If you’ve ever had an estate agent measure up your house you’ve probably seen that natty little box they wield, zapping the walls in an attempt to get a grip on the dimensions of your rooms.
You’re not going to exactly want to replace your tape measure, but as far as iPhone hacks go, this is about as cool as it gets: Acoustic Ruler allows you to measure distance up to 82 feet using a ...
Ultrasonics or ultrasound is a radar-like system that uses ultrasonic signals at frequencies above those typical for human hearing, usually above 16 to 20 kHz. The 40- to 70-kHz range tends to be most ...
Ultrasonics or ultrasound is a radar-like system that uses ultrasonic signals at frequencies above those typical for human hearing, usually above 16 to 20 kHz. The 40- to 70-kHz range tends to be most ...
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