Time, Clocks and Gears

Purchase: http://hilaroad.com/video This video resource is designed to support the teaching of gears at an introductory level by explaining the role that gears play in mechanical clocks. Tower clocks, like Big Ben, use an elaborate set of gears to display time. The video includes information about Foliot and Pendulum clock mechanisms. This video supports "Gear Basics" a video introducing gears, available at our website http://hilaroad.com.

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  Education

[neelamkumari2k]

how are the pendulum oscillations sustained?

i meant that the oscillations may die out because of friction, how is this prevented?

[ScienceOnline]

Good question - the escapement mechanism is designed to "kick" the pendulum on each stroke. The force to do this comes from the suspended weight.

[sxdc2w3e]

great post. thanks.

[makeiteasyable]

indeed.

[Pinkie Pie]

Hi guys, im trying to make a clock for my parents for christmas, and im wondering how many teeth does a second hand have? A minute hand? And hour hand? If it did say in the video, im sorry i must have missed it. Thanks.

[Jojo110662]

Fascinating! May I know where I can purchase the clock kit that you used for illustrating gear mechanism? Thank you.

[Doggieman1111]

nice documentary thanks

[hizhole]

0:36 who gets to justify that the specific mechanics that make the movement tick over, thus creating what is deemed to be a second of time?

[Tricyklist]

Clocks are wound regularly to ensure the weights never reach the ground. Most clocks run for a week with a reserve of one day. (so-called 8 day clock) The clock weights can then be wound up again on a specific day of the week. Some clocks only run for 30 hours. Requiring daily rewinding with a few hours reserve. It is amazing to think that some clocks have been wound laboriously for centuries without a break. (except for occasional repairs)

[Figlitiblitification]

Excellent work! I learned a lot about gears and clocks. Good job! Thank you.

[Gytax0]

Thank you for all these videos. I think, if you would get enough advertising, you would have like a million viewers.

[Lurk58]

great video mate. If you ever get to NZ check out the clock museum in Whangarei.

[blueshift314]

what happens when the weight touches the ground? wouldnt the clock stop? how do they fix this problem