Sound intensity, loudness and quality compared, plus vacuum experiment

[duoheer]

Hey, wat are the differences among the following?
1.intensity of a sound wave
2.loudness of a sound wave
3.quality of a sound wave

And also,can u give me an experiment that would determine whether sound can travel thru a vacuum?
thank you guys so much

 

[chroot]

Intensity refers to actual amplitude -- that is, the actual pressure difference between the crests and troughs of a sound wave.

Loudness refers to the subjective human perception of loudness; different people may find different sounds loud or not.

You can put a buzzer in a bell jar, then evacuate all the air with a vacuum pump. As the vacuum becomes better and better, the sound of buzzer all but disappears.

- Warren