Microscopy

TYPES OF MICROSCOPE


Light Microscope
>>Found in most schools
>>Uses compound lenses to magnify objects
>>The lenses bend or refract light to make the object beneath them appear closer

Stereoscope
>>This microscope allows for binocular (two eyes) viewing of larger specimens
>>Usually magnifies 10x to 25x
>>Can be used for thicker specimen
>>Creates a 3D view of specimen

MAGNIFICATION
>>3 types of magnification: Scanning, Low power, High power. Each objective will have written the magnification.
>>In addition to this, the ocular lens (eyepiece) has a magnification.
>>The total magnification is the ocular x the objective.

Scanning - Red ring
Low power - Yellow ring
High power - Blue ring

We can see better details with high power but we cannot see as much as the image.

PRACTICAL: GETTING STARTED ON MICROSCOPE WORK


Question: Does the object appear normal or upside down (under the microscope)?
Answer: Upside down.

Move the slide a tiny bit away from you while observing the object in the microscope.
Question: Does it move away from you or toward you?
Answer: It moves towards me.


Question: Is the field of view larger or smaller when you turn the fine adjustment knob?
Answer: Smaller.


Question: In changing from low power to high power has the position of the image changed?
Answer: Yes, it has.


Here is a picture I took of 3 different coloured threads (blue, green and black) when they were under the microscope.

3 different coloured threads under the microscope