What is the difference between enlargement and magnification

See Answer. Best Answer. Study guides. Genetics 20 cards. What are chromosomes made of. How are mitosis and meiosis similar. What is a gel electrophoresis chamber. In pea plants what are the two alleles for color. Biology 20 cards. Which part of the cell membrane prevents the cell from dissolving in water.

What is it called when a molecule uses energy to move across a semipermeable membrane. Why is the phloem in a leaf important to the roots of a plant. What is the name for the protective structure that forms around an embryo. What is the basic unit of a nucleic acid. Which of the following is an organic molecule. What is the main function of starch in plants.

Which type of protein makes up connective tissue. Q: What is the difference between enlargement and magnification? Write your answer Related questions. Is there a difference between 40x magnification and x magnification? What is enlargement with a microscope called? Difference between job enrichment and job enlargement? How does magnification and resolution compare? What is the difference between magnification and resolution? What is the difference between magnification resolution?

What is meant by the term magnification? The labels represent various parts of the human eye: Bruch membrane B ; choroid C ; retinal pigment epithelium RPE ; and retinal rod cells R. The scale bar is 2um. Provided by : Wikimedia. Located at : commons.

Provided by : Wikipedia. Located at : en. Provided by : Wiktionary. Objective two:. Objective three:. Objective four:.

In the above list, for each objective, circle just the magnification factor for that objective. Remember, the magnifying factor is a whole number, and differs for each different objective. Objective one:. If you observed two features on a slide with your naked eye that were 0. Skip to main content. Module 4: Microscopy I — The Basics. Search for:. The objective has several major functions:. The intermediate image plane is usually located about 10 millimeters below the top of the microscope body tube at a specific location within the fixed internal diaphragm of the eyepiece.

The distance between the back focal plane of the objective and the intermediate image is termed the optical tube length. Note that this value is different from the mechanical tube length of a microscope, which is the distance between the nosepiece where the objective is mounted to the top edge of the observation tubes where the eyepieces oculars are inserted.

The eyepiece or ocular, which fits into the body tube at the upper end, is the farthest optical component from the specimen. In modern microscopes, the eyepiece is held into place by a shoulder on the top of the microscope observation tube, which keeps it from falling into the tube.

The placement of the eyepiece is such that its eye upper lens further magnifies the real image projected by the objective. The eye of the observer sees this secondarily magnified image as if it were at a distance of 10 inches 25 centimeters from the eye; hence this virtual image appears as if it were near the base of the microscope. The distance from the top of the microscope observation tube to the shoulder of the objective where it fits into the nosepiece is usually mm in a finite tube length system.

This is known as the mechanical tube length as discussed above. The eyepiece has several major functions:. The factor that determines the amount of image magnification is the objective magnifying power , which is predetermined during construction of the objective optical elements. An important feature of microscope objectives is their very short focal lengths that allow increased magnification at a given distance when compared to an ordinary hand lens illustrated in Figure 1.

The primary reason that microscopes are so efficient at magnification is the two-stage enlargement that is achieved over such a short optical path, due to the short focal lengths of the optical components.

Eyepieces, like objectives, are classified in terms of their ability to magnify the intermediate image. Their magnification factors vary between 5X and 30X with the most commonly used eyepieces having a value of 10XX. Total visual magnification of the microscope is derived by multiplying the magnification values of the objective and the eyepiece. For instance, using a 5X objective with a 10X eyepiece yields a total visual magnification of 50X and likewise, at the top end of the scale, using a X objective with a 30X eyepiece gives a visual magnification of X.

Total magnification is also dependent upon the tube length of the microscope. Most standard fixed tube length microscopes have a tube length of , , , or millimeters with millimeters being the most common for transmitted light biomedical microscopes.

Many industrial microscopes, designed for use in the semiconductor industry, have a tube length of millimeters. The objectives and eyepieces of these microscopes have optical properties designed for a specific tube length, and using an objective or eyepiece in a microscope of different tube length will lead to changes in the magnification factor and may also lead to an increase in optical aberration lens errors.

Infinity-corrected microscopes also have eyepieces and objectives that are optically-tuned to the design of the microscope, and these should not be interchanged between microscopes with different infinity tube lengths. Modern research microscopes are very complex and often have both episcopic and diascopic illuminators built into the microscope housing.

Design constrictions in these microscopes preclude limiting the tube length to the physical dimension of millimeters resulting the need to compensate for the added physical size of the microscope body and mechanical tube. This is done by the addition of a set of parallelizing lenses to shorten the apparent mechanical tube length of the microscope. These additional lenses will sometimes introduce an additional magnification factor usually around 1.

This additional magnification factor is referred to as a tube factor in the user manuals provided by most microscope manufacturers. Thus, if a 5X objective is being used with a 15X set of eyepieces, then the total visual magnification becomes