Telescope

Question 1

What is Magnification?

Answer 1

Making objects look bigger

Question 2

What is resolution?

Answer 2

Smallest seperation at which two objects can be distinguised.

Question 3

What Limits the resolution of the Light Microscope?

Answer 3

Light waves as they are 100 to 700nm so anything closer than 200nm will appear as one.

Question 4

What is the maxium maginification?

Answer 4

1500x

Question 5

How do light microscopes work?

Answer 5

Light from the bulb under the stage goes through the condesner lense to the specimen then through the objective lense to the eyepeice.

Question 6

What are advanatges of the Light Microscope?

Answer 6

Cheap
Portable
Study living organisms

Question 7

Disadvantages of a Light Microscope?

Answer 7

Low Resolution
Low Magnification
Small organisms arn’t seen.

Question 8

What is another name for the Lasr Scanning Microscope.

Answer 8

Confocal

Question 9

Advanatges of a laser Scanning Microscope?

Answer 9

High Resolution
High Magnifiction
3D images
Scan structures without damaging organisms

Question 10

Disadvanatge of Laser Scanning Molecules?

Answer 10

Time Consuming

Lower resolution that Electron microscope.

Question 11

What do Electron Microscopes use?

Answer 11

Beams of electrons

Question 12

What are the two types of Electron Microscope.

Answer 12

TEM & SEM

Question 13

Which one (SEM or TEM ) has the best resolution?

Answer 13

TEM

Question 14

Which one (SEM or TEM )is the most common?

Answer 14

TEM

Question 15

What is the maxium magnification of TEM?

Answer 15

x50,0000

Question 16

What is the magnifiaction of SEM?

Answer 16

x100,000

Question 17

How do SEM work?

Answer 17

fine beam of electrons fired onto the surface.

Question 18

Advantages of SEM and TEM?

Answer 18

3D
higher reolution
higher magnification

Question 19

Disadvantages of SEM and TEM?

Answer 19

Has to be in a vaccum as beams of electrons are diflected by air.
expensive
Training and Skill
Stains needed as electrons have no colour