during the 1980s, action figures got their own films, such as masters of the universe (the secret of the sword) and transformers (the transformers: the movie), as did dolls, such as pound puppies (pound puppies and the legend of big paw) and my little pony (my little pony: the movie). however, these various activities brought him very little money. the low energy of the electron beam means that permanent magnets can be used as lenses and thus a miniature column that does not require cooling can be used. 