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focal length

back focal length POW.

calibrated focal length POW.

equivalent focal length OPT.

focal length of the lens POW.

Przykłady jednojęzyczne (niezredagowane i niesprawdzone przez PONS)

angielski
In the long focal length limit, the area of each zone is equal, because the width of the zones must decrease farther from the center.
en.wikipedia.org
Each radar range yields a zone plate strip with a focal length proportional to that range.
en.wikipedia.org
In the more general case, the distance to the foci is the focal length multiplied by the index of refraction of the medium.
en.wikipedia.org
Adjustable focus eyeglasses have one focal length, but it is variable without having to change where one is looking.
en.wikipedia.org
The density of the liquid, for example, has no effect on the focal length of the paraboloid.
en.wikipedia.org
With short focal length instruments a mirror diagonal is preferred over a prism.
en.wikipedia.org
When calculating the effective focal length, it is important to take into account the image format a camera uses.
en.wikipedia.org
The focal length is positive for a concave mirror, and negative for a convex mirror.
en.wikipedia.org
The curvature of field is determined by the sum of the dioptres, but the focal length is not.
en.wikipedia.org
The objective diameter of the telescope is 6.5 inches and it has a focal length of f/13.5.
en.wikipedia.org

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