Very little, even today people do not really use videophones very often, even if their phones have the facility.
the photophone
The Photophone, also known as a radiophone, was invented jointly by Alexander Graham BellHe said it was his greatest invention.It is a means of communication...through the transmission of light.
He invented the telephone, the photophone, and the original audiometer.
A photophone is used to allow speech into a light beam. The invention was released in Feb. 19th, 1880 by Alexander Graham Bell.
I think it used only light to transmit messages instead of electricity... I could be wrong though you may want to try wikipedia
telephone and patent issues Bel and decibel photophone Metal detector Experimental aircraft hydrofoil
Live life to affect the world, not to have the world affect you.
yes Alexander graham bell invented the photophone along with the telephone which made his rich and famous very fast. It has been suggested that Elisha Gray invented the telephone and lodged his patent at the same office, and just before Bell. The diagrams on Bell's application, look uncannily like Gray's. Although Gray applied before Bell, the credit went to Bell.
Art Can Affect Us Art can affect us in many ways.Such as the world the world is a hunormos panting.
No bush baby do not affect the world there actually pretty harmless i think
it affect world travel by all the rain that can cause accidents
A list of the inventions I know of is: Telephone Graphaphone Wheat husker Photophone Metal detector Hydrofoil I may have missed some out, but I hope this helped anyway!