Tags » Ultraviolet Light


We fair-haired or fair-skinned folks have learned to be cautious in our dealings with outdoor activities.  The Sun is both our friend and our foe.  We learned, sometimes the physically painful way, to protect ourselves from solar radiation. 530 more words


HVAC Coils — Keeping Them Clean

Keeping condensing and cooling coils clean increases their efficiency by 15%-30% depending on what research paper you read. The problem with most of these coils is they are difficult to get at or inside the AHU and require shutting the system down — which may not be a viable option. 745 more words

HVAC Articles

Heliogravure III - Ultraviolet Light with Digital Screen

Updated 26/01/2016

Hardening the gelatin. In heliogravure, it is necessary an illumination source rich in ultraviolet (UV) light. This UV light must provoke the cross link reaction into the gelatin previously sensitized with potassium bichromate (K2Cr2O7). 1,467 more words

Early Photography

What is Psoriasis?

What is psoriasis? Red, dry, flaky patches of skin, called psoriatic plaque is indicative of the condition. These can occur in several areas around the body including the face and scalp line. 327 more words

Pain Management

How Far is the Other Side?

There is far too much evidence to deny the existence of some sort of continuance of life beyond what we call death. Just what that existence consists of is conjecture; but the energy that we are made up of just doesn’t disappear when we leave our bodies. 305 more words

Study shows UV light-emitting robot reduces hospital-associated infections by 30%

Memphis, TN’s Tru-D SmartUVC touted the results of a study funded by the U.S. Centers for Disease Control and Prevention, which found that its ultraviolet light-emitting robot reduced the risk of acquiring hospital-associated infections by more than 30%. 56 more words

Medical Technology