Write the uses of hand lens, what is it most used for?
1 Answer
- to repair watch to see small parts by the mechanic
- to observe parts of flowers , insects etc.
A hand lens is a small device used to magnify something that an entomologist (or other naturalist) is looking at. A hand lens consists of a lens made of a piece of glass or plastic. The lens is usually attached to a frame that can be swivelled so the lens moves inside a protective cover.They are sometimes regarded as being the same as loupes, but precisely speaking a loupe is used in a close distance from the eye, while magnifying glasses (or hand lenses) are held at a larger distance. ... The lens is usually mounted in a frame with a handle.A small magnifying glass used by geologists to take a closer look at rocks. Commonly, hand lenses have 10x magnification power and fold into protective metal cases. Geologists use hand lenses to help identify minerals and fossils in rocks and also to take a closer look at rock textures and structures.
Hand lenses typically have magnification powers of 5×, 10×, 14×, and 20×. Some Hastings loupes can achieve magnification of 30×. Magnification power is directly tied to the size (diameter) of the lens, which is generally expressed in millimeters (“19.8mm" in the example given above).