What are the physics definitions for time and energy?
7863
What is time, does it flow, and if so what defines its direction?
133421
what type of energy electrical current have
28062
Something special about energy eigenstates when it comes to time evolution?
53455
Relativistic speed/energy relation. Is this correct?
156280
What's the difference between work in thermodynamics and mechanics?
35939
Is fire matter or energy?
21256
If energy can neither be created nor be destroyed,what is the ultimate source of energy?
146039
Is it always possible to define energy of a system?
119581
How to understand whether potential energy increases or decreases?
114335
Entanglement in time
3535
Is time continuous or discrete?
69709
How can a photon oscillate when it experiences no time?
103000
What is the difference between implicit, explicit, and total time dependence, e.g. $\frac{\partial \rho}{\partial t}$ and $\frac{d \rho} {dt}$?
141546
Time and distance in a photon's frame of reference
115428
Measures: Atom Definitions
118165
How does escape velocity relate to energy and speed?
153686
Is time a Scalar or a Vector?