A bipolar junction transistor (bipolar transistor or BJT) is a type of transistor that uses both electron and hole charge carriers. In contrast, unipolar transistors, such as field-effect transistors, only use one kind of charge carrier.
Google Map of 2017 Total Eclipse in Nebraska. Google Map of 2017 Total Eclipse in Nebraska. (Click to use interactive map) The map above links to an interactive Google map showing the visibility of the Total Solar Eclipse of 2017 Aug 21 in Nebraska.
Even more compelling, a transcontinental, total eclipse of the sun that passes from coast to coast has not occurred in the U.S. since 1918. On August 21, 2017, a total solar eclipse will be visible along a thin, roughly 100 mile-wide path that runs diagonally across America from Oregon to South Carolina.