What they are: A logarithm is the exponent you raise a base to in order to get a number, acting as the inverse of exponentiation. Why they matter: They simplify multiplication, division, and roots ...

Taylor Swift’s fans know her favorite gemstone is an opal, so they may have been intrigued to see the variation “Opalite” as the title of the third track on her 12th studio album, “The Life of A ...