Harvard scientists created a light beam called an “optical rotatum” that twists and changes torque as it travels, mimicking natural spiral patterns. It offers new possibilities for controlling ...

i.e. coloured light beams projected horizontally and vertically into the sky.” The council’s highways officer said of the plans: “Overall, the proposed advertisements will be modest in size ...

College of Light Industry and Textile, Qiqihar University, Qiqihar 161006, PR China ...

It transmits data wirelessly through focused, invisible beams of light, typically in the near-infrared spectrum Leading the project is Mahesh Krishnaswamy, who suffered from limited internet access in ...

Beams of light can be twisted to form optical vortices that take a similar shape; optical vortices are often used for wireless transmission of data, the creation of holograms, and numerous other ...