00:01
In this problem, a yellow light of web length 589 nanometer is being used to view an object on a microscope.
00:09
The diameter of the objective lens of the microscope is 9mm.
00:14
Now in part a, to find the theta mean, we use the rally criterion.
00:22
So the rally criterion is thetamine using the small angle approximation.
00:29
Is going to be 1 .22 lambda over d, which is 1 .22 times web length was 589 nanometers.
00:41
I'm just going to do multiplication here, 589 times 10 to the negative 9 over the diameter was 9 times 10 to the negative 3.
00:54
And this is going to give us 7 .98 times 10 to the negative 5 radian.
01:05
All right.
01:06
So in part b, from raleigh criterion, we can see that the smallest possible angle of resolution corresponds to the smallest possible web length.
01:19
Right.
01:20
You can just compare over here...