The chaos of our world and its relentless speed have created an invisible leadership crisis. The pull to do more and respond faster leaves even seasoned professionals depleted. Work cultures that ...

A rank‐two tensor is built out of the 4‐velocities of two inertial observers, which corresponds precisely to the most general Lorentz matrix connecting the two Cartesian frames of the observers. The ...

Draw the line of reflection. From a point on the shape, count how far it is vertically from the line of reflection. Count the same amount horizontally on the other side of the line and plot the point.

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...

Each challenge shows a red shape and its image (outline) under a single unknown transformation (either a reflection, rotation, or translation). Drag the red shape to observe the behavior of its image.