<p>which is the best physics field? is it engineering physics, pure physics, applied physics, mathematical physics, quantum physics, mechanic physics? whats the difference between all these physics? which is the HARDEST??</p>
<p>which is the best physics field? is it engineering physics, pure physics, applied physics, mathematical physics, quantum physics, mechanic physics? whats the difference between all these physics? which is the HARDEST??</p>