NIST Nobel laureate Bill Phillips talks to students about how to use laser light to make the world’s best clocks. The lasers cool a gas of cesium to near absolute zero for ultra accurate measures of the atoms’ vibrations or “ticks.”

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http://www.youtube.com/vinteachesmath This video will focus on a absolute value inequality problem. In particular, this video will emphasis the need to set up two equations in order to solve an absolute value inequality. High school students taking a course in Algebra 2/Trigonometry should find this absolute value inequality problem helpful. This video is also relevant for…

SSC Board Maharashtra Algebra Ex 2.7. Relation between Roots (alpha and beta) and Coefficients of the quadratic equation is discussed with examples. This is a revision module. Pause video to take notes.

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