If you have a Sharpie and a laser pointer, you can conduct a pretty cool home science experiment — trapping a tiny particle of marker in a beam of light. Engineer Joseph Colosimo made the ...

Laser pointers people aim at planes flying overhead can’t permanently damage a pilot’s vision, according to a medical study by University College of London.

This experiment makes a straight laser beam appear to bend into a curve. Fasten a laser pointer to a flat surface, positioned so it shines horizontally through a full plastic water bottle.

When green laser pointers first hit the market in the 1990s, they would set you back about $400. These days, they go for as low as $7.75 on Amazon.

In this home experiment, a laser pointer was shone through a drop of water collected from the base of a potted plant and the magnified image projected on an opposing wall.

On the ground, laser pointers appear to have a weak, ... (1 watt) for science experiments. In New South Wales, Australia, where pointers above 1 mW have been banned since 2008, ...

Laser pointers people aim at planes flying overhead can’t permanently damage a pilot’s vision, according to a medical study by University College of London.

Laser pointers people aim at planes flying overhead can’t permanently damage a pilot’s vision, according to a medical study by University College of London.