Remove 7 letters from this seq...
Remove 7 letters from this sequence (REEVSWSPONSILBYILHITY) to reveal a familiar English word.Correct answers: 43
The first user who solved this task is Nasrin 24 T.
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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. |