Comments

State all possible sources of error and their nature. Clearly state which measurements had what sort of errors and explain their origin. Also explain how these errors propagated into your calculations if they did.

Explain how the pattern on the screen changes as the number of lines on the ruler (reflection grating) increases. Support your observations theoretically.

III. Conclusions

In your conclusions state what physical phenomena has been observed. Comment on the dependence of on and how it matches with theoretical expectations (if it does). State your primary numerical results and comment how they match your theoretical expectations. Give a general summary of all your findings and observations in a final sentence.