Dynamics Vibration Boomerangs Clocks ClimateChange Geoengineering Ch4 documentaries Dambusters, Escape from Colditz, Zeppelins YouTube http://t.co/cI0pABcDYd
Tumble dryer duct works as a slinky spring!
Corpus Christi Clock - Chronophage. Internal workings, including drive motor synchronised to a laptop
Drinking Birds - they're drinking again now that the air temperature and humidity are a bit more reasonable
natural convection, hot air goes out as cold air comes in. The fun bit was making the windmills
heating the whole house with natural convection
Meanwhile the Corpus "Clock" remains silent...
Here is my nine-year-old's approach to avoiding the tears when chopping onions
Speed of earth around the Sun, fluctuates because orbit is elliptcal and because the Moon and Earth move together around each other
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