THE compensation method of obtaining the birefringence of an object seen in a polarizing microscope requires the evaluation of the optical path-difference produced by a known thickness. In elongated ...

When we look out at the Solar System, we see objects of all sizes – from tiny grains of dust, to giant planets and the Sun. A common theme among those objects is the big ones are (more or less) round, ...

1 We use a grid- and simulation-based approach to extend point pattern analysis to deal with plants of finite size and irregular shape, and compare the results of our approach with that of the ...

Regular shapes are shapes where the lengths of the sides are equal, as well as the inside angles. Irregular shapes are not so simple; their sides and angles are not the same size. Some examples of ...

Power sanders have been used for years to eliminate laborious hand sanding. The handheld Rotary Drum Sander from Frank Houghton uses a novel method to fix and rotate the sanding drum and smooth curved ...