About 22% of the energy used in the U.S. comes from natural gas. There are about 300,000 miles of natural gas pipelines in the lower 48 states and 425,000 gas producing wells. The history of natural gas.
thru-hole. A circuit board packaging technique in which the leads (pins) on discrete components and chips are inserted through holes in the printed circuit board and soldered from beneath.
Transistors (portmanteaux of âtransmitterâ and âresistorâ) rely on a quirk of quantum mechanics known as an âelectron hole.â A hole is the lack of an electron at a spot where one could exist in semiconducting material.