focal ratio sentence in Hindi
Sentences
Mobile
- For a telescope, the diameter of the exit pupil can be calculated by dividing the focal length of the eyepiece by the focal ratio ( f-number ) of the telescope.
- :It's actually quite difficult to make a'fast'Newtonian reflector & ndash; that is, one with a small focal ratio that will fit in a short tube & ndash; that produces good images.
- In photography the focal ratio varies the focal-plane illuminance ( or optical power per unit area in the image ) and is used to control variables such as depth of field.
- The effective aperture is expressed by an f-number or f-stop ( derived from " focal ratio " ), which is proportional to the ratio of the focal length to the diameter of the aperture.
- The maximum usable aperture of a lens is specified as the focal ratio or f-number, defined as the lens's focal length divided by the effective aperture ( or entrance pupil ), a dimensionless number.
- In addition, the telescope allows very high-quality infrared observations due to the advanced protected silver coating of its mirrors, its small secondary mirror ( due to the f16 focal ratio ), and advanced ventilation systems.
- Numerically large focal ratio slower ( bigger number ) than f / 12 is generally considered slow, and any telescope with a focal ratio faster ( smaller number ) than f / 6, is considered fast.
- Numerically large focal ratio slower ( bigger number ) than f / 12 is generally considered slow, and any telescope with a focal ratio faster ( smaller number ) than f / 6, is considered fast.
- So somehow they saw such an unfocused rainbow blur of colors with sane focal ratios but no one thought of using colored eyepiece glass or something ? talk ) 20 : 00, 7 June 2012 ( UTC)
- As with any lens, increasing the focal ratio of the lens increases depth of field by reducing the level of blur of out-of-focus objects ( compare the effect of aperture on depth of field in photography ).
- :: If it's so stubby then maybe the field of view is wider and they gave it more megapixels to compensate, due to a lower focal ratio . talk ) 19 : 09, 27 June 2012 ( UTC)
- The effect is proportional to the fourth power of the diameter and inversely proportional to the third power of the focal length, so it is much more pronounced at short focal ratios, i . e ., " fast " lenses.
- Unfortunately, the only large aperture wide-field telescopes before Schmidt were ordinary reflecting telescopes of short focal ratio ( about f / 3 ), and these presented images which while sharp at the middle of their fields of view, quickly lost their definition away from the field center.
- They are relatively short for their aperture . ( Because the light path is folded, the real focal ratio is slower than the length would suggest, i . e . slower than the f / 5 you estimate . )-- talk ) 00 : 36, 5 December 2007 ( UTC)
- Just for information, could you tell me wich telescope is the brighter ( for visual observation of galaxies, nebulae, clusters, . . . ) : a " Newton 200mm / 1000mm " ( focal ratio = 5 ) or a " Schmidt-Cassegrain 305mm / 3048mm ( focal ratio = 10 )?
- For example, a greater degree of barrel and pincushion distortion is tolerated in lenses that span the focal length range from wide angle to telephoto with a focal ratio of 10?or more than would be acceptable in a fixed focal length lens or a zoom lens with a lower ratio.
- Just for information, could you tell me wich telescope is the brighter ( for visual observation of galaxies, nebulae, clusters, . . . ) : a " Newton 200mm / 1000mm " ( focal ratio = 5 ) or a " Schmidt-Cassegrain 305mm / 3048mm ( focal ratio = 10 )?
- Because it was targeted at the novice market the telescope had its limitations : The general design was for low power hand-held or wide-angle work, the short f / 4 focal ratio did not allow for high magnification without the image degrading, and the primary mirror was factory aligned with no provisions for adjustment.
- More Sentences: 1 2
focal ratio sentences in Hindi. What are the example sentences for focal ratio? focal ratio English meaning, translation, pronunciation, synonyms and example sentences are provided by Hindlish.com.