Numberblock Seventeen is hosting a big area art challenge. Numberblocks One, Three and Four need to cover a canvas with ...

Working with area model to measure area, part 2.

The Surface Area Measurement Tool uses Google satellite technology to find any location anywhere. Once an address is entered into the appropriate text box, the map can be zoomed in and out as needed.

Grazing Incidence Interferometry Test Setup Diagram. Image Credit: Zygo Corporation Measuring Larger Surfaces It is useful for expanding the effective aperture of the interferometer, in one axis. The ...