CINEMANIA: Guess the movie title
Film was made in 1987.Correct answers: 40
The first user who solved this task is Eric Newton.
#brainteasers #movie #film #cinemania
PhotophoneIn 1882, the photophone was demonstrated by Alexander Graham Bell and Charles Sumner Tainter. In their device, a mirrored silver disc was made to vibrate by speech from a speaking tube. Light reflected off the disc was focused by a parabolic dish onto a selenium photocell. The variations in the reflected light were converted into electrical signals carried to headphones. |