Gabriel's Horn
Gabriel's Horn (also called Torricelli's trumpet) isfigure invented by Evangelista Torricelli which has infinite surface area, but finite volume. Attimewas discovered (predating calculus), this was consideredparadox.Gabriel's hornformed by takinggraphy = 1/x, withrange x ≥ 1 (avoidingasymptote at x = 0), rotatingin three dimensions aboutx axis.
