What are the variables in the equation λ=xd/L in Physical Optics?

[NP04]

Homework Statement

Monochromatic light falls on a single slit 0.01 cm wide and develops a first-order minimum (dark band) 0.59 cm from the center of the central bright band on a screen that is one meter away. Determine the wavelength of the light.

Relevant Equations

λ=xd/L

I know I have to use λ=xd/L. But I don't know what any of those variables (except lambda) mean. If you assume that 0.59 is x times d, you can get an answer that is close. 0.59/100 = 5.9*10^-3. Can someone explain the solution and meanings of variables using a diagram?
(The answer to the problem is 5.9*10^-5 cm).

 

[phinds]

How can you have a homework problem using variables that mean nothing to you?

 

[NP04]

How can you have a homework problem using variables that mean nothing to you?

There is slit separation, slit width, distance between center maximum. I just don't know which variable corresponds to each.

 

[phinds]

There is slit separation, slit width, distance between center maximum. I just don't know which variable corresponds to each.

That doesn't answer my question, since if you don't know which is which, that's equivalent to not knowing what the variables are

 

[NP04]

That doesn't answer my question, since if you don't know which is which, that's equivalent to not knowing what the variables are

Ok, so I'm asking what they are.

We did a lab on this in class.