Pronounced u-art, and short for universal asynchronous receiver-transmitter, the UART is a computer component that handles asynchronous serial communication. Every computer contains a UART to manage the serial ports, and some internal modems have their own UART.
1 Color. 2  Color of a rock depends on the minerals present and on their grain size. 3  Generally, rocks that contain lots of feldspar and quartz are light colored, and rocks that contain lots of pyroxenes, olivines, and amphiboles (ferromagnesium minerals) are dark colored.
1 Iron (Fe) i s extremely reactive with oxygen. 2  If we look at the oxidation state of Fe in the rock record, we can infer a great deal about atmospheric evolution. 3  Archean-Find occurrence of minerals that only form in non-oxidizing environments in Archean sediments: Pyrite (Fools gold; FeS 2), Uraninite (UO 2). Iron (Fe) i s extremely reactive with oxygen. 2  If we look at the oxidation state of Fe in the rock record, we can infer a great deal about atmospheric evolution. 3  Archean-Find occurrence of minerals that only form in non-oxidizing environments in Archean sediments: Pyrite (Fools gold; FeS 2), Uraninite (UO 2).