First: Purpose

The purpose of this lab experiment is to measure the linear

expansion coefficients of up to three different metals by

observing how these materials expand and contract with changes

in temperature. In addition, we will incorporate simple

mathematical modeling techniques to fit curves to empirical data.

Second: Tools

1- Flame operated by gas

2- Heat glass

3- Many metal pips made from copper, aluminum and steel

4- Steam pipes

5- Graded ruler

6- Fixation bearing

7- A thermometer for measuring temperature

Third: Procedures

1- Fill the glass with quantity of water and fixed it properly

above the source of flame.

2- Open the gas cylinder and safe cock at the lab.

3- Operate flame.

4- Put glass cub at the end of the metal to collect condensing

steam.

Fourth: Results and Conclusion

1- Water evaporates and passes in a hose to the pipe

where expansion coefficient shall be measured

2- The indicator moves for some millimeters due to heat

effect on the metal

3- The highest expansion occur when the glass is about to

be empty of the water

Fifth: results table

Metal L0 L1 ∆L = L1- L0

Aluminum 400 402 402-400= 2mm

Copper 400 404 404 – 400 = 4 mm

Steel 400 401 401 – 400 = 1 mm

3.53.002.52.001.51.00.5

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