Re: Reminds me
Best example of thermal expansion was a manufacturing plant with a 150-foot-long machine. One end was attached to a wall, the other was attached to an I-beam sitting perpendicular to two floor-mounted I-beams. When at operating temperature, the machine was about 120 °C. Some servicing was done in the winter, at likely 5 °C.
The lower I-beams had rather impressive scrape marks from the upper beam's movement.