Engineers are turning what used to be a bulky optics bench into something that fits on the tip of a finger, and the latest ...

The Friends of Arlington's Planetarium will be hosting two special evenings of laser shows at the David M. Brown Planetarium ...

Researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow, opening new possibilities for technologies that could use a laser beam to control ...

The Beth Sholom synagogue in Elkins Park, designed by Frank Lloyd Wright, is an unusual building even among the famed architect’s unique built works. Some have described it as a spaceship that landed ...

When two black holes merge or two neutron stars collide, gravitational waves can be generated. They spread at the speed of ...

Researchers have created visible lasers of very pure colors from near-ultraviolet to near-infrared that fit on a fingertip. The colors of the lasers can be precisely tuned and extremely fast -- up to ...

For the experiment, a high-power green laser was directed through ruby cube and illuminated with a blue laser from the side. The green laser increases the optical absorption of the blue illuminating ...