Guess the Game Name
[4988] Guess the Game Name - Look carefully the picture and guess the game name. - #brainteasers #games - Correct Answers: 23 - The first user who solved this task is Fazil Hashim
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Guess the Game Name

Look carefully the picture and guess the game name.
Correct answers: 23
The first user who solved this task is Fazil Hashim.
#brainteasers #games
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The only thing wrong with a perfect drive to work is that you end up at work.
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Ultrasonic alarm

In 1953, the first U.S. patent for a burglar alarm operated by ultrasonic sound was issued to Samuel Bagno of New York City (No. 2,655,645) on a system for movement detection in a confined space by intruders or fire. It was manufactured as the Alertronic and first sold in Jun 1950. A sound source produced waves of 19,000 hertz, a frequency too high for normal human hearing. An intruder could be detected by the alarm by a difference in frequency of the reflected waves from the moving body (the Doppler effect). The device would then sound an alarm.
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