Joke Of The Day: Life After Death

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Jun 092014
 
Rubber Chicken “Do you believe in life after death?” the boss asked one of his employees.

“Yes, sir,” the clerk replied.

“That’s good,” the boss said. “After you left early yesterday to go to your grandmother’s funeral, she stopped in to see you.”

 

 

Pendulum Rolling Ball Clock

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Jun 082014
 

Using simple wood pieces, gears, and wire, Turnvater Janosch invented a completely mechanical pendulum rolling ball clock.

Enjoy!

A homemade mechanical rolling ball clock (english, deutsche Version)

The clock runs for 12 hours, driven by a weight of 2.5 kg sinking approx. 1 meter during that time.

Every minute a marble is lifted up and goes down a marble run with three flipping traps that count marbles for minutes, five-minute-steps and hours.

The timekeeping element is a second-pendulum with a pinwheel escapement.

The clock achieves a drift of less than 1 second per day.

via

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