- #1
TheAkuma
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Hello people, its been a while since i used physics forums. My assignment is basically a comparison between classical physics and the Quantum physics and to explain why we don't use classical physics. While surfing on the web, i came across a text implying that the definitions of light, energy and matter for classical physics are outdated. When i searched for why they were outdated, I either found nothing or something that made no sense to me. For example;
Energy- what i don't get about the classical definition of energy is that it states "In classical physics energy is considered a scalar quantity, the canonical conjugate to time." I get that it is considered to be a scalar quantity, but what the heck is a canonical conjugate? I searched everywhere and can't find the definition. I know that it shares a special relationship to time, but don't know what sort of relationship that is. Any help would be very much appreciated. (also, if anyone can give me more info as to why Quantum physics is better than Classical Physics that would be much appreciated also)
Energy- what i don't get about the classical definition of energy is that it states "In classical physics energy is considered a scalar quantity, the canonical conjugate to time." I get that it is considered to be a scalar quantity, but what the heck is a canonical conjugate? I searched everywhere and can't find the definition. I know that it shares a special relationship to time, but don't know what sort of relationship that is. Any help would be very much appreciated. (also, if anyone can give me more info as to why Quantum physics is better than Classical Physics that would be much appreciated also)