# E= mc2

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#### Progress

##### Member
I would like to ask native speakers of English how Ainsteins famaous equation "E = mc2" is pronounced.

#### rewboss

##### Key Member
We usually pronounce it "E equals M C squared".

#### Progress

##### Member
Thank you very much, rewboss :-o

I would also like to know similarly " E = mgh = 1/2mv2" and "y = m3 * t4"

Thank you very much.

#### rewboss

##### Key Member
Well, as you have written the first equation, it's ambiguous. What does it mean?

E = mgh = (1/2)mv²
E = mgh = 1/(2mv²)
...or something else?

I think the other equation is "Y equals M cubed times T to the power of four".

#### Progress

##### Member
Oh sorry, I would like to know the pronouciation of "E = mgh = (1/2)mv²"
Because it is difficult for me

#### rewboss

##### Key Member
I would say: E equals M G H equals one-half times M V squared.

You could also write it like this:

Code:
``````      mv²
E=mgh=---
2``````

and then it would be: E equals M G H equals M V squared over two.

#### Progress

##### Member
Great!!! Thank you very much, rewboss.

I will try an example. Please corret as necessary.

x 7
Y = 3 * t 5 * -----
4

Y eauals three times t to the power of 5 times x to the power of seven over four ?

Thank you very much.

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#### Progress

##### Member
The eauation above hasn't appeared well

I mean " Y = 3 * t5 * x 7 / 4

#### rewboss

##### Key Member
Y eauals three times t to the power of 5 times x to the power of seven over four ?

That would look like this:

Code:
``````     5   7/4
Y=(3t )(x   )``````

If that's the equation you're trying to describe, you got it right.

#### Progress

##### Member
Oh, I meant

Y=(3 * t5)(1/4 * x7 )

#### rewboss

##### Key Member
This is the problem when trying to describe equations: it's nearly impossible, and certainly not normally done without also displaying the actual equations. Why do you need this information?

For your equation, you could try:

Y equals three times T to the power of five, [pause] multiplied by [pause] X to the power of seven, over four.

But when things get this complicated, I say use a projector or a flipchart.

#### Progress

##### Member
Thank you very much, rewboss, for kindly answering me.
I'm Japanese but an English teacher.;-) I have to read aloud in front of my students. Sometimes there are equations in text books. I want to get accoustomed to them. Compared to Japanese, the way to pronouce them is more complicated.

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