### Some articles on *magnification, angular magnification*:

Magnification As A Number (optical Magnification) - Sheldon's Calculations

... Single lens The linear

... Single lens The linear

**magnification**of a thin lens is where is the focal length and is the distance from the lens to the object ... lens to the image, the height of the image and the height of the object, the**magnification**can also be written as Note again that a negative**magnification**implies an inverted image ... When the focal length is positive the image's height, distance and**magnification**are real and positive ...Magnification As A Number (optical Magnification) - Measurement of Telescope Magnification

... Measuring the actual

... Measuring the actual

**angular magnification**of a telescope is difficult, but it is possible to use the reciprocal relationship between the linear**magnification**and the**angular magnification**... objects at the distance for which the**angular magnification**is to be determined and then the object glass is used as an object the image of which is known as the exit pupil ... will be much smaller than the object glass diameter, which gives the linear**magnification**(actually a reduction), the**angular magnification**can be determined ...Main Site Subjects

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