TDL
yes, but the law also states that "enery cannot be created or destroyed, only changed from one form into another. But then how does energy exist if it cannot be created.
What this means is that the
total energy content of the universe does not change.When we make measurements of the state of a phenomena as it undergoes change and take into account
all the changes there is a numerical quantity that remains the same which we call energy.Now just what energy is no one knows but this numerical quantity that we measure remains constant and therefore conserved.
The existence of energy is not in question since we can measure it but the forces of nature {electromagnetism,strong force,weak force.and gravity} are the
forms by which energy manifests itself in all these different ways that we observed.{heat energy,chemical energy, potential energy,nuclear energy, radioactive decay energy,fusion energy etc.}
Does this help clarify things?
What delightful hosts they are-Love and Laughter!
Lingeringly I turn away at this late hour,yet glad
They have not withheld from me their high hospitality.
So at the door I pause to press their hands once more
And say,"So fine a time!Thank you both...and goodbye.