Parachute
Leonardo da Vinci sketched a parachute design in the margin of his sketch book with the following text:
If a man is provided with a length of gummed linen cloth with a length of 12 yards on each side and 12 yards high, he can jump from any great height whatsoever without injury.
In 1617, the first successful parachute jump was made from a tower in Venice.
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Valentina 10 month s ago
#40 Early SONAR maybe but not RADAR.
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Frederick 10 month s ago
Valentina,
When there is drama in the Café. My Wife goes like this.
When there is drama in the Café. My Wife goes like this.
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3.
Derrick 10 month s ago
#21 man I don't know what kind of cars have you had since but practically all cars have that option for the past twenty years.
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Beedy 10 month s ago
Derrick,
twenty, not thirty-five.
twenty, not thirty-five.
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Dacey 10 month s ago
#12 Can anyone date this photograph?
Thanks in advance!
Thanks in advance!
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Beedy 10 month s ago
Dacey,
it's a handsome photograph, I'll give it that, but for now I'd rather date women, thanks.
it's a handsome photograph, I'll give it that, but for now I'd rather date women, thanks.
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7.
Dotty 10 month s ago
#9 Tesla fanboys will believe anything. That idea of electricity through the air is dangerous and so busted. 
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Gerrie 10 month s ago
Quote: Dotty
Chatty Cathy
You're assuming that all frequencies of microwave radiation are dangerous. Tesla lived to a 86 years, despite his exposure to it. Cell phone towers use microwave frequencies.
When there is drama in the Café. My Wife goes like this.
twenty, not thirty-five.
Thanks in advance!
it's a handsome photograph, I'll give it that, but for now I'd rather date women, thanks.
You're assuming that all frequencies of microwave radiation are dangerous. Tesla lived to a 86 years, despite his exposure to it. Cell phone towers use microwave frequencies.