History

Question 1

This person discovered the electron

Answer 1

J.J. Thompson

Question 2

Who was credited for inventing the first electron microscope?

Answer 2

Knoll and Ruska

Question 3

Who was credited with discovering the law of refraction, ‘Snell’s law‘, and
used it to develop lens shapes that focus light with no geometric aberrations?

Answer 3

IbnSahl(c. 940-1000)

Question 4

Zacharias & Hans Jansen were credited for the discovery of what?

Answer 4

First compound microscope

Question 5

Describe 5 ways in which Marcello Malpighi contributed to science through his use of microscopes

Answer 5

• A skin layer (Malpighi layer)
• 2 different Malpighiancorpuscles in the kidneys and the spleen
• Malpighiantubules in the excretory system of insects
• Described lung structure and blood flow, blood clotting on right and left side of heart
• First to see red blood cells, black skin, described the brain as a gland