What does a barrel do on a microscope?

What does a barrel do on a microscope?

The barrel is the upper part of the microscope and the part through which rays pass between the eyepiece (above) and the objective lens (below). The barrel can usually be moved, i.e. adjusted upwards or downwards, in order to focus the microscope.

What do the parts of a microscope do?

Body tube (Head): The body tube connects the eyepiece to the objective lenses. Arm: The arm connects the body tube to the base of the microscope. Coarse adjustment: Brings the specimen into general focus. Fine adjustment: Fine tunes the focus and increases the detail of the specimen.

What do the numbers on the barrel of the microscope?

Microscope objective lenses will often have four numbers engraved on the barrel in a 2×2 array. The upper left number is the magnification factor of the objective. For example, 4x, 10x, 40x, and 100x. The upper right number is the numerical aperture of the objective.

What does the eyepiece do on a microscope?

1 Eyepiece Lens: the lens at the top that you look through. 2 Tube: Connects the eyepiece to the objective lenses. 3 Arm: Supports the tube and connects it to the base. 4 Base: The bottom of the microscope, used for support. 5 Illuminator: A steady light source used in place of a mirror.

How does the base of a compound microscope work?

Base: The base supports the microscope and it’s where illuminator is located. How Does a Compound Microscope Work? All of the parts of a microscope work together – The light from the illuminator passes through the aperture, through the slide, and through the objective lens, where the image of the specimen is magnified.

What is the function of the arm of a microscope?

Arm: The arm connects the body tube to the base of the microscope. Coarse adjustment: Brings the specimen into general focus. Fine adjustment: Fine tunes the focus and increases the detail of the specimen.