An object viewed from different angles can be recognized and distinguished from similar distractors after the viewer has had experience watching it rotate. It has been assumed that as an observer ...

Adjacent angles are one of the earliest and most important concepts to learn in basic geometry, as they have applications in further subjects like trigonometry, physics, and engineering. Effective ...

Inspired perhaps by Harry Potter's invisibility cloak, scientists have recently developed several ways -- some simple and some involving new technologies -- to hide objects from view. The latest ...