A deep black ceramic mug covered with some of history's most famous and important mathematical formulas, making it a superb gift for any mathematician, physicist, or math teacher. You get gems such as Newton's Second Law, Planck's Equation, Hubble's Law, the Fourier Transform, and the mother of all equations, Einstein's General Theory of Relativity. Perfect for any hot beverage: coffee, tea, hot chocolate, pumpkin spiced beverage. • 14 oz. Ceramic coffee cup with a comfortable handle. • All of our mugs come in a beautifully designed, colorful box. • UPG is a novelty gift company specializing in smart and funny gifts. Check out our shop for all types of quirky fun stuff! Timeless Keepsakes~ Trendy Kitsch~ We Have It All