What does E=MC Squared mean?

Answer 1

Its the formula that shows how much energy is contained in a given amount of mass. The c squared is the speed of light squared, it is a very huge number, so the amount of energy contained in even a small amount of matter is enormous. Albert Einstein developed the expression, it is why nuclear energy works, including the sun.

Answer 2

E=MC^2 here E is energy and m is mass and c is speed of light in vacuum. The significance might be in bombastic language and a middle school student might not be able to grasp it. In simple terms. Take a mass m, destroy it and you get energy E. This is the simplest way of understanding it. Hope you know the structure of the atom, where the nucleus contains both neutron and protons. It is a very small volume but extremely high mass, as the entire mass of atom is present here. Neutrons are neutral particles, and protons are positively charged particles. In such a small volume obviously protons will interact, this will lead to repulsion, cos like charges repel. This would mean that the protons will continuously repel each other and nucleus would disintegrate due to this force of repulsion. However this does not happen. The reason is that an energy called binding energy compensates the repulsive force. This binding energy is provided by a small mass m by the relation E=MC^2. We give a fancy name to this mass called mass defect.

Answer 3

E=Mc^2 is the Equivalence of Energy and Matter.

It is an equation that came from special relativity. It is not the theory of relativity, but merely an aspect of it.

"It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing -- a somewhat unfamiliar conception for the average mind. Furthermore, the equation E is equal to m c-squared, in which energy is put equal to mass, multiplied by the square of the velocity of light, showed that very small amounts of mass may be converted into a very large amount of energy and vice versa. The mass and energy were in fact equivalent, according to the formula mentioned above. This was demonstrated by Cockcroft and Walton in 1932, experimentally." -- Albert Einstein

Answer 4

Energy= MC Hammer

Answer 5

Unless you have lived in a cave your entire life, the above formula must be very familiar to you. It was formulated in the Special Theory of Relativity by the German-born American physicist Albert Einstein (1879-1955).

E=mc² has to be the most famous equation of all time. Authors David Bodanis, Pete Moore (and no doubt many more) have each written entire books concerning just this one equation.
It is the name of an Internet website.
It was shown at the beginning of Twilight Zone television episodes ("A dimension of mind" - remember ?) and at the beginning of "Twilight Zone: The Movie" (1983).
E=mc² was the name of a 1996 film.
Many corporations (computers, graphics, management, etc) use this equation as part of their name.

You may have wondered what this mysterious equation is all about. It seems that knowing how to use this equation conveys intelligence.

Answer 6

E = mc^2

(Created prior to 1993)

What does e=mc^2 mean?
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By itself, this equation tells us that, when a quantity "m" of
matter is converted to energy, the amount produced is equal to m*c^2, where c
is the speed of light. One way this equation can be obtained: when Einstein
developed the special theory of relativity, he found it predicted that mass
increases with speed. When this is applied to a calculation for the kinetic
energy KE of a moving object traveling with speed v, one obtains the result KE
= (m - m0)*c^2 where m is the (increased) mass of the object when its speed is
v, and m0 is the mass of the object when it is at rest. Thus, an increase in
kinetic energy is accompanied by an increase in mass. Furthermore, this
suggests that, even when the object is not moving, there is a "rest-mass"
energy m0*c^2 associated with it.Then the total energy (kinetic + rest-mass
energy) is given by E=mc^2 . It was Einstein's great insight to assert that
matter and energy in general are, in essence, equivalent and interchangeable.
There was other evidence for such an assertion at that time. An experiment
done in 1890 confirmed that radiation exerts a pressure when it hits and is
absorbed by an object. Interpreted in the context of relativity, one is led
to the conclusion that when an object absorbs electromagnetic radiation of
energy E, its mass is increased by E/c^2. Thus, it seems reasonable to assign
an equivalent mass to radiation. Since then, the correctness of the E=mc^2
equation, as well as the mass- energy equivalence that underlies it, has been
widely confirmed by experiment.

R.C. Winther
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Answer 7

Generally called the mass -energy equivalence, this equation means that if a system has mass M, its energy is Mc^2; Equivalently, if it has energy E, its mass will be E/c^2.

You cannot have energy without mass or mass without energy.

A photon has zero rest-mass. It also has zero energy at rest; Photons (particles of light) exist only at the speed of light. They do not exist at rest.

Answer 8

It means for a given weight (mass) an object contains an equivalent ammount of energy, if you could convert the whole object to pure energy, then thats the amount you would have.

so. ..E (joules or kg·m²/s²) = m (kilograms) multiplied by (299,792,458 m/s)2.

Which pretty much means that an object weighing 1KG would turn into..

* 90 000 000 000 000 000 joules or
* 25 000 000 000 kilowatt-hours or
* The energy in 21 megatons of TNT
* approximately 0.0850 Quads (quadrillion British thermal units)

a lot eh!

just think how much you weigh in KG, and times that by 21 and thats how many megatons of TNT its equivalent to, you could blow up the planet!

Answer 9

Energy equals mass times the speed of light, sqaured.

It's Albert Einstien's Theory of Relativity.

Answer 10

ACCORDING TO EINSTEIN WHEN MASS IS COMPLETELY CONVERTED INTO ENERGY

E = MC SQUARE (WHERE C IS THE VELOCITY OF LIGHT)