What Are the Functions of Objective Lenses? - ocular lens function
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Jan 22, 2021 — Magnification is how much bigger the image is than the actual object. Magnification is the number of different structures that can be identified ...
Aug 13, 2024 — Linear polarizer works in both directions, regardless of what side of the filter you put. The circular polarizer works only in one direction ...
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USB 3.0 cameras are high-speed digital cameras that use the USB 3.0 interface to transfer data to a computer. These cameras are popular in a wide range of ...
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A technique in which the normal performance of an instrument is deliberately degraded in such a way that the instrument's performance is actually improved for one specific application. It may be applied to optical and radio telescopes (where it is called tapering the antenna), and is particularly important in Fourier transform spectrometers where it leads to the elimination of spurious spectral features at the expense of a slight reduction in spectral resolution. A common application is the use of an apodizing screen in the observation of a close visual binary where the image of a faint companion star falls on one of the diffraction rings surrounding the Airy disk. A circular screen which gradually becomes opaque towards the edge reduces the brightness of the rings; a screen with a square aperture produces a cross-shaped diffraction pattern which can be rotated clear of the companion star.
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Oct 14, 2011 — 6 Answers 6 ... An easy way to summon up that image for most readers would be a reference to a hall of mirrors. If you want to talk about that ...
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Jan 30, 2015 — A pellicle is the term brewer's use for the layer that forms on top of the wort / beer in the fermenter (liquid-air interface). It can appear to ...
2021426 — Light can be polarised by passing it through a polarising filter. A polarising filter has all its molecules aligned in the same direction. As a ...
Jul 16, 2021 — Depth of field is directly connected, but not to be confused with, focus, which refers to the quality (i.e. the sharpness) of an object ...
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