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The dot planimeter differs from other types of planimeter, which measure the area of a shape by passing a device around its boundary. [ 5 ] The Steinhaus longimeter is a similar transparency-based device for estimating the length of curves by counting crossings.
To measure planimetrics a planimeter or dot planimeter is used. This rather advanced analog technology is being taken over by simple image measurement software tools like, ImageJ, Adobe Acrobat, Google Earth Pro, Gimp, Photoshop and KLONK Image Measurement which can help do this kind of work from digitalized images.
The images show the principles of a linear and a polar planimeter. The pointer M at one end of the planimeter follows the contour C of the surface S to be measured. For the linear planimeter the movement of the "elbow" E is restricted to the y-axis. For the polar planimeter the "elbow" is connected to an arm with its other endpoint O at a fixed ...
In application areas, the dot planimeter is a transparency-based device for estimating the area of a shape by counting the grid points that it contains. [26] The Farey sequence is an ordered sequence of rational numbers with bounded denominators whose analysis involves Pick's theorem. [27]
President Donald Trump said Friday that a first round of tariffs on Canada, Mexico, and China will begin on his self-imposed deadline Feb. 1 but that some duties on oil and gas may be limited.
Wreckage of a crashed plane found about 34 miles southeast of Nome, Alaska, on Feb. 7, 2025. The crashed plane is believed to be a Bering Air Caravan carrying 10 people which went missing on Feb. 6.
Whether you’re looking for the best Valentine’s Day chocolates or a budget-friendly gift, Amazon knows what people are shopping for — after all, the online marketplace has more than 300 ...
In Kosovo, a state-owned energy company plans to destroy a village to make way for expanded coal mining as the government and the World Bank plan for a proposed coal-burning power plant. The government has already forced roughly 1,000 residents from their homes. Many former residents claim officials violated World Bank policy requiring borrowers to restore their living conditions at equal or ...