Complex sentence: Leonard Leakey Hofstadter (Johnny Galecki) is an experimental physicist with an IQ of 173 who is originally from New Jersey and received his PhD at age 24, spending at least some of his time at Princeton University.
Split into simpler sentences: Leonard Leakey Hofstadter (Johnny Galecki) is an experimental physicist with an IQ of 173. Originally from New Jersey, he received his PhD at age 24, spending at least some of his time at Princeton University.