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Currently Browsing: Results for Tag "waves"

An ‘acoustic prism’ can split sound the way a regular prism splits light

An ‘acoustic prism’ can split sound the way a regular prism splits light Here’s a new invention that, while potentially useful, is even more interesting as an illustration of the nature of sound: the acoustic prism.Now, researchers have created a similar device for sound, which passively and naturally splits sounds into their component frequencies.

With MIT’s new imaging tech, now you can judge a book right through the cover

With MIT’s new imaging tech, now you can judge a book right through the cover Ten years ago, MIT researchers demonstrated they could use terahertz imaging to read a letter inside a sealed FedEx envelope.It starts out using terahertz radiation, which is a band of EM radiation that has lower energy and longer wavelength than the visible and IR bands.

U.S. Army wants to keep you alert at the wheel by reading your brain waves

U.S. Army wants to keep you alert at the wheel by reading your brain waves Well, forget about cranking loud music, drinking convenience store coffee, and keeping your windows rolled down, because the United States Army has an alternative solution: reading your brain waves.“Since EEG signals directly measure the brain activities, theoretically EEG based approaches should be more reliable [than other solutions],” co-author Dr.