‘An AC induction coil was built around one of Tramway's roof pillars, as an electrical current is passed, the pillar expands in both width & length as its temperature rises to 70°C.’
[LESS]‘An AC induction coil was built around one of Tramway's roof pillars, as an electrical current is passed, the pillar expands in both width & length as its temperature rises to 70°C.’