3 موسم
18 قسط
The Secret Life of Machines - Season 2 Episode 3
All clocks and watches work by 'counting' some event which takes a fixed period of time, like the swings of a pendulum. The higher it goes the stronger the pull of gravity and the faster it comes back - so the swings always take a fixed time. The Quartz crystal in a watch vibrates at a fixed speed in a similar way. Episode Contents: Models: A stick. Demonstration of liquid crystal technology with metal coated glass plates and polarized sunglasses. Machines: Many of Tim's large outdoor clocks. A water clock by Rex. Guests: A 400 year old pendulum alarm clock. Various antique pocket watches. Different watch models track the evolution of quartz and digital watches. Films: Goofy 1940's wristwatch commercial ("Hey kids come on a running!") Almost as silly 70's ad for the first bulky LED watch. Extro: Oven door blooper and a melting digital watch.
- سال: 1993
- ملڪ:
- نوع: Documentary
- اسٽوڊيو: Channel 4
- چاٻي: invention, engineering, educational, machine
- ڊائريڪٽر: Tim Hunkin
- اداڪار: Tim Hunkin, Rex Garrod
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