Re: what use of classical mechanics
From: Joseph.D.Warner (jwarner_at_grc.nasa.gov)
Date: 10/28/04
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Date: Thu, 28 Oct 2004 18:28:59 +0000 (UTC)
SunnyJing wrote:
> I am studying the course-a complete scheme of mechanics in 18th, 19th
> century, but I find it is just always denoted as "a passage to
> understand quantum mechanics", so it seems no practical use except
> leading to quantum mechanics.
> if so, why do people need to labor on it?
Classical mechanics can stand on its own. It provides a great basis for
Quantum Mechanics. The techniques you learn in CM can be applied to QM.
Also, there is always the reference of the term in QM to CM to help one
initially grasp the meaning of the equation and where it come from.
Away from that CM is the bases for many fields of engineering. When you
do graduate you very well may get a job as a Physicist doing QM related
research but you may not. CM will be the way you will interact with
other people, you will use it to design your experiments along with QM
because you will need to do some engineering yourself if you build new
research equipment.
Then there are whole field of physics related to CM. Classical many-body
theory (ex. why are there rings around planets?), chaos theory, orbital
mechanics for space applications, micro-machining and fluid dynamics to
name a few.
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