Register to reply

Classical physics vs quantum physics

by jd12345
Tags: classical, physics, quantum
Share this thread:
jd12345
#1
Nov14-12, 02:18 AM
P: 260
Why do we say that classical physics is a lot different from quantum physics?

The laws that determine the macroscopic world should be derivable from quantum laws. So in a way the Newtonian or classical laws are basically quantum laws( maybe a bit approximated)
So why differentiate between macroscopic and microscopic world?
Phys.Org News Partner Physics news on Phys.org
Mapping the optimal route between two quantum states
Spin-based electronics: New material successfully tested
Verifying the future of quantum computing
Simon Bridge
#2
Nov14-12, 02:31 AM
Homework
Sci Advisor
HW Helper
Thanks
Simon Bridge's Avatar
P: 12,472
Why do we say that classical physics is a lot different from quantum physics?
We don't (except by mistake). We say that quantum physics is different from classical physics :)

All dogs may be animals but not all animals are dogs.
All classical physics is a consequence of quantum - but not all quantum physics can be described classically.

Technically - classical physics is what QM does on average ... so the math is different.


Register to reply

Related Discussions
Quantum physics vs classical physics Quantum Physics 2
Quantum Physics from Classical Physics with an epistemic restriction Quantum Physics 7
Classical Physics compared to Quantum Physics? General Discussion 2
Why sub-classical physics and quantum physics Classical Physics 5
Quantum physics vs classical physics Quantum Physics 2