Terahertz (THz) is a unit of measure of frequency that is equal to 1 trillion hertz (1012 Hz). It usually refers to the frequency of an electromagnetic wave, which is a part of the electromagnetic spectrum invisible to the naked eye that lies in between the microwave and the infrared range. T-rays are an example of a specific part of the spectrum...
The Android cell phone is a cell phone running the Android OS. A typical Android cell phone is a smartphone with a touch screen interface, multiple connectivity options, Internet browsing capabilities, support for video playback and a camera.
The term Android cell phone is actually a generic term. Unlike iPhone phones or BlackBerry phones, which always refer to phones manufactured by Apple and RIM (Research In Motion) respectively, Android phones may refer to a wide selection of phones from different manufacturers, including Motorola, HTC, Lenovo, LG, Samsung and Sony Ericsson. Some of the Android cell phone models gaining a lot of public attention include Motorola Droid X, HTC Dream, Google Nexus One and Samsung Galaxy. Android sales have been showing the fastest growth among smart phones since the first Android phone was released in 2008. The first Android phone was the HTC Dream, also called the T-Mobile G1. Android cell phone applications can be downloaded from the Android Market.
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