Proof-of-concept nanogenerator turns CO₂ into sustainable power
University of Queensland researchers have built a generator that absorbs carbon dioxide (CO2) to make electricity.
Apr 18, 2024
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University of Queensland researchers have built a generator that absorbs carbon dioxide (CO2) to make electricity.
Apr 18, 2024
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Within the Netherlands, your mobile phone only uses the masts of your own provider. Other providers' masts can only be used to reach emergency services. As soon as you cross the border, you can switch on roaming to use other ...
Apr 17, 2024
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A new study from NC State University combines three-dimensional embroidery techniques with machine learning to create a fabric-based sensor that can control electronic devices through touch. The paper is published in the ...
Apr 17, 2024
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Take-Two Interactive on Tuesday told US regulators it is trimming its workforce by five percent and eliminating some video games in production to cut costs.
Apr 17, 2024
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Controlling heat flow is key to enhancing performance in a wide variety of systems. In electronic devices, such as mobile phones or any type of processor, overheating decreases their performance and reduces their lifetime. ...
Apr 11, 2024
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In a world where more and more services and social interaction are based on mobile apps, a smartphone has become close to a necessity. Despite this, some people avoid smartphones and instead use a dumbphone—a traditional ...
Apr 10, 2024
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Cornell University researchers have developed two technologies that track a person's gaze and facial expressions through sonar-like sensing. The technology is small enough to fit on commercial smartglasses or virtual reality ...
Apr 10, 2024
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Much like nutritional labels on food products, "broadband labels" for internet packages will soon tell you just what is going into the pricing of your service, thanks to new rules adopted by the Federal Communications Commission ...
Apr 10, 2024
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Researchers at the Fraunhofer Institute for Applied Optics and Precision Engineering IOF have developed a very compact spectrometer module. It maps spectra from 39 optical fibers onto one camera sensor in a small space. This ...
Apr 3, 2024
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The backbone of every community, transportation connects people to everything from jobs and grocery stores to health care, vital services and social events.
Apr 3, 2024
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A mobile phone or mobile (also called cellphone and handphone, as well as cell phone, wireless phone, cellular phone, cell, cellular telephone, mobile telephone or cell telephone) is a long-range, electronic device used for mobile voice or data communication over a network of specialized base stations known as cell sites. In addition to the standard voice function of a mobile phone, telephone, current mobile phones may support many additional services, and accessories, such as SMS for text messaging, email, packet switching for access to the Internet, gaming, Bluetooth, infrared, camera with video recorder and MMS for sending and receiving photos and video, MP3 player, radio and GPS. Most current mobile phones connect to a cellular network consisting of switching points and base stations (cell sites) owned by a mobile network operator (the exception is satellite phones, which are mobile but not cellular).
As opposed to a radio telephone, a mobile phone offers full duplex communication, automatised calling to and paging from a public switched telephone network (PSTN), handoff (am. English) or handover (European term) during a phone call when the user moves from one cell (base station coverage area) to another. A mobile phone offers wide area service, and should not be confused with a cordless telephone, which also is a wireless phone, but only offer telephony service within a limited range, e.g. within a home or an office, through a fixed line and a base station owned by the subscriber.
The International Telecommunication Union estimated that mobile cellular subscriptions worldwide would reach approximately 4.1 billion by the end of 2008. Mobile phones have gained increased importance in the sector of Information and communication technologies for development in the 2000s and have effectively started to reach the bottom of the economic pyramid.
This text uses material from Wikipedia, licensed under CC BY-SA