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Just as vinyl records have a pattern of grooves and ridges that contain the sound, talking tapes - which were originally developed in 1918 - work on the same principle. Along the length of the tape is a fine pattern of grooves, and when you run your finger nail along the tape, you can 'play' the encoded message.
Posted 1 day ago by glennMC in category: interesting   Comments (0)


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Australian entrepreneur Craig Wright has publicly identified himself as Bitcoin creator Satoshi Nakamoto.
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Posted 1 day ago by Anchorman in category: impressive   Comments (1)



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A heavy steel vault protects 2 cassettes that each hold over 1,000 bills. A sophisticated assemblage of sensors, rollers and conveyors ensures the correct number of bills is distributed to the account holder.
Posted 1 day ago by JennaFlex in category: interesting   Comments (0)


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Posted 1 day ago by nkchandler in category: fascinating   Comments (0)