HAND LENS Meaning and
Definition
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A hand lens, also known as a magnifying glass or a loupe, is a simple optical device that consists of a small, curved lens mounted in a handle. It is designed to be held by hand and used to magnify objects and details, providing a closer and more detailed view than with the naked eye alone.
Generally, a hand lens has a convex lens that causes light rays to bend as they pass through it. This bending effect, or refraction, increases the size of the object being observed, resulting in a magnified image. By bringing the hand lens closer or farther away from the object, the level of magnification can be adjusted.
Hand lenses are commonly used in various fields such as biology, botany, geology, entomology, and archaeology. They are employed to closely examine organisms, plants, minerals, insects, and other small objects that require enhanced visual inspection. Their portability and ease of use make them a popular tool for outdoor activities and fieldwork.
Hand lenses are available in different magnification powers, typically ranging from 2x to 20x or higher. The magnifying power is indicated by a number followed by "x," which represents the factor by which the object will appear larger. For example, a 10x hand lens will make an object appear ten times larger than its actual size.
In summary, a hand lens is a handheld magnifying tool, consisting of a curved lens in a handle, used to enlarge objects for closer examination and analysis in various scientific and practical applications.
Common Misspellings for HAND LENS
- handless
- gand lens
- band lens
- nand lens
- jand lens
- uand lens
- yand lens
- hznd lens
- hsnd lens
- hwnd lens
- hqnd lens
- habd lens
- hamd lens
- hajd lens
- hahd lens
- hans lens
- hanx lens
- hanc lens
- hanf lens
- hanr lens
Etymology of HAND LENS
The word "hand lens" is a compound noun derived from two words: "hand" and "lens".
1. "Hand" comes from the Old English word "hand" which has Germanic origins. It is believed to have ultimately descended from the Proto-Indo-European root *kem(i)-, meaning "to bend or crook". The form "hand" has remained largely unchanged in English since the Old English period.
2. "Lens" comes from the Latin word "lens", which originally referred to a lentil (a type of legume). The term was adopted in medieval times to describe a convex glass for magnification purposes, as it resembled the shape of a lentil. Over time, the word "lens" also became used to describe similar devices made from other materials, such as hand-held magnifiers.
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