Introduction to the Microscope

Slides:



Advertisements
Similar presentations
Microscopy Light and Electron Microscopy. The History Many people experimented with making microscopes Many people experimented with making microscopes.
Advertisements

 Parts  Focusing  Care Images Produced by Light Microscopes AmoebaStreptococcus bacteriaAnthrax bacteria Human cheek cells Plant cells Yeast cells.
Parts of the Microscope and Their Function
MICROSCOPES Unit 1 – Intro to Science Types of Microscopes.
Microscopy Light and Electron Microscopy. The First Light Microscopes Around 1590 Zaccharias and Hans Janssen experimented with lenses in a tube, leading.
Introduction to the Microscope
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the Microscope  History  Care  Parts  Focusing.
Microscopy Light and Electron Microscopy. The First Light Microscopes Around 1590 Zaccharias and Hans Janssen experimented with lenses in a tube, leading.
Introduction to the Microscope
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the compound Microscope. Types of Microscopes Compound Microscope Stereoscope or dissecting scope Onion cells (100x) Cheek cells (400x)
Scientific Tools Microscope Birth of the Microscope 1590 –Zaccharias Janssen and his son Hans experimented with several lenses in a tube and discovered.
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the Microscope  Care  Parts  Focusing.
Brainteaser The more of them you take, the more you leave behind. What are they? Answer Here!
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the Microscope  Care  Parts  Focusing.
Unit #4 Introduction to the Microscope  Care  Parts  Focusing Interactive.
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the Microscope  Care  Parts  Focusing.
Plant and animal cell structure  3 types of microscopes  Light  Electron  Scanning/tunnelling.
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the Microscope  History  Types  Care  Parts  Focusing.
Introduction to the Microscope  Care  Parts  Focusing.
Introduction to the Microscope www. biologycorner
Introduction to the Microscope  Parts  Care  Focusing.
Parts of the Microscope and Their Function
Parts of the Microscope and Their Function
Microscopy OBJECTIVE: STRUCTURE, FUNCTION AND
Compound Microscope Parts and Functions
Introduction to the Microscope
Introduction to the Microscope
Introduction to the Microscope
The Microscope.
Microscopes in Depth Fall 2017
Parts of the Microscope and Their Function
Light and Electron Microscopy
Light and Electron Microscopy
Microscopy OBJECTIVE: STRUCTURE, FUNCTION AND
Microscopes.
Which piece of equipment can BEST measure the volume of ink in a pen?
Introduction to the Microscope
Introduction to the Microscope
Introduction to the Microscope
Parts of the Microscope and Their Function
Microscope Basics T. Trimpe
Introduction to the Microscope
Introduction to the Light Microscope
Parts of the Microscope and Their Function
Microscopes. Microscopes Anton Van Leeuwenhoek found that by placing glass lenses (lenses refract light) at certain distances from each other, he could.
Introduction to the Microscope
Introduction to the Microscope
Introduction to the Microscope
Super Cells!.
Introduction to the Microscope
Microscopy.
Microscope Notes.
Parts of the Microscope and Their Function
Introduction to the Microscope
Introduction to the Microscope
Microscopes.
Parts of the Microscope and Their Function
Parts of the Microscope and Their Function
Class Opener… What are the four types of organic molecules?
Introduction to the Microscope
Introduction to the Microscope
Presentation transcript:

Introduction to the Microscope

The First Light Microscopes Around 1590 Zaccharias and Hans Janssen experimented with lenses in a tube, leading to the forerunner of the microscope and the telescope In the late 1600’s, Anton van Leeuwenhoek was the first to see bacteria, yeast, and many other microbes using a microscope

How Light Microscopes Work First, the objective lens gathers light from the specimen and magnifies the image Most microscopes have several objective lenses that can be rotated into position to provide different levels of magnification (4X, 10X, 40X) The ocular lens in the eyepiece magnifies and transmits the image to your eye The magnification of the ocular lens is 10X To find the total magnification of the microscope you are using, multiply the magnification of the objective lens by the magnification of the ocular lens. EX. 40X (objective lens) x 10X (ocular lens) = 400X magnification

Images Produced by Light Microscopes Amoeba Streptococcus bacteria Anthrax bacteria Plant cells Human cheek cells Yeast cells

Beyond Light Microscopes Light microscopes are limited by their resolution. Light microscopes cannot produce clear images of objects smaller than 0.2 micrometers The electron microscope was invented in the 1930’s by Max Knott and Ernst Ruska Electron microscopes use beams of electrons, rather than light, to produce images Electron microscopes can view objects as small as the diameter of an atom

Types of Electron Microscopes Transmission electron microscopes (TEMs) pass a beam of electrons through a thin specimen Scanning electron microscopes (SEMs) scan a beam of electrons over the surface of a specimen Specimens from electron microscopy must be preserved and dehydrated, so living cells cannot be viewed

Images Produced by Electron Microscopes Cyanobacteria (TEM) Lactobacillus (SEM) Campylobacter (SEM) Deinococcus (SEM) Avian influenza virus House ant Yeast Human eyelash

Microscope Care Always carry with 2 hands Only use lens paper for cleaning Do not force knobs Always store covered Keep objects clear of desk and cords

Microscope Parts Eyepiece Body Tube Revolving Nosepiece Arm Objective Lens Stage Stage Clips Coarse Focus Diaphragm Fine Focus Light Base

Using the Microscope Place the Slide on the Microscope Use Stage Clips Click Nosepiece to the lowest (shortest) setting Look into the Eyepiece Use the Coarse Focus

Using High Power Follow steps to focus using low power Click the nosepiece to the longest objective Do NOT use the Coarse Focusing Knob Use the Fine Focus Knob to bring the slide into focus