Hello, I'm new to the forum, but I'd like to ask this here before introducing myself. For now, just know that I'm kind of a layman who doesn't have a lot of background in physics.
Basically it's just the question on the topic. I talked with two people and one said that one object can be relative to itself while the other guy said that, if there is only one object, it is not relative to anything. What is you guys' verdict on this?
I came up with this question because I kept thinking "If there was only one frame of reference, would relativity still apply?" And couldn't come up with an answer by myself.
Also, one of them said that, for some millionths of a seconds after the Big Bang, the laws of physics did not exist. Does that mean that relativity itself was invalid at that time?
I hope you guys can shed some light on me here.![]()