November 2007
Intermediate to advanced
736 pages
46h 32m
English
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PROPERTIES OF SOUND WAVES
The properties of sound waves can be summed up as follows.
- Sound waves are longitudinal waves.
- Sound travels through all states of matter.
- The velocity of sound is maximum in solids and least in gases.
- Sounds which can be heard by human beings are known as audible sounds. Their frequency range is from 20 to 20,000 Hz.
- Sounds of frequencies greater than 20,000 Hz are called ultrasonic sounds. Ultrasonic sounds can be received and emitted by bats.
- Sounds of frequencies less than 20 Hz are called infrasonic sounds. Infrasonic sounds can be received by snakes.
- Sound waves can be reflected. In the phenomenon of reflection, the speed, frequency and wavelength of the sound waves do not change.
- Sound waves can be refracted. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.