When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. Microscopic scale - Wikipedia

   en.wikipedia.org/wiki/Microscopic_scale

   The ratio of the focal length of the objective and the eyepiece, when mounted in a standard tube length, gives an approximate magnification of the system. Due to their design, compound microscopes have improved resolving power and contrast in comparison to simple microscopes, [11] and can be used to view the structure, shape and motility of a ...

3. Gemination - Wikipedia

   en.wikipedia.org/wiki/Gemination

   In phonetics and phonology, gemination (/ ˌ dʒ ɛ m ɪ ˈ n eɪ ʃ ən / ⓘ; from Latin geminatio 'doubling', itself from gemini 'twins' [1]), or consonant lengthening, is an articulation of a consonant for a longer period of time than that of a singleton consonant. [2]

4. Confocal microscopy - Wikipedia

   en.wikipedia.org/wiki/Confocal_microscopy

   Fluorescence and confocal microscopes operating principle. Confocal microscopy, most frequently confocal laser scanning microscopy (CLSM) or laser scanning confocal microscopy (LSCM), is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of using a spatial pinhole to block out-of-focus light in image formation. [1]

5. Microscopy - Wikipedia

   en.wikipedia.org/wiki/Microscopy

   Antonie van Leeuwenhoek (1632–1723). The field of microscopy (optical microscopy) dates back to at least the 17th-century.Earlier microscopes, single lens magnifying glasses with limited magnification, date at least as far back as the wide spread use of lenses in eyeglasses in the 13th century [2] but more advanced compound microscopes first appeared in Europe around 1620 [3] [4] The ...

6. Focal length - Wikipedia

   en.wikipedia.org/wiki/Focal_length

   The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, a concave mirror, and a convex mirror.. The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power.

7. Objective (optics) - Wikipedia

   en.wikipedia.org/wiki/Objective_(optics)

   Two Leica oil immersion microscope objective lenses; left 100×, right 40×. The objective lens of a microscope is the one at the bottom near the sample. At its simplest, it is a very high-powered magnifying glass, with very short focal length. This is brought very close to the specimen being examined so that the light from the specimen comes ...