Q1:
How many bright fringes can you clearly see?
- Three
Q2: Manipulate
the card so as to open and close the slit; what happens to the
number of bright fringes as the slit is opened?
- As the slit is opened the number of bright fringes increases.
Q3: Does
this agree with the theory for the single slit? State the formula
and explain.
The formula is sin x=2/D. It agrees because as D increases
it allows more light through therefor allowing a greater diffraction
maximum.
Q4: How
many bright fringes can you clearly see for the CD and the record?
One fringe can be clearly seen on each.
Q5:
How many orders of spectra can you clearly see for the CD and
the record?
On the CD there are ~four and on the record there is only one.
Q6:
Does this agree with the theory for the diffraction grating? State
the formula and explain.
The formula is sin x=m2/d and therefore it agrees because the
diffraction angles are greater for the record so there isn't a
spectra on the record. The CD has low, or no angle of diffraction
so the orders of spectra are clearer.
Q7:
How many bright fringes can you clearly see through the bulb.
- One
Q8:
How
many orders of spectra can you clearly see for the bulb?
~four
Q9:
Does
this agree with the theory for the diffraction grating? State
the formula and explain.
sin x = m1/d. This agrees because the type of light and angle
of the film are consistent with the theory.