21. The subatomic particles are not shrinking as they can't since they are in fact true point particles . 22. In nuclear physics it is conventional to consider the impinging particles as point particles having negligible diameter. 23. Electrons are'point particles '- they have no size. 24. :The key difference between a rope and a point particle is that a point particle is rigid. 25. :The key difference between a rope and a point particle is that a point particle is rigid. 26. It's been known since the 19th century that the classical theory of charged point particles contains inconsistent solutions. 27. Like electrons, quarks were thought to be " point particles , " without external dimensions and without internal structures. 28. :Prehistory : What are point particles ? 29. The position "'r "'is measured along the suspension point to the bob, here treated as a point particle . 30. This particle spin generates a magnetic field ( as all spinning charges, point particle or macroscopic ) should.
