Untitled Deck Flashcards

1
Q

What is the primary function of optical microscopes?

A

Optical microscopes use visible light (or UV) to sharply magnify samples.

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2
Q

What is a Stereo Microscope?

A

A Stereo Microscope, also known as a dissecting microscope, magnifies up to about 100x and provides a 3-dimensional view of the specimen.

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3
Q

What is the maximum magnification of a Compound Microscope?

A

The maximum useful magnification of a Compound Microscope is about 1000x.

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4
Q

What is a Confocal Laser Scanning Microscope?

A

Confocal Laser Scanning Microscopes can scan a sample in depth and assemble it into a 3D image using a computer.

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5
Q

What are Electron Microscopes used for?

A

Electron Microscopes are the most advanced microscopes, using accelerated electrons to magnify objects up to 2,000,000x.

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6
Q

What is the advantage of Electron Microscopes over light microscopes?

A

Electron Microscopes have a higher resolving power due to the much shorter wavelength of high energy electrons.

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7
Q

What is required to prepare a specimen for an Electron Microscope?

A

Specimens may require complete dehydration and can be coated with a sleek layer of metal for easy observation.

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8
Q

What are Scanning Electron Microscopes characterized by?

A

Scanning Electron Microscopes have lower magnifying power but provide a 3D perspective of objects.

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9
Q

What do X-ray Microscopes use to create images?

A

X-ray Microscopes use a beam of x-rays to create high-resolution 3D images.

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10
Q

What is a significant advantage of X-ray Microscopes?

A

X-ray Microscopes allow observing the structure of living cells and can slice together thousands of images to generate a single 3D X-ray image.

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11
Q

What is the technology behind Scanning Helium Ion Microscopes?

A

Scanning Helium Ion Microscopes use a beam of Helium ions to generate images, leaving the sample mostly intact.

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12
Q

What do Scanning Acoustic Microscopes use to generate images?

A

Scanning Acoustic Microscopes use focused sound waves to generate images.

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13
Q

What is the primary application of Scanning Acoustic Microscopes?

A

They are primarily used to study the physical properties of biological structures and detect small cracks or tensions in materials.

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14
Q

What is the current status of Neutron Microscopes?

A

Neutron Microscopes are still under experimental stages and may offer better contrast than other forms of microscopy.

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15
Q

What do Scanning Probe Microscopes visualize?

A

Scanning Probe Microscopes help visualize individual atoms by measuring the surface structure of the sample.

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16
Q

How do Scanning Probe Microscopes generate images?

A

The image of the atom is computer-generated based on the electrical current that flows through a small tip measuring the surface structure.