Definition of Refractors. Meaning of Refractors. Synonyms of Refractors

- lenses/telephoto lens/long-focus lens. Refractors were the earliest type of optical telescope. The first record of a refracting telescope appeared in the Netherlands...
- In optics, the refractive index (or refraction index) of an optical medium is the ratio of the apparent speed of light in the air or vacuum to the speed...
- In physics, refraction is the redirection of a wave as it p****es from one medium to another. The redirection can be caused by the wave's change in speed...
- great refractors. An example of prime achievements of refractors, over 7 million people have been able to view through the 12-inch Zeiss refractor at Griffith...
- (and color swaps of those), Sepia Refractors, Prism Refractors, Mosaic Refractors, and Pulsar Refractors. Some Refractor variants were tested and found to...
- Refractive error is a problem with focusing light accurately on the retina due to the shape of the eye and/or cornea. The most common types of refractive...
- This refraction is due to the velocity of light through air decreasing (the refractive index increases) with increased density. Atmospheric refraction near...
- Refraction, in acoustics, comparable to the refraction of electromagnetic radiation, is the bending of sound propagation trajectories (rays) in inhomogeneous...
- The next largest refractor telescopes are the James Lick telescope, and the Meudon Great Refractor. Most are classical great refractors, which used achromatic...
- Subjective Refraction is a technique to determine the combination of lenses that will provide the best corrected visual acuity (BCVA). It is a clinical...