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| Ejs Open
Source Sound Travel FireWorks Model http://weelookang.blogspot.sg/2011/08/ejs-open-source-sound-travel-fireworks.html author: fu-kwun hwang and lookang https://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_fireworkwee.jar https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_users_sgeducation_lookang_fireworkwee.jar |
Ejs Open Source Sound Travel FireWorks Model by Fu-Kwun Hwang remixed version by lookang
reference:
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1220.0
applet not embedded to prevent the sound from interfering from reading the post :)
Full screen applet
Java Simulation above is kindly hosted by NTNUJAVA Virtual Physics Laboratory by Professor Fu-Kwun Hwang
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2262.0
alternatively, go direct to http://www.phy.ntnu.edu.tw/ntnujava/index.php?board=28.0
Collaborative Community of EJS (Moderator: lookang) and register , login and download all of them for free :) This work is licensed under a Creative Commons Attribution 3.0 Singapore License
Author: Fu-Kwun and lookang
changes
redesign the simulation a little bit
set td = 0;
add check boxes for vision of flying in air and exploded to be compared with sound check-boxes
activate time
add background color to buttons and slider
add hints
vi is initial velocity of firework projectile
vf is exploding projectile velocity
add input field for game like checking of answers so now the answer is assessed against computed answer of delta s= 330*delta t assuming speed of sound in air is 330 m/s
enjoy!
here is a you tube on fireworks listen to the sounds it makes as it moves through air and the explosion at the end.