The cow that walked the involute -- Pianos are tachometers -- Gilding the golden rectangle -- The Fibonacci-golden ratio connection -- At the drop of a needle -- A shortcut to a head count -- Treatise on air pressure -- Distance to the horizon -- Probability about birthdays -- A fascinating array of numbers -- What goes up must come down -- Ramifications of leap year -- Miscellaneous tidbits -- The cinematic stroboscope -- Tips for mental arithmetic -- Bombers, bullets and shock waves -- A lunar look -- Some terrestrial measurements -- Some terrestrial navigation -- Fun with the Sun -- Much ado about orbits -- Four for the road.