application of thermal expansion ?
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Application of Thermal Expansion :
- Small gap is left between iron rail of railway track especially during summer
- Space is left between grinder used for support bridges
- Clock pendulum are made up of invar
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Answer:
Hot-air balloons are an obvious example of the practical use of the thermal expansion difference between a gas and a solid. Because the hot air inside the balloon bag increases in size faster than the container it stretches the bag so that it expands and displaces the colder (heavier) air outside the bag.
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