Search results
Results from the WOW.Com Content Network
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 ...
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.
An optical comparator (often called just a comparator in context) or profile projector is a device that applies the principles of optics to the inspection of manufactured parts. In a comparator, the magnified silhouette of a part is projected upon the screen, and the dimensions and geometry of the part are measured against prescribed limits .
In forestry, cartography, and geography, the dot planimeter has been applied to maps to estimate the area of parcels of land. [1] [4] [5] [6] In botany and horticulture, it has been applied directly to sampled leaves to estimate the average leaf area. [7] [8] [9] In medicine, it has been applied to Lashley diagrams as an estimate of the size of ...
Keuffel and Esser Company listed logarithmic paper in their general catalog as "Durand's Logarithmic Paper" as late as 1936. [10] In 1893, Durand published a paper mathematically describing a radial planimeter for averaging values plotted in polar coordinates. Originally a radial planimeter was of academic interest only, but ten years later ...
The Kelsh Plotter is an example of the projection stereoplotters. The analog stereoplotters came next and were more sophisticated in that they used more sophisticated optics to view the image. The analytical stereoplotter is used today. It incorporates a computer which does the work of mathematically aligning the images so that they line up ...
Gott first thought of his "Copernicus method" of lifetime estimation in 1969 when stopping at the Berlin Wall and wondering how long it would stand.Gott postulated that the Copernican principle is applicable in cases where nothing is known; unless there was something special about his visit (which he did not think there was) this gave a 75% chance that he was seeing the wall after the first ...
Fig.1: Wineglass model for IMRaD structure. The above scheme shows how to line up the information in IMRaD writing. It has two characteristics: the first is its top-bottom symmetric shape; the second is its change of width, meaning the top is wide, and it narrows towards the middle, and then widens again as it goes down toward the bottom.