Laser
New laser design could have environmental, homeland security applications.
Simulation assesses odds of intercepting interstellar communications.
A simple laser scan could quickly identify pathogens in food and in the environment.
A new device promises to provide an inexpensive way of identifying traces of dangerous materials.
Once the stuff of science fiction, laboratory tractor beams are grabbing onto small objects in the lab.
Lasers have come a long way since the earliest focused light beams were created.
A university in Texas is trying to build the most powerful laser in the world.