LESSON 2 (History of Microscope)

Question 1

They produced the first compound microscope in the 1590s. They were Dutch eyeglass makers. They began experimenting with ways to use different lenses. When they put a lens at the end of a small tube, they discovered that the objects near the end were magnified more than the lens by itself could achieve.

Answer 1

HANS AND ZACHARIAS JANSSEN

Question 2

He inventing one of the first compound microscope in the year 1625. It is called compound microscope because it has more than one lens. He added a focusing device to his microscope and of course went on to explore the heavens with his telescopes

Answer 2

GALILEO GALILEI

Question 3

In 1665 _________ ____________ had access to many microscopes available in Royal Society of London. He examined everything he could get his hands on. When he examined a very thin slice of cork, he thought the close- up views resembled small, empty rooms. It
reminded him of small rooms found in monastery; thus he named these rooms’ cells.This gives way to the discovery of cell

Answer 3

ROBERT HOOKE

Question 4

In 1674,_____ ___ ___________ Dutch scientist, worked to create stronger lenses that result to more powerful microscope. He was one of the first scientists able to observe bacteria movement in a single drop of pond water.

Answer 4

ANTON VAN LEEUNHOEK

Question 5

The prototype for the compound microscope was credited to ______ _______ ______ in 1830, which reduces spherical aberration or the “chromatic effect” by showing that several weak lenses used together at certain distances gave good magnification without blurring the image.

Answer 5

JOSEPH JACKSON LISTER

Question 6

_____ ____ research director of the Zeiss Optical Works, wrote a mathematical formula called the “Abbe Sine Condition”. His formula provided calculations that allowed for the maximum resolution in microscopes possible in 1872.

Answer 6

ERNST ABBE

Question 7

In 1903, _______ __________ eveloped the ultra- microscope that could study
objects below the wavelength of light and he won the Nobel Prize for Chemistry in 1925.

Answer 7

RICHARD ZSIGMONDY

Question 8

He invented the phase- contrast microscope in 1932 that allowed for the
study of colorless and transparent biological materials for which he won the Nobel Prize in Physics in 1953.

Answer 8

FRITS ZERNIKE

Question 9

In 19th century, companies in Germany like Zeiss and an American company
founded by ______ ______ began producing fine optical microscope.

Answer 9

CHARLES SPENCER