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History of Technology 1: AC/DC 43 Views
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Description:
"Back in Black," "T.N.T.," "Thunderstruck"...who can forget the timeless AC/DC classics? Wait, this video isn't about the band AC/DC? It's about alternating current and direct current? Well, that's not as fun.
Transcript
- 00:02
Faraday was experimenting with electricity generating dynamos in the [Michael Faraday being electrocuted]
- 00:07
1830s though it wouldn't be long before lightbulbs coffeepot and drones to crash
- 00:12
the day after Christmas came on scene right er not so much it actually took a [Christmas tree falls to the floor]
- 00:16
really really long time throughout the 19th century electric energy was still
- 00:21
something of a wacko dream wackier than that one were you won synchronized
Full Transcript
- 00:26
swimming gold with Adele like super wacky.. So moving on from that stellar dream [Boy with Adele holding swimming gold medals]
- 00:32
let's start by taking a look at dynamic dynamos. Dynamos make electricity by
- 00:37
moving a magnet through a coil of wires at first they were powered by hand [Man powering a dynamo by hand]
- 00:42
cranks but then folks got smarter or maybe their arms just got tired
- 00:47
either way they started powering them with coal and steam over the next 50
- 00:51
years dynamos became more and more efficient and powerful they powered [Dynamo providing electricity for household appliances]
- 00:55
Telegraph systems factories and a handful of showy bling gadgets. By the
- 01:00
1880s Electric Power was ready for its close-up integral in his close-up U.S
- 01:06
inventor Thomas Edison Edison definitely did not invent electricity but he did [Edison opening the first public power station]
- 01:11
open the world's first public power station in 1882 it had one giant dynamo
- 01:17
in it and it powered a few wealthy people's homes in New York City here was [Wealthy New York citizens home lit up brightly]
- 01:21
the problem with Edison's Dynamo though like every other dynamo in the
- 01:24
world that produced direct current or DC power so what was wrong with that well [People wearing suits raise their arms]
- 01:30
DC electricity sends all the electrons down the line at a consistent pace and
- 01:34
in the same direction it's steady but it can't travel very far without losing [Power lines with electricity sparking]
- 01:38
power but by 1887 there was a new kind of electricity on the scene alternating
- 01:44
current or AC with AC power the electrons are constantly switching
- 01:49
direction rather than plotting along like we do after a big bowl of [Man eats at a table and crawls out of the room]
- 01:53
fettuccine alfredo most importantly AC power could be run through a transformer
- 01:57
giving it a major assist with the help of transformers and no not the alien [Transformer character stood beside a power line]
- 02:02
robots times AC power could be sent over long distances unlike DC power this
- 02:09
meant that instead of smaller dynamos on every city block there could just be one
- 02:13
huge AC generating plant that sent power all over the city and the bonus of [An AC generating plant giving electricity to different parts of the city]
- 02:19
knowing all these fun facts well you can impress your friends
- 02:21
the next AC/DC concert guy who came up with the AC power generator was Nikola
- 02:26
Tesla. Serbian science whiz and sorry to all Thomas Edison fanboys but he's kind [Edison pushing Tesla into a big puddle]
- 02:32
of famous for being a world-class jerk in the next part of the story because
- 02:36
surprisingly enough he did not love being out shined by some random Serb. Though
- 02:42
Edison launched a no-holds-barred campaign to fight AC power arguing that [Edison speaking declaring AC power is too dangerous]
- 02:47
it was more dangerous than his generators which was a big whopping fat
- 02:51
lie even hired a professor to give public speeches full of lies about how [Professor teaching a class of students]
- 02:55
awful AC power was well Edison also publicly electrocuted stray dogs with AC
- 03:01
power to prove how awful it was well in the process all Edison actually proved [Edison electrocuting stray dogs with AC power]
- 03:06
was how awful he was in the end Edison lost big time today all the
- 03:11
electricity in our homes comes from power plants generating AC power score one
- 03:16
for Tesla. By 1895 Nikola Tesla had built an enormous hydro electric plant at [Nikola Tesla stood by a hydro electric plant at the Niagra Falls]
- 03:22
Niagara Falls it produced AC power for Buffalo New York and marked the
- 03:28
beginning of a new age of public electricity but hey don't feel too bad
- 03:33
for Edison he has literally a thousand patents to tinker with and he died
- 03:38
a wealthy and world-famous man Tesla had died bankrupt and largely forgotten in a [Tesla on his death bed in a hotel room]
- 03:42
hotel room David Bowie did play him in a movie though you know you win
- 03:46
some lose some [David Bowie acting as Nikola Tesla as electricity rains down]
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