Quiz Question

What is equal to A. The angular magnification of a

microscopeB. The lateral magnification of a

microscopeC. The angular magnification of a

telescopeD. The lateral magnification of a

telescopeE. The angular magnification of a

magnifying glass

Angular Magnification

Magnifying Glass

The Microscope

Is the magnification we use for a microscope the lateral magnification or the angular magnification?

A. LateralB. AngularC. Both D. NeitherE. I have no idea, I am so confused…

No summer in Paris for you . . .

L. TOM PERRY – Our strengthened family cultures will be a protection for our children from "the fiery darts of the adversary" (1 Nephi 15:24) embedded in their peer culture, the entertainment and celebrity cultures, the credit and entitlement cultures, and the Internet and media cultures to which they are constantly exposed. Strong family cultures will help our children live in the world and not become "of the world" (John 15:19).

The Telescope

θ0

θ0

The Telescope

The Telescope

θ0 θ

Discussion question: For a telescope we get a

A. Real image B. Virtual image

So how do we get images from telescopes to post on the Astronomy Picture of the Day?

The lateral magnification for a telescope is

A. Negative with a magnitude greater than 1

B. Negative with a magnitude less than 1

C. Positive with a magnitude greater than 1

D. Positive with a magnitude less than 1

The Telescope

θ0 θ

The Telescope

θ0 θ

θ0 θ

The Telescope

When can a diverging lens make a real image?

Assuming the two lenses are made of the same material, which will have a larger f?

A B C – they are the same

If the lens had a lower index of refraction, the image be

A.Larger, further awayB.Smaller, further awayC.Larger, closerD.Smaller, closerE. No change

If I put a glass lens (n=1.5) in water (n=1.333), what happens to the focal

length of the lens?

A. It gets bigger.B. It gets smaller.C. It stays the same.D. It depends.E. I can’t simply characterize the lens

with a single focal length anymore.