[Laser] Chucks question continued

[Chuck Hast]

Jim,
When I plugged in your number I got 532 (it was a rather long decimal but
for
effects of calculation it gave 532 nm)

I am using a grating slide, the laser sends a beam through the slide the
grating
generates the two side beams at the two maxima either side of maxima 0.

Yes there are reflective ones, but I am using the transmissive slide as
shown
in the following instruction:

http://laserclassroom.com/products/measure-wavelength-laser-light/

I did this sort of thing back about 4 years ago, I got a good formula and
was able to obtain very good results. I had it in a spread sheet, I thought
I had saved it on a disk but appears it did not get saved.

I know this all works just have to sort it out.

On Mon, May 14, 2018 at 7:40 PM, Jim Moss <n9jim-6 at pacbell.net> wrote:

> Chuck,
>
> After rereading, I think my statement on d is not correct. It may be as
> simple as 1 mm/1000. See link below to Newport.
>
> Could the error be related to that you are not reflecting directly off the
> grating surface? The experiment shows sending the beam thru the grating? If
> so, could there be an angle error induced?
>
>  Could it be that the grating is facing the wrong way? Thus creating an
> offset due to the medium thickness of the grating material?
>
> Good summary on defraction gratings.
> https://www.newport.com/t/grating-physics
>
> Jim
>
>
> Sent from my iPad
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-- 

Chuck Hast  -- KP4DJT --
I can do all things through Christ which strengtheneth me.
Ph 4:13 KJV
Todo lo puedo en Cristo que me fortalece.
Fil 4:13 RVR1960