Microscopes

Question 1

explain Newton’s Lens Equation: xx’=f1f2

Answer 1

x is the newtonian object distance (distance from f1 to object)
x’ is newtonian image distance (distance form f2 to object)

Question 2

explain how the image distance values for newton’s lens equation and the vergence equation can be different, yet refer to the same point in space?

Answer 2

because in vergence equation, image distance is measured from lens; but in newton’s lens equation, image distance is measured from f2

Question 3

what are the two lenses in a compound microscope, and why are they thus called?

Answer 3

objective, because its closest to the object

ocular/eyepiece, because its closest to the eye

Question 4

what two factors contribute to a large angular magnification in a compound microscope?

Answer 4

the lateral magnification of the objective

the angular magnification of the eyepiece/ocular (including when acting as a collimating magnifier)

Question 5

what is the optical tube length?

Answer 5

the distance between f2 of the ocular and f1 of the objective