# What is delta Δ ?

1. Feb 12, 2012

### -Physician

What is delta $Δ$, where and why do we use it ?

2. Feb 12, 2012

### DaveC426913

3. Feb 12, 2012

### -Physician

I haven't actually searched, I thought I would get a better answer here, it's not homework, it's my own question.

4. Feb 12, 2012

### DaveC426913

As you wish.

http://bit.ly/zcwU64

5. Feb 12, 2012

### -Physician

Hm, I see it is change , thanks, so like $v$ is velocity but $Δv=v_f-v_0$, but what would be $Δp$ (delta momentum), $p_1-p_0$?

6. Feb 12, 2012

### Staff: Mentor

Yes.

7. Feb 13, 2012

### Curl

it's a greek letter and you can use it for whatever you want.