Interesting Engineering on MSN9 天
Viruses make sound at a frequency 1 million times higher than humans can hear
Scientists used an all-optical method to detect and dynamically track the natural vibrational frequencies of a microorganism ...
Simon Fraser University2 年
Frequency and Pitch
Today, a standard demonstration is to excite the plate with a single frequency tone generator that continually rises in frequency. When it corresponds to a mode of vibration in the plate, the nodal ...
BBC3 个月
Introduction to sound waves
A sound wave is a vibration that travels through a solid, liquid or gas such as the air or water. A loud sound has a large amplitude, a high pitched sound has a high frequency. Musicians and ...
Business Insider8 年
Listen to the inaudible frequency could explain why some people see ghosts
A specific tone, called the 'ghost frequency' could create a vibration that shakes the eyes and creates visual distortions. Follow Tech Insider: On Facebook More from Tech Up to 18% of Americans ...