User:1sfoerster/enes100/fall2014/Impulse demo

Problem
An impulse in physics is used to define and document how objects collide. In the class "dynamics" an impulse occurs when two objects collide. More broadly, the impulse response of electro/mechanical device can be used with the convolution integral to predict the response to any form of input change. The goal here is to begin measuring rather than predicting impulse response.

Most impulses occur in air. When they occur in water, the phenomena is called "cavitation." This is included here, even though a vacuum causes cavitation (low pressure, no temperature) rather than the impact in air.

Cavitation serves as a disadvantage in submarines that intend to remain hidden and in boat props and water pumps where cavitation results in a loss of power.

Cavitation is of great advantage in surgery where certain cells can be destroyed by bubbles and can be used to destroy tissues during surgeries.

Peristaltic pumps used in hospitals have fingers that gently massage fluid through tubes in order to stop cavitation which destroys blood cells.

Cavitation might be used to break up body fat and sculpture the human body.

Conceive

 * Bang objects together, collect data to describe mathematically what happened.
 * video burning paper with steel ball-bearings
 * video Thermite Reaction
 * video jig saw upside down pendulum
 * video Pendulum Waves


 * Create cavitation, collect data and describe mathematically what happened.
 * | Making Biodiesel Using Hydrodynamic Cavitation requires expensive, high pressure motor
 * | This video is about using high frequency sound to induce cavitation requires specialized equipment
 * propeller requires a high speed camera.

Design
Cavitation creates bubbles that can flash light. Simple cavitation occurs when a pressure wave in a liquid causes phase change to a gas state. Watch for the flash at the bottom of the bottle 28th second of this video).

Next Steps

 * Make the tube longer,
 * figure out different method of sealing after drawing vacuum
 * build pulley system to amplify the throw of the AC solenoid.