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Science 10 Unit C Biology Section 1 > 1.1 - Scientific Technology > Flashcards

Flashcards in 1.1 - Scientific Technology Deck (15)
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1

- "The Father of Biology"
- one of the first GREEK philosophers who used the scientific method

Aristotle

2

Invented the first compound microscope by combining two convex lenses within a tube

Hans and Zacharias Janssen

3

A ______ microscope uses more than one lens to magnify

Compound

4

______ discovered the cellular composition of cork and introduce the word ______* to science. His three-lens system has TWO lenses in the ocular part.

*inspired by the rooms of monks in a monastery

Robert Hooke
Cell

5

______ was the first person to observe the movement of ______

He improved magnification of microscopes by ______ lenses

Anton van Leeuwenhoek
Living cells
Adding/using

6

Magnification formula

Magnification = (objective lens) (eyepiece magnification)

7

Micrometres / microns (μm) are ______ of a millimetre (mm)

So, 1 mm is ______ μm

1/1000
1000

8

The ______ is the entire area that you see when you look through a microscope. To compare we usually measure their ______.

Field of view (FOV)
Diameters

9

Since the FOV ______ in size in direct proportion to the ______ of the magnification, we can calculate the size of other fields of view.

Decreases
Increase

10

Formula to find unknown magnification or FOV diameter

High power field diameter / low power field diameter= low power magnification / high power magnification

11

Formula to find the actual size of an object in reality

Field diameter / # of objects estimated to fit across the field of view's diameter

12

Scale formula for actual size:diagram size

Scale = Diagram size of objects / actual size

13

Magnification of low power objective lens with ocular lens power of 10X

Low power objective lens = 4X
Magnification = 40X

14

Magnification of medium power objective lens with ocular lens power of 10X

Medium power objective lens = 10X
Magnification = 100X

15

Magnification of high power objective lens with ocular lens power of 10X

High power objective lens = 40X
Magnification = 400X