# Physical constants

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1. Apr 12, 2015

### nishanth R

1. The problem statement, all variables and given/known data
What is the difference between a dimensional physical constant and dimensionless physical constant?

2. Relevant equations

3. The attempt at a solution

2. Apr 12, 2015

### gracy

Please fill all the templates.You will have to show some effort in order to get any help.In physics terms I would say
"The results you achieve is directly proportional to the effort you apply"

3. Apr 13, 2015

### andrevdh

Maybe start out with examples of each type of constant?

4. Apr 13, 2015

### BvU

What is the context of your question ? In introductory physics there are hardly any dimensionless physical constants, apart from ratios.
Are you sure you don't mean coefficients (e.g. for physical properties, friction coefficients and such) ?

If we leave out a whole lot of ratios (mostly dimensionless for obvious reasons),
when I look at a list , all I see are physical constants with a dimension -- apart from a few very fancy ones such as $\alpha$ and g-2 .

5. Apr 14, 2015

### andrevdh

I think they mean something like π or e

6. Apr 14, 2015

### BvU

nR, what DO you mean ? I read physical constants.