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History of Technology Videos 160 videos

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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. 

Language:
English Language

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

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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