The pace of change in telecommunications is increasing every year.
Jul 19, 2022
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125
Electronics & Semiconductors
Acoustic waves are slower than electromagnetic waves of the same frequency but, even in the high-speed world of computing and communications, that's not a bad thing. Short acoustic waves are easy to confine in nanoscale ...
Jun 28, 2022
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Electromagnetic radiation (sometimes abbreviated EMR) is a ubiquitous phenomenon that takes the form of self-propagating waves in a vacuum or in matter. It consists of electric and magnetic field components which oscillate in phase perpendicular to each other and perpendicular to the direction of energy propagation. Electromagnetic radiation is classified into several types according to the frequency of its wave; these types include (in order of increasing frequency and decreasing wavelength): radio waves, microwaves, terahertz radiation, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays. A small and somewhat variable window of frequencies is sensed by the eyes of various organisms; this is what we call the visible spectrum, or light.
EM radiation carries energy and momentum that may be imparted to matter with which it interacts.
This text uses material from Wikipedia, licensed under CC BY-SA
