Most of the Office applications let you insert shapes. One shapes is a line; however, laying a straight line can be tricky. Test it for yourself. In any application, display the Drawing toolbar by ...

While writing the 3D imagery post we came across this oddity: If you draw a path in Google Earth, the line segments follow geodesics, which are parts of great circles. If you draw a polygon, the sides ...

Part of the GNU community of free software, GIMP – an acronym for GNU Image Manipulation Program – offers a thrifty and capable alternative to pricey image editing software like Adobe Photoshop, ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...