REVIEW: Eyes and Microscopes

When focusing a new slide, what objective lens (magnification) should you start with?

• Highest objective lens

• Lowest objective lens

• 100x objective

Which focusing adjustment knob should you use on the LOWEST power setting?

• Coarse Focus Knob

• Fine Focus Knob

• Light Focus Knob

What is the correct way to hold a microscope if you have to move it?

• Holding it with one hand

• You don’t hold it

• Hold the arm AND the base with both hands

If the ocular lens (eyepiece) is 10x magnification and the objective lens is 35x magnification, what is the total magnification?

• 35x

• 10x

• 350x

Who started experimenting with glass?

• The Romans

• The Greeks

• No one

What did they start calling the curved glass that magnified things?

• Lenses

• See-through sand

• Microscopes

What were early magnifiers called?

• Mouse glasses

• Magnetoscopes

• Flea glasses

What were “burning glasses”?

• Glasses that were too hot to touch

• Lenses that could start fires by using energy from the sun

• Lenses that could start fires by using energy from the ground

What did Zaccharias Janssen and his father, Hans discover?

• The compound microscope

• The tripod

• That you can use lenses to see woven threads

Why is Antonie Van Leeuwenhoek the “Father of Microscopy”?

• He made the most microscopes in the world

• He made the best microscope (270x magnification) of his time

• He made the most famous microscope of all time!