Ball and Ring, 4A30.21

Location:

• Cabinet: Thermodynamics Cabinet

• Bay: (A3)

• Shelf: #1

(attachment photo showing the fully set up demonstration)

Description:

Two set of a brass ring and a brass ball.

Setup:

A : Extended ball

1. First demonstrate to student that the ball is smaller than the ring. So, it can get through the ring.
2. Install the burner.
3. Heat the ball until it expands. Demonstrate to student, this time the ball is larger than the ring. So, it cannot get through the ring.

B : shrink ring

1. First demonstrate to student that the ring is larger than the ball. So, the ball can get through the ring.
2. Open the liquid nitrogen holder.
3. Put the ring in the liquid nitrogen until you are sure that it shrinks. Demonstrate to student, this time the ring is smaller than the ball. So, it cannot get through the ring.

Cautions, Warnings, or Safety Concerns:

1. Wear the safety glove and glasses.
2. Beware of the heated ball and the cooled ring.

Demonstration:

Insert description of demonstration, how is the demonstration preformed.

References:

1. List any references

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