Effectivefocal lengthformula

Always look at the units that have been given in the question - if you are asked to measure something, most often you will be expected to measure it in millimetres NOT in centimetres - double check the question to see!

Nov 13, 2015 — In his studies on polarized light, Brewster discovered that when light strikes a reflective surface at a certain angle (now known as Brewster's ...

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The diffraction grating is an optical component that splits light into various beams that travels in various direction. The split light will have maxima at ...

An image of an animal cell is 30 mm in size and it has been magnified by a factor of x 3000. What is the actual size of the cell?

Focal length calculatorlenses

This skill most frequently comes up in paper 5 and 6 (although it also comes up in the multiple choice and occasionally the theory paper) and you will definitely have to calculate either magnification, drawing size or actual size in a least one paper. To ensure you do not lose marks:

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Focal length Calculatortelescope

The theoretic value of the focal length calculation serves to find the best suitable optics. Typical increments of focal lengths for C-mount lenses are e.g. (1.8, 2.8, 4, 6,) 8, 12, 16, 25, 35, 50 and 75 mm.

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Race, performance and exotic sports cars utilize the same principle - efficient use of every millimeter under the fender, resulting in optimum performance.

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The focal length f´ virtually serves to calculate the required lens and is thus the most important specification to characterise an (entocentric) normal lens.

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by E Gaviola · 1936 · Cited by 39 — If the knife-edge is displaced until it touches the image and the eye is placed close behind this, looking at the mirror face, it can be observed that as the ...

Rearranging the equation to find things other than the magnification becomes easy when you remember the triangle - whatever you are trying to find, place your finger over it and whatever is left is what you do, so:

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On this thousandth micrometer, the smallest difference between indications is divided by ten by a vernier engraved in the shealth. This way, the resolution will ...

Anti-glare/reflective coating lets the light pass through the lenses into your eyes, to the back of the eyes, where it is needed. AR does not allow the ...