Name: History of Static Electricity (Language of Coins: 6/16)
Uploaded: 2013-07-26T06:19:12.000Z
Duration: 9 min 2 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

widely regarded as the first Greek philosopher,

as he was the first to give a purely natural explanation

A key observation he made was that certain stones --

such as amber -- when rubbed against fur,

The amber seemed to emit an invisible force

He assumed this rendered the amber magnetic,

a [property] he observed when playing with lodestones,

Many after him observed that contact or friction

but also in the potential for shocks to occur.

which reversed the imbalance created by the friction.

we were also fascinated with lighting bolts --

Most cultures assumed this was a divine force,

Up until the 17th century, our descriptions of it

varied from an invisible, intangible, imponderable agent --

or even threads of syrup  which elongate and contract.

And it was Benjamin Franklin who, in 1752,

set  out to prove that there was a connection

between lightning and these tiny shocks due to friction

where the  thread was wet, he tied an iron key.

and  experienced a series of small shocks --

identical to the ones created by contact with fur.

as these household shocks -- but on a massive scale.

would allow or accept discharge -- such as gold or copper --

And interestingly,  these materials are also

such as rubber -- [which we call] electrical 'insulators.'

And we also began trying to measure this force

And when we rubbed an insulator against fur,

[the insulator]would [appear to] pull on [the ball],

causing a deflection [from the ball's normal resting position].

we noticed [that] this deflection increased --

We also noticed that the shape of insulators

And amazingly, it was found that conductors --

would transmit this pulling effect over a distance.

This was demonstrated by running a long wire

between the pith ball and the charged insulator.

When the [charged] object was brought near the wire,

When we later touch the wire with our finger,

a discharge occurs, and the pulling stops,

And in 1774, French inventor,  George-Louis Le Sage,

was one of the first on record to actually set up this idea.

He sent messages through an array of 26 wires --

each wire representing a letter of the alphabet.

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History of Static Electricity (Language of Coins: 6/16)

assume

massive

category

force