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The Three Laws of Energy

by Gordon Ettie

“Energy is not lost or destroyed, it is merely transferred from one party to the next.” – Sir Isaac Newton


In a discussion of energy the basic understanding revolves around the fact that there are three laws.  These are simple laws dealing with energy and can be defined as follows:

First Law

Energy can neither be created nor destroyed.  This means that you can’t make energy out of nothing— the total amount of energy in the universe is a constant. (Please note that this applies to a closed system – the Earth is not a closed system, the Earth receives energy all the time from the Sun).

Second Law

The second law refers to the state of energy and is reflected in a measurement of the degree of disorder, (a measurement called entropy).  When you burn a lump of coal, (a material in a very ordered state) a change occurs which results in a more disordered state and you can never combine the resultant products, (heat, gases, etc.) back to form that original lump of coal, (First Law).  The Universe, according to scientific evidence, is winding down, the sun will eventually go out, (in billion of years so we don’t have to worry right now).  In summary when we use an energy source it is not destroyed but enters a more disordered state.  This makes the energy less available to us and in converting the energy to power means some loss.

Third Law

As we mentioned the universe is winding down.  The third law is that everything does come to a stop only when the temperature is at −273.15°C on the Celsius scale. This equates to −459.67°F.  This is called absolute zero and is where the entropy measurement is 0, (Zero).

Together, these laws help form the foundations of modern science. These laws are absolute physical laws – everything in the observable universe is subject to them. Like time or gravity, nothing in the universe is exempt from these laws.


3 thoughts on “The Three Laws of Energy

  1. Then my understanding is that it takes energy to make energy. We as humans are energy. Our first source, human energy, came from our mother. But it took two sources of energy to make another one human energy. So… so on, and so forth. Would that make us infinite or beyond infinite energy? If so, would that mean that we are the energy of our Earth, Sun, and Universe. So, then that might or does explain how we are all connected through energy. So, we can heal each other, feel each other in thought or feelings, and see or talk through energy. So, it is like a big spiderweb. Just like the elders said from my tribe, and all indigenous peoples say. Thank you for explaining the laws of energy. Not making jokes, But I now have put two and two together. It makes so much more since to me now.

  2. I’ve had 5 of my daughters pets die in my arms. They are there in one minute and gone in the l next where does the energy of those beloved pets go, alive one minute gone the next

  3. Death is so strange! You hold a life in your arms one minute and the next it’s just gone! Where does it go and does it know it’s changed?

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