| Size: 586 Comment:  | Size: 725 Comment:  | 
| Deletions are marked like this. | Additions are marked like this. | 
| Line 13: | Line 13: | 
| * 4A30.10 [:BiStrip: Bimetallic Strip] | * 4A30.10 [:BiStrip: Bimetallic Strip] | 
| Line 15: | Line 15: | 
| * 4A30.22 [:BallsPlate: Balls and Plate] | * 4A30.20 [:LBRS: Large Ball and Ring Stand] | 
| Line 17: | Line 17: | 
| * 4A30.20 [:LBRS: Large Ball and Ring Stand] | * 4A30.21 [:BallRing:Ball and Ring] | 
| Line 19: | Line 19: | 
| * 4A30.21 [:BallRing:Ball and Ring] | * 4A30.22 [:BallsPlate: Balls and Plate] | 
| Line 21: | Line 21: | 
| * 4A30.40 [:JumpDisks: Jumping Discs] | * 4A30.40 [:JumpDisks: Jumping Discs] * 4A30.55 [:LongRodSpinStraw: Long Rod with Spinning Straw] * 4A30.58 [:MetalRods: Thermal Expansion of Metal Rods] | 
Thermal Properties of Matter
PIRA classification 4A
4A10. Thermometry
4A20. Liquid Expansion
4A30. Solid Expansion
- 4A30.10 [:BiStrip: Bimetallic Strip] 
- 4A30.20 [:LBRS: Large Ball and Ring Stand]
- 4A30.21 [:BallRing:Ball and Ring] 
- 4A30.22 [:BallsPlate: Balls and Plate] 
- 4A30.40 [:JumpDisks: Jumping Discs] 
- 4A30.55 [:LongRodSpinStraw: Long Rod with Spinning Straw] 
- 4A30.58 [:MetalRods: Thermal Expansion of Metal Rods] 
4A40. Properties of Materials at Low
4A50. Liquid Helium
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