4B60.15 - Mechanical Equivalent of Heat - Hammer a Block

Code Number:
Demo Title:
Mechanical Equivalent of Heat - Hammer a Block
Mechanical Energy Converted to Heat
Area of Study:
Heat & Fluids
Infrared Camera, Wooden Block, Large Hammer.

Place the wooden block on the table with the IR camera pointing down onto it.  Hit the block with a large hammer.  Note the area of increased temperature where the hammer struck the block.

Place your hand on the table in the area under the camera for a few seconds and then remove your hand.  The camera will be able to clearly see where your hand was for several minutes afterward.

  • George M. Hopkins, "Heat Due to Friction", Experimental Science, p. 194.
  • Borislaw Bilash II, David Maiullo, "Mechanical Equivalent of Heat", A Demo a Day: A Year of Physics Demonstrations, p. 226.

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