Rutherford overturned Thomson's model in 1911 with his well-known gold foil experiment in which he demonstrated that the atom has a tiny, heavy nucleus. Rutherford designed an experiment to use the alpha particles emitted by a radioactive element as probes to the unseen world of atomic structure.he Rutherford paper suggested that the central charge of an atom might be proportional to its atomic mass in hydrogen mass units u (roughly 1/2 of it, in Rutherford's model).
A transformation is a dramatic change in form or appearance. An important event like getting your driverâs license, going to college, or getting married can cause a transformation in your life. A transformation is an extreme, radical change. A simple haircut won't cause a transformation in your appearance, but if you dyed your hair purple and got a tattoo across your forehead, that would be another story.
A rotation is a transformation that is performed by spinning the object around a fixed point known as the center of rotation. You can rotate the object at any degree measure, but 90Â° and 180Â° are two of the most common.