- #1

- 1

- 0

## Summary:

- The question is how distances between lines behave after a lens.

Suppose one light up with a laser on a grid with grid constant g. The grating is followed by a focusing lens with a focal length of f. In the focus (or immediately in front of it) the maxima have a distance d. How large was the distance of the maxima immediately after the grating?

scheme:

Laser beam----------grating=======Lens=======focal point(here the maxima have distance d from each other)

Note:

The angle of the k.th maximum is given by

Best wishes and many thanks!

scheme:

Laser beam----------grating=======Lens=======focal point(here the maxima have distance d from each other)

Note:

The angle of the k.th maximum is given by

Best wishes and many thanks!