Lab Practical

The maximum useful magnification for a light microscope is...

The 2 image forming lenses of a compound light microscope are...

Dyes are usually added to sections of biological specimens to increase...

What kind of microscope do you use if observing living surface of a finger?

What kind of microscope is used for observing a dye stained slide of a section of your finger?

What microscope is used for observing gold coated bacteria on a single cell of a finger?

What microscope is used when observing a unstained section of a biopsy from a finger?

WHat microscope is used when observing a heavy-metal-stained very thin section of a finger?

Forms a TV Like picture from a secondary electron signal, which is emitted from the surface points excited by a thin beam of electrons drawn across the surface in a raster pattern. Investigates fine structure of surface. (Usually dead specimens)

Increases resolving power by using electrons in a vacuum and magnetic lenses instead of light and glass lenses. Preservation of greater specimen detail allows for magnifications up to 1,000,000x or more (usually dead materials)

Converts phase differences in light to differences in contrast Observation of low contrast specimens (often Living)

Four steps when using compound light microscope.

The amt that an object image is enlarged

The extent to which detail in an image is preserved during the magnifying process

Focusesradiation emanating from an objective to produce an image