DRY OBJECTIVE Meaning and
Definition
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The term "dry objective" refers to an optical component commonly found in microscopes and other imaging devices. It is a type of objective lens that does not require the use of any immersion medium, such as oil or water, to improve the resolution and clarity of the image.
A dry objective lens is designed to be used with air as the medium through which light travels. It typically has a relatively low numerical aperture, indicating its ability to gather and focus light. This allows it to capture a wide range of light angles and produce a 3D image with good resolution.
Dry objectives are most commonly used in routine microscopy, where high magnifications and resolution are not necessary. They are suitable for simple observations and scans of various samples, including tissue sections, stained slides, or other transparent specimens.
Compared to immersion objectives, dry objectives have several advantages. They are much simpler to use since there is no need for special immersion oils or water. Furthermore, dry objectives are less expensive and require less maintenance compared to their immersion counterparts. However, it is important to note that the image quality provided by dry objectives is generally lower than that of immersion objectives, especially at high magnifications.
In summary, a dry objective is an optical lens that allows the user to observe and analyze specimens under a microscope using only air as the medium, without the need for immersion fluids.
Common Misspellings for DRY OBJECTIVE
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Etymology of DRY OBJECTIVE
The term "dry objective" is a compound term consisting of two words: "dry" and "objective".
The word "dry" originated from the Old English word "drȳge", which means "free from moisture" or "not wet". It has been in use since the Middle English period. The etymology of "dry" can be traced back to the Proto-Germanic word "drūgiz" and the Proto-Indo-European root "dʰrewgʰ-", both of which carried the sense of "dry" or "parched".
The word "objective" has a different origin. It comes from the Latin word "objectivus", which means "pertaining to an object". In its modern usage, "objective" refers to something that is unbiased, factual, or based on external reality rather than personal opinions or emotions.
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