Speed of Light Communication. How The Telegraph Changed The World

[@stejer211]

This is an awesome channel that deserves many more views!
Subscribed and binging.

[@warmbrucuriosity]

Thanks!

[@Life_Is_A...]

6:51 That's a genius idea actually.

[@alexpatron3024]

I'm curious as to how that needle system actually worked.

[@warmbrucuriosity]

There are various examples still in existence. A good explanation is in this video at the 23rd minute.
ua-cam.com/video/GeMkOruNht8/v-deo.html

[@macraghnaill3553]

Very interesting

[@warmbrucuriosity]

Thank you. More are on the way.