Who invented the electric light bulb?

... and it wasn't Thomas Edison!

Photo: Unknown/Wikimedia

Believed to be in the Public Domain

(Age - copyright expired)

Joseph Swan

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In 1850 Swan began working on a light bulb using carbonised paper filaments

in an evacuated glass bulb.

By 1860 he was able to demonstrate a working device.

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"There is a young madman proposing to light the streets

of London - with what do you suppose - smoke!"

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Sir Walter Scott