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History of Electricity

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Subido el 28 de mayo de 2007 por EducaMadrid

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NASA Why? Files segment exploring the history of electricity with Dr. Textbook.

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Whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa. 00:00:00
And now, the history of electricity. 00:00:07
Here's Dr. Textbook. 00:00:10
Hello. 00:00:13
Maybe you think that one or two people discovered electricity. 00:00:15
Well actually, electricity is all around us, it occurs in nature. 00:00:19
Oh, ah! 00:00:23
Very funny. 00:00:25
An electric buzzer. 00:00:27
Now, you probably heard some story about Ben Franklin flying his kite. 00:00:29
Well, don't believe for one second that Mr. Franklin was standing out in a wet field with lightning raging about him, holding on to a brass key. 00:00:33
No, he actually was standing in the distance, observing the kite, taking notes, and what he found out was that lightning is actually an electrical spark. 00:00:40
Now, on to Alessandro Volta. 00:00:50
Mr. Volta was the first man to build a battery, and he did this by taking small plates of copper and zinc and putting moist pieces of paper in between it. 00:00:53
So, as an ode to Volta, I will take this nine-volt battery and stick it on my moist tongue. 00:01:02
Not a very good idea. 00:01:10
Thomas Edison built a generator to make electrical current. 00:01:14
But it actually was a man called Nikola Tesla who found out that by alternating the electrons in an electrical circuit was a better way to produce electricity. 00:01:18
And this we call alternating current. 00:01:27
And the first place this occurred was in Niagara Falls. 00:01:30
Wait! There's more to learn! 00:01:33
This has been the History of Electricity. 00:01:37
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Idioma/s:
en
Niveles educativos:
▼ Mostrar / ocultar niveles
      • Nivel Intermedio
Autor/es:
NASA LaRC Office of Education
Subido por:
EducaMadrid
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
439
Fecha:
28 de mayo de 2007 - 15:34
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Duración:
01′ 42″
Relación de aspecto:
4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
Resolución:
480x360 píxeles
Tamaño:
10.36 MBytes

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