# Tag Info

### Relation between energy and time

I understand the question as the OP asking of an intuitive way to think about the relation between energy and time. Therefore the point I would like to make is that energy isn't really a thing. So for ...
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### Relation between energy and time

The way I like to look at it (and which may or may not give you the same amount of intuition as it does to me) is as such: Momentum is what gives rise to changes in position. Clasically, a body ...

### Relation between energy and time

Why is energy always related to time in physics. I don't think it is helpful to describe energy as "always related to time" in physics. That being said, there certainly are a number of ...
• 21.9k
1 vote

### Validity of $\mbox{d}H/\mbox{d}t=\partial H/\partial t$ for dissipative systems

I'll split my answer in some paragraphs: 1. Newton's mechanics in strong and weak forms; 2. Lagrangian mechanics; 3. Hamiltonian mechanics. 1.a Newton's mechanics: strong form. Newton's second ...
• 10.7k
Accepted

### Relation between energy and time

There are at least three occasions where the notions of Energy and Time show up together in classical and modern physics. Probably the most elementary situation is related to the fact that the ...
• 73.8k

### Validity of $\mbox{d}H/\mbox{d}t=\partial H/\partial t$ for dissipative systems

In principle you can use Hamiltonian mechanics also for dissipative systems, or fon systems which cannot be completely described by a Lagrangian. When a Lagrangian is provided, the Legendre ...
• 73.8k
Accepted

### Is it possible to understand in simple terms what a Symplectic Structure is?

At the most rough level possible, a symplectic structure (geometrically) is an even-dimensional manifold together with a preferred choice of two-dimensional planes which, taken together, span the ...
• 1,014
Accepted

• 13.1k