If you missed the original $35 Tutorial for the Best Training Aid in Golf, watch it here: The Lightstick is Coach Ed's ...

Step into a powerful reflection study with this realistic Man in the Mirror drawing that captures depth, symmetry, and emotion. This step-by-step portrait tutorial demonstrates how to create ...

Lasing is much more difficult at X-ray frequencies than with visible light. The conditions that enable electrons in an atom to stay at sufficiently high energy levels to produce an X-ray laser cannot ...

Abstract: High-precision on-orbit pointing calibration of the Optical Telescope Assembly (OTA) of laser communication terminal (LCT) is a critical prerequisite for rapid acquisition and tracking of ...

Abstract: Controlling laser beam to be directed toward a tracking target with high accuracy is necessary in free-space optical communications and laser processing. If an optical center of a high-speed ...

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