What is the function of the revolving nose piece?
Revolving Nosepiece or Turret: This is the part that holds two or more objective lenses and can be rotated to easily change power. Objective Lenses: Usually you will find 3 or 4 objective lenses on a microscope. They almost always consist of 4X, 10X, 40X and 100X powers.
What is the revolving nosepiece on a microscope?
The revolving nosepiece is the inclined, circular metal plate to which the objective lenses, usually four, are attached. The objective lenses usually provide 4x, 10x, 40x and 100x magnification. The final magnification is the product of the magnification of the ocular and objective lenses.
What is the purpose of the revolving nose piece quizlet?
–Revolving Nosepiece: Rotates the objective lenses of different magnifications and allows one of them to be positioned over the slide.
How is the revolving nosepiece helpful in studying specimen?
This allows the user to locate objects using a low power lens and then examine the objects more closely with the high power one. If the microscope did not provide a revolving nosepiece, the microscope would only provide one level of magnification.
What is the purpose of the revolving nosepiece quizlet?
Which part of the microscope allows you to move the stage up and down in very small finite increments?
PARTS OF THE MICROSCOPE
| A | B |
|---|---|
| COARSE ADJUSTMENT KNOB | This part moves the stage up and down to help you get the specimen into view. |
| FINE ADJUSTMENT KNOB | This part moves the stage slightly to help you sharpen or “fine” tune your view of the specimen. |
Which device regulates the amount of light entering a microscope?
The condenser is equipped with an iris diaphragm, a shutter controlled by a lever that is used to regulate the amount of light entering the lens system. Above the stage and attached to the arm of the microscope is the body tube. This structure houses the lens system that magnifies the specimen.
What type of microscope uses an annular stop?
a phase-contrast microscope.
Which part connects the eyepiece to the revolving nosepiece with the objectives?
Body tube (Head): The body tube connects the eyepiece to the objective lenses. Therefore The part of the microscope which connects the mount of the eyepiece to revolving nosepiece alongwith the objective is called Body tube.
What is the function of the annular diaphragm in a phase contrast microscope?
An annular aperture in the diaphragm is placed in the focal plane of the sub-stage which controls the illumination of the object. This is located below the condenser of the microscope. This annular diaphragm helps to create a narrow, hollow cone of light to illuminate the object.
Which part of the microscope will you use to get a sharp focus of the object being examined?
Fine Adjustment Knob – This knob is inside the coarse adjustment knob and is used to bring the specimen into sharp focus under low power and is used for all focusing when using high power lenses.
What is the 40x objective lens used for?
High Power Objective Lens (40x) The high-powered objective lens (also called “high dry” lens) is ideal for observing fine details within a specimen sample.