Physical properties, such as the acceleration due to gravity and the gravitational constant, remain the same regardless of location, illustrating symmetric principles in physics.
Symmetry in the context of physics implies that certain properties are invariant or unchanged regardless of location. For example, the gravitational constant and the acceleration due to gravity on Earth are constants that don't vary spatially across the universe or our planet respectively.
This is a crucial part of the principle of relativity, which states that the laws of physics are the same for all observers, regardless of their state of motion or position in space. Even though how we express a location can depend on our frame of reference, like using different address systems or coordinate systems, the underlying physical laws remain consistent.
The concept of an absolute location in geography, such as an address used for delivering packages, is separate from the physical laws that govern the universe. When discussing frames of reference, one can define different points or perspectives, like the example of a boy standing on a train. The perceived motion may change with different references, but the physical results do not differ—illustrating the fundamental symmetry of space.