The prototype radiotherapy system combines a fixed vertical radiation beam with horizontal patient rotation. (Courtesy: Paul Liu) Radiation therapy plays a fundamental role in cancer treatment, but ...

The Sun turns, but not in the way a solid object would. It has no hard surface, no fixed edge to follow. What scientists describe as solar rotation co.

Scientists have just plotted changes in Earth's axis through laboratory measurements. To do this, they constructed the world's most stable ring laser. Previously, scientists were only able to track ...

Precision components are critical for the reliable operation of this unit. This spindle unit with an adjustable axis of rotation is the basis for coordinate measure machines, and should have very ...