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  • This is a demonstration used to show the principle of heat of compression.  This is the physical process that makes Diesel engines possible.   To work the demonstration, a small sample of cotton is placed in the chamber.  The plunger is then forced down and held in place with considerable force.  The air in the chamber is forced into a very small volume, thus heating the air above the flash temperature of the Cotton.  The same process take place in a Diesel engine, but the fuel is oil.  The Diesel engine is much more efficient that a gasoline engine.  This image is part of a sequence showing the chamber before and after ignition..
    K12-combustion8014.jpg
  • This is a demonstration used to show the principle of heat of compression.  This is the physical process that makes Diesel engines possible.   To work the demonstration, a small sample of cotton is placed in the chamber.  The plunger is then forced down and held in place with considerable force.  The air in the chamber is forced into a very small volume, thus heating the air above the flash temperature of the Cotton.  The same process take place in a Diesel engine, but the fuel is oil.  The Diesel engine is much more efficient that a gasoline engine. .
    K12-combustion8008.jpg
  • This is a demonstration used to show the principle of heat of compression.  This is the physical process that makes Diesel engines possible.   To work the demonstration, a small sample of cotton is placed in the chamber.  The plunger is then forced down and held in place with considerable force.  The air in the chamber is forced into a very small volume, thus heating the air above the flash temperature of the Cotton.  The same process take place in a Diesel engine, but the fuel is oil.  The Diesel engine is much more efficient that a gasoline engine. .
    K12-combustion7955.jpg
  • This is a demonstration used to show the principle of heat of compression.  This is the physical process that makes Diesel engines possible.   To work the demonstration, a small sample of cotton is placed in the chamber.  The plunger is then forced down and held in place with considerable force.  The air in the chamber is forced into a very small volume, thus heating the air above the flash temperature of the Cotton.  The same process take place in a Diesel engine, but the fuel is oil.  The Diesel engine is much more efficient that a gasoline engine.  This image is part of a sequence showing the chamber before and after ignition..
    K12-combustion8020.jpg
  • A special compression driver speaker is mounted to the left of the glass.  When the speaker is set to the resonance of the glass - vibrations will constructively interfere with each other until the glass breaks.  This demonstration takes a special speaker, a frequency generator, and an amplifier that can drive the speaker at 120 watts.  The action is captured with a high speed flash operating at 1/20,000th of a second. This image is one out of a set of two showing before and during the glass shattering..
    K12HS-glass-break008-cleaned.jpg
  • A tennis ball moving at 95 feet per second, or 28.95 meters per second collides with a cinderblock wall. During the collision, the tennis ball compresses. In this type of Collison momentum is conserved. The tennis ball was launched from an air cannon as is commonly used to practice tennis.
    K18HittingWall6913.jpg
  • A tennis ball moving at 95 feet per second, or 28.95 meters per second collides with a cinderblock wall. During the collision, the tennis ball compresses. In this type of Collison momentum is conserved. The tennis ball was launched from an air cannon as is commonly used to practice tennis.
    K18HittingWall6919.jpg
  • As an individual piece of spaghetti is broken, the spaghetti fractures into several pieces that fly off..The exact  reason that compressive and tension forces cause the spaghetti to break in this is currently under study.   Spaghetti breaks in the same way as smokestacks break when they fall during demolition.  This breaking patter is often called the “smokestack problem”  The motion was captured with a 1/20,000th of a second flash, while the room lights were responsible for the blur in the photograph..
    K11-Spaghetti001.jpg
  • A tennis ball moving at 95 feet per second, or 28.95 meters per second is captured in flight just after a collision with a  cinderblock wall. The tennis ball was launched from an air cannon as is commonly used to practice tennis.
    K18AfterCollision6922.jpg
  • A tennis ball moving at 95 feet per second, or 28.95 meters per second is captured in flight just before it collides with a cinderblock wall. The tennis ball was launched from an air cannon as is commonly used to practice tennis.
    K18BeforeCollision6927.jpg
  • A schlieren image of compressed air.  The schlieren images identifies areas of different temperature by using the change in the index of refraction of a fluid due to a change in temperature.
    K07Schl0143.jpg
  • This is a turbine blade that is responsible for making a jet engine work.  This particular blade is from a fighter jet and routinely travels though the compression stage of the jet engine traveling faster than the speed of sound as it rotates.  Due to the hot environment inside the engine, the turbine blades have to be specially engineered out of state of the art materials.  Titanium, and titanium alloys are routinely used for turbine blades.
    titanium-jet-blade_0060.jpg
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