What is Energy? Seeking Clarity on a Confusing Topic

AI Thread Summary
Energy is defined as a conserved quantity that arises from the invariance of physical laws over time. The discussion highlights confusion around the concept, particularly regarding mass-energy equivalence in special relativity, where mass can be converted into energy. This leads to the conclusion that everything can be viewed as a form of energy, although this perspective can create further conceptual challenges. The thread emphasizes the need for clarity on the nature of energy and encourages exploration of related discussions for deeper understanding. Overall, the topic remains complex and often misunderstood.
sanjib ghosh
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I have seen some definition like,
It is a quantity that is coming from the time translational invariance. or a quantity that should be conserved in some process.
But I am not able to understand what exactly energy is?
In STR mass even can convert into energy, that also make me so confused. So everything can be converted into energy.
I conclude that everything is actually nothing but energy.
But I find still there are lot of problem of thinking in that way.

Please help!
 
Physics news on Phys.org
https://www.physicsforums.com/blog.php?b=3203

Zz.
 
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^ Ah, that's a useful page. Bookmarked!
 

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