ScienceOnline | Build a Photophone @ScienceOnline | Uploaded October 2014 | Updated October 2024, 6 minutes ago.
Alexander Graham Bell did not consider the telephone to be his greatest invention. This video takes a look at this remarkable man and what he considered to be his greatest invention: the photophone.
Alexander Graham Bell did not consider the telephone to be his greatest invention. This video takes a look at this remarkable man and what he considered to be his greatest invention: the photophone.