The Wheel (~4000 BC, and independently in the New World)
Failed Wheels (The Bhaskara Wheel, 1150)
Toilet (John Harrington's Flush Toilet, 1596)
Bicycle (Starley's Modern Bicycle, 1885)
Energy Using Sprinklers and Differences in Air-Pressure
(Philip Carson's Downdraft Energy Tower), 1975, introduced 2013
2 comments:
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Thank you for the head's up. For now, I'm afraid I've found everything I can do about browser compatability. I've even tried mobile format (.xhtml) for most of my pages, to make sure I have an audience.
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