Chemists discover how blue light speeds blindness
Blue light from digital devices and the sun transforms vital molecules in the eye's retina into cell killers, according to optical chemistry research at The University of Toledo.
Blue light from digital devices and the sun transforms vital molecules in the eye's retina into cell killers, according to optical chemistry research at The University of Toledo.
Biochemistry
Aug 8, 2018
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8625
A team of physicists has discovered an electrical detection method for terahertz electromagnetic waves, which are extremely difficult to detect. The discovery could help miniaturize the detection equipment on microchips and ...
General Physics
Jan 27, 2020
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5277
(Phys.org) —While most people know that using a cell phone means that the phone's location is being recorded, a new study has revealed just how little information is required to determine an individual's personal identity. ...
(PhysOrg.com) -- Cell phones are great, but one of their limitations is the size of the screen, which of necessity has to be small. To get around this problem, engineers have been for years toying with the idea of building ...
Got an iPhone in your pocket? Then you might be storing even more personal information than you realize. And some of it could be used against you if you're ever charged with a crime.
Consumer & Gadgets
Sep 1, 2010
9
4
Samsung Mobile and T-Mobile USA today announced the upcoming availability of the Samsung Memoir, a full touch-screen mobile phone equipped with an 8-megapixel camera and premium multimedia features, placing it among the highest ...
Consumer & Gadgets
Feb 6, 2009
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0
(AP) -- Owners of the iPhone will be able to legally unlock their devices so they can run software applications that haven't been approved by Apple Inc., according to new government rules announced Monday.
Software
Jul 26, 2010
9
0
(PhysOrg.com) -- A new breed of rechargeable zinc-air batteries is soon to be available, and may replace lithium-ion batteries in cell phones, laptops and other consumer items. Lithium-ion batteries store only a third of ...
US lawmakers unveiled a bill Wednesday to enable law enforcement to identify users of pre-paid cell phones, charging that anonymity makes the devices attractive to terrorists, drug kingpins and gangs.
Telecom
May 26, 2010
9
0
(PhysOrg.com) -- An Environmental Working Group (EWG) team has released a consumer guide on the radiation levels emitted by over 1,000 cell phones sold in the U.S. The guide is the most comprehensive ever published, and is ...
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