Mr. Wizard's World
Ultrasonic Cleaner, Manhole Covers, Jar over Candle, Bicycle Gears, Oysters, Balloon Bottle and more
TV-G
S3 • E4 Jan 3, 1986 25mUltrasonic Cleaner, Manhole Covers, Jar over Candle, Bicycle Gears, Support and Balance, Harvesting Oysters, Balloon into a Bottle. ULTRASONIC CLEANER - Mr. Wizard and Christian discuss supersonics and ultrasonics. Several demonstrations ensue. MANHOLE COVERS - You've seen manhole covers on the street many times.
