NTNUJAVA Virtual Physics LaboratoryEnjoy the fun of physics with simulations! Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
July 18, 2019, 10:40:04 pm

You cannot always have happiness but you can always give happiness. ..."Mother Teresa(1910-1997, Roman Catholic Missionary, 1979 Nobel Peace Prize)"

 Pages: [1]   Go Down
 Author Topic: request for applet2  (Read 7422 times) 0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
peacenlove
Newbie

Offline

Posts: 9

 « Embed this message on: November 19, 2009, 07:18:53 am » posted from:,,New Zealand

hi again an new question

is it possible to calculate opposite phase or ? of any given frequency

and will that opposite phase fequency cancell the sound of its original

sorry i bet these sound (scuse the pun) like stupid questionss
 Logged
peacenlove
Newbie

Offline

Posts: 9

 « Embed this message Reply #1 on: November 19, 2009, 07:48:05 am » posted from:,,New Zealand

i found this
The movie at left shows how a standing wave may be created from two travelling waves. If two sinusoidal waves having the same frequency (wavelength) and the same amplitude are travelling in opposite directions in the same medium then, using superposition, the net displacement of the medium is the sum of the two waves. As the movie shows, when the two waves are 180° out-of-phase with each other they cancel, and when they are in-phase with each other they add together. As the two waves pass through each other, the net result alternates between zero and some maximum amplitude. However, this pattern simply oscillates; it does not travel to the right or the left. I have placed two dots on the string, one at an antinode and one at a node.  http://paws.kettering.edu/~drussell/Demos/superposition/superposition.html

is it possible to make an applet showing this with a frequency and opposite phase calculator
sine wave within normal hearing range
 Logged
peacenlove
Newbie

Offline

Posts: 9

 « Embed this message Reply #2 on: November 19, 2009, 08:49:49 am » posted from:,,New Zealand

(100 Hz – 11000 Hz).
 Logged
Fu-Kwun Hwang
Hero Member

Offline

Posts: 3082

 « Embed this message Reply #3 on: November 19, 2009, 12:28:28 pm » posted from:Taipei,T'ai-pei,Taiwan

 Logged
peacenlove
Newbie

Offline

Posts: 9

 « Embed this message Reply #4 on: November 20, 2009, 03:53:12 am » posted from:,,New Zealand

thanks so much
 Logged
 Pages: [1]   Go Up
You cannot always have happiness but you can always give happiness. ..."Mother Teresa(1910-1997, Roman Catholic Missionary, 1979 Nobel Peace Prize)"