Bannon Flashcards

1
Q

Magnification

A

The degree to which the size of an image is larger than the object itself

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2
Q

Magnification equation

A

I

A M

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3
Q

What is the max magnification?

A

X1500

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4
Q

What is the max resolution?

A

200nm

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5
Q

1mm=?

A

1000um

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6
Q

What are the units for graticules?

A

Epu

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7
Q

What are used to focus the electrons in a electron microscope?

A

Electromagnets

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8
Q

How big are typical animal cells?

A

20-40um

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9
Q

How big are typical plant cells?

A

10-100um

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10
Q

In a transmission electron microscope are the specimens living?

A

No dead and in a vacuum

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11
Q

What is the maximum magnification in a transmission electron microscope?

A

X500000

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12
Q

What is the maximum resolution in a transmision electron microscope?

A

0.1nm

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13
Q

Are the specimens living in a scanning microscope?

A

No dead and in a vacuum

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14
Q

What is the maximum magnification in a scanning electron microscope?

A

X100000

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15
Q

What is the maximum resolution in a scanning electron microscope?

A

10nm

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16
Q

What are the disadvantages of electron microscopes?

A

Electron beams can deflected by molecules in the air and so samples must be in a vacuum and so therefore dead

17
Q

Resoultion

A

The degree to which it is possible to distinguish between 2 objects that are very close together