The PF600U is three devices in one, combing a simple full HD projector with a Bluetooth speaker and standing floor lamp. It weighs 16 pounds 8 ounces (7.5kg) and features two speakers of unknown ...

Sunlight has UV rays, along with other kinds of rays. Some light bulbs give off UV rays, too. UV light bulbs are used in tanning beds and lamps, some nail dryers, machines used by dermatologists, and ...