ROTATIONAL ENERGY Mug

During the second world war - my grandfather - a dispatch rider under Montgomery - 'The Spartan General' in East Africa ~ almost lost his life at sea after having to survive for four days in the mediterranean on saltwater biscuits and nothing else... My grandmother said besides training for military he was also a boxer and used to get rid of pent up frustrations at home with his speedball... I was very young but it was the first time I learnt about what I tend to refer to as 'rotational energy'. Kinetic energy and conservation of movement ~ through circular motion... I never knew my grandfather - he passed away due to heart attack before I was born... but I often think about him and my mother mentions - that I am very much li...