Personal identity verification (PIV) card

A personal identity verification (PIV) card is a type of identification card that is issued by the United States government to employees and contractors. The card contains a variety of information about the cardholder, including their name, photograph, and fingerprint. The card is used to verify the cardholder’s identity and to provide access to government … Read more


A half-life is the time it takes for a substance undergoing decay to decrease by half. The half-life of a substance is a constant, regardless of the amount of substance present. Why is it called Half-Life? The term “half-life” is used to describe the amount of time it takes for a given quantity of a … Read more


PageRank is a metric used by Google to measure the quality and quantity of links pointing to a given webpage. A higher PageRank indicates a higher quality and quantity of links. Is Google still using PageRank? Yes, Google is still using PageRank as one of the factors it considers when ranking websites in its search … Read more