Did you know A.D. Blumlein...

electronic engineer, one of the best in the history of mankind, inventor of the modern stereo disc cutting method of 2 deegrees of freedom at 90 degrees to each other for each left, right channel while cutting the groove with music, inventor of the coincident mic pair technique with each directional mic at 90 degrees to the other... On the first date with his to be wife, he took her on a trip to the sky, flying with her an aeroplane... Reference: The Life and Times of Allan Dower Blumlein - Rusell Burns - IEE history of technology series