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An autocollimator works by projecting an image onto a target mirror and measuring the deflection of the returned image against a scale, either visually or by means of an electronic detector. A visual autocollimator can measure angles as small as 1 arcsecond (4.85 microradians), while an electronic autocollimator can have up to 100 times more ...
$ tex Angle_measure.tex && dvips -E Angle_measure.dvi; Outline fonts $ eps2eps -dNOCACHE Angle_measure.ps Angle_measure2.eps; Fix bounding box $ ps2epsi Angle_measure2.eps Angle_measure.eps; Convert to Sketch $ pstoedit -f sk Angle_measure.eps Angle_measure.sk; Convert to SVG $ skconvert Angle_measure.sk Angle_measure.svg; Fix Angle_measure.svg ...
The Apple Icon Image format (.icns) is an icon format used in Apple Inc.'s macOS. It supports icons of 16 × 16, 32 × 32, 48 × 48, 128 × 128, 256 × 256, 512 × 512 points at 1x and 2x scale, with both 1-and 8-bit alpha channels and multiple image states (example: open and closed folders). The fixed-size icons can be scaled by the operating ...
Original file (SVG file, nominally 200 × 100 pixels, file size: 676 bytes) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Many modern icons have a maximum size of 1024 by 1024 pixels or greater. The challenge of icon design is to create an image that is communicative, beautiful, and understandable, at every size from this maximum resolution down to the minimum resolution of 16 by 16 pixels.
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There are many variants of photogrammetry. One example is the extraction of three-dimensional measurements from two-dimensional data (i.e. images); for example, the distance between two points that lie on a plane parallel to the photographic image plane can be determined by measuring their distance on the image, if the scale of
A protractor is a measuring instrument, typically made of transparent plastic, for measuring angles. Some protractors are simple half-discs or full circles. More advanced protractors, such as the bevel protractor, have one or two swinging arms, which can be used to help measure the angle. Most protractors measure angles in degrees (°).