how is energy created?

Answer 1

Everyone always gets this wrong and it is extremely frustrating.

At school you are taught the following:

"Energy cannot be created or destroyed, only transferred form one form to another".

Then, later, you might learn that:

"Energy and mass are related through E=mc², so mass can be transformed into energy and vice-verca".

I will say something that is going to shock you: THESE TWO STATEMENTS ARE FALSE.

Let's begin with the first statement:

According to Heisenburg's Uncertainty Principal, the initial sum of the energy of a system and the sum of the energy of a system after a finite time are equal, but this finite time depends on the magnitue of the fluctuation of the sum of the energy. The uncertainty principal states that:

ΔE Δt ≥ ħ / 2

In other words, a change in energy can occur as long as it is for a sufficiently short time. That is right, energy can be CREATED from NOTHING as long as it is DESTROYED again after a SHORT TIME.

This is not a fairy tale, this forms the basis for quantum field theory, which offers explainations for phenomena such as Alpha decay and how LASERs work. These things shouldn't occur according to classical physics because they rely on the creation of energy (albiet for a short time such that the change in energy is immeasurable).

That is a FACT.

Now lets deal with the second problem, E = mc². I told you that this statement is false and this is why:

The ACTUAL equation is:

E² = (mc²)² + p²c²

where p is the relativistic momentum (which depends on the velocity of the body). IF the body is at rest, then this DOES reduce to the normal E = m´c² but here, m´ means the REST MASS and is not the same as the INERTIAL or GRAVITATIONAL MASS because both the inertial and gravitational mass do not take motion into account and remain constant. In relativity, as a body accelerates it experiences a change in mass. This is why it is so important to declare m´ as the rest mass. In this way, the E is actually the rest energy and NOT the total energy the system contains.

Importantly, this equation does not explain IN ANY WAY whether energy can be created/destroyed or not. It simply describes the relationship between energy, mass and momentum (or rest mass if the reduced equation is considered).

I hope this helps clear up some misconceptions. Energy can be created and destroyed but within the Heisenburg limits (above) such that, according to the variational principal, in the macroscopic world classical physics still applies.

If you do not believe me, print this out and show your Physics teacher. They should (if they have any Physics education, as some Physics teachers don't have a Physics degree) confirm what I have said. If the Physics teacher doesn't believe me, give them my email address (or email me via here) and I will explain it to them too!

Answer 2

Energy and matter are two aspects of the same phenomena. The sum of energy/matter in the Universe is conserved. You cannot change it. Matter can be converted to energy, though, via nuclear reactions according to E=mc^2.

Matter can be converted from energy too.

Answer 3

hi
energy is create by
1-attractively between tow thing simply between (electron around the nuclear "proton & newtron") from the molicule .or moving magnatide via coil for producting power electric .
2- movement , movement of molicule , (electron a round the molicule)
3- hitting , when tow thing hit together they release energy depend on hit ,
4-absorption , there are some of substant absorp energy to creat energy , example : sun or light cell .
5- reaction when tow substant react together they lose and they give energy , example : battery , chemical reaction .... etc

Answer 4

By conversion from mass

Mass and energy together are neither created nor destroyed

Answer 5

In the conventional sense, it cannot.
In the Einsteinian sense, matter can be converted, an example being nuclear fission. But that means the matter is simply energy and vice versa, and all energy is kept constant in the entire universe, thanks to the First Law of Thermodynamics.
So to answer your question, it is pink.

Answer 6

Energy is not created nor destroyed, just transfered.

Answer 7

Energy is already there you just convert it to a form that suits your purpose.

Answer 8

what sort of energy are u referring to?