Forget hunting for a tape measure or a protractor. Use your Android phone camera and sensors to handle different types of measurements easily.

Abstract: A wide-angle mode parabolic equation is obtained from the horizontal refraction equation by using the rational-linear approximation of the square-root operator. A finite-difference scheme ...

Was a new regional power, once thought of as a bloodthirsty invading force, actually a catalyst for ancient Egypt’s most prosperous era? Egypt’s carefully recorded lists of rulers run pharaoh after ...