Laws in Physics
What are laws of nature? During much of the eighteenth and nineteenth centuries Newton’s laws of motion were taken to be the paradigm of scientific laws thought to constitute universal and necessary eternal truths. But since the turn of the twentieth century we know that Newton’s laws are not universally valid. Does this mean that their status as laws of physics has changed? Have we discovered that the principles, which were once thought to be laws of nature, are not in fact laws?