The advantage of using a mercury vapor tube is that it provides a heat and light source. These products also tend to last longer than regular fluorescents. If you want to avoid mercury, LED UVB is ...

The semiconductor light-emitting diode, or LED, is a key component of today's technology. Modern households have numerous tiny glowing indicators — provided by LEDs — that are used for reading ...

These plastic diffusers are available from a variety of companies. If you are affected by light sensitivity, look for light shields that have nanometer readings of 380 to 400. This ensures complete ...

You probably do your best to protect your skin from ultraviolet rays by slathering on sunscreen before going outside (and if you haven’t been, now’s a good time to start). But many people aren’t aware ...