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History of Technology Videos 160 videos
What's the deal with wind? And why does it have to be so...windy?
How did people move stuff around before the wheel was invented? More importantly, why didn't they take a break for a few minutes from moving stuff...
History of Technology 1: Post Mills and Tower Mills 68 Views
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Description:
Windmills: they're good for more than just tricky miniature golf holes.
Transcript
- 00:03
The kinetic energy of the wind can be put to use if we can [The 'wind' dancing round]
- 00:07
snatch it from the atmosphere. We tried to do that once and we looked pretty stupid, [The 'wind' is cuaght and put in a bag]
- 00:11
luckily windmills were built for that task. But wind is a temperamental thing [Wind turbine]
- 00:16
it might blow really hard one day then disappear for a week, also it's just [Boy holds on to a tree and then the wind stops]
- 00:21
usually invisible good for it when it's having a bad hair day, bad for humans
Full Transcript
- 00:25
trying to harness it. Well still if winds all we got we might as well make do.
- 00:30
People made many varieties of windmill in their quest to laze about and let [Man sat in a deckchair as 'mother nature' turns the windmill]
- 00:35
mother nature do the work for them, and in their quest to make the best
- 00:39
miniature golf courses ever. Post mills were the first kind of windmill in [Miniature gold course full of windmills]
- 00:43
Europe appearing some time in the 12th century. Well a post mill was built above
- 00:48
a central post so it could pivot. With a pivoting mill you could turn to face the [Wind changes sides and the mill follows]
- 00:53
wind, well this was a seriously big deal in Northern Europe where wind patterns are
- 00:58
constantly shifting. If folks couldn't turn their mills they had a really ugly lawn
- 01:03
ornament that just sat there 75% of the time. Well post mills were the most common
- 01:07
type of mill for centuries, they were cheap to build and they usually worked. [People building a post mill]
- 01:12
Then the tower mill hit the scene with a bang. In a tower mill the main body of [Tower mill drops from the sky]
- 01:16
the mill is fixed to the ground and only the very top section turns in the wind.
- 01:21
They usually include a second smaller set of sails on the side of the mill and
- 01:26
these would automatically turn the big sales to face the wind less work for
- 01:30
human beings all you betcha, and isn't that always the goal.. but we're asking [Person in a hammock]
- 01:35
Siri, come on, you thought we were gonna think about something... Anyway tower mills
- 01:39
could be way bigger because they didn't have to spin around completely, the bigger [Much bigger tower mill next to a post mill]
- 01:43
windmill is the more power it generates they definitely gave the old post mills the
- 01:48
short meal syndrome. Well power mills were all that jazz until the Industrial [Post mill looks jealous]
- 01:53
Revolution when wind and water got kicked to the curb in favor of steam and coal
- 01:57
but windmills still had some uses. Well in the mid-1850s a new kind of windmill
- 02:02
was born wind pumps which use wind power to pump water out of deep wells. [Metal windmill spinning]
- 02:08
They were small metal and had lots of blades rather than three or four sails, in the
- 02:14
mid 19th century Europeans made their way to some hostile environments, the [Europeans travelling across the world]
- 02:18
American Southwest, Australia and South Africa. To farm the way they were used to
- 02:23
farming they needed more water. Well old-school European windmills could pump [Man looking for pizza in the desert]
- 02:28
water out of wells but what were they going to build those huge clunky
- 02:33
mills out of... Cacti? Tumbleweeds? The shattered dream of the indigenous people
- 02:37
they conquered and destroyed.. Well they probably would have tried that last one [Windmill made of hopes and dreams]
- 02:42
if they thought it'd work instead the Halliday wind pump was invented. They were
- 02:46
metal lightweight cheap and soon they were everywhere picture a scenic little [Halliday wind pumps appearing]
- 02:51
farm in Texas with a squeaky old windmill turning gently in the wind.
- 02:55
Yeah well those metal wind pumps were so common that they changed the landscape
- 02:59
of the American West and the stage sets of many future productions of Oklahoma. [Halliday wind pump on stage]
- 03:04
(Singing) "Oklahoma, blowing in the wind" all that. Yeah well theatre fact, all actors know
- 03:10
they're only in a legit production if it features a Halliday wind pump.
- 03:15
Yeah try harder there next time Hamilton. [Footage of a play]
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