White piedra is a superficial fungal infection of the hair. Several species of fungus that live in soil or dirty water can cause it. Piedra is the Spanish word for stone. White piedra appears as ...

Abstract: Phosphor-coated white LEDs have become the predominant lighting technology thanks to their energy efficiency. In recent years, interest in visible light communications (VLC) technology has ...

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In the aftermath of the storm, a bizarre phenomenon has taken Ireland by surprise: Filthy windows coated in a strange white substance. All across the country, people are reporting their home and ...

Record-breaking snow accumulations seen across the region Dangerous driving conditions persist due to ice and snow At least a dozen people died due to the weather ATLANTA, Jan 23 (Reuters) - The ...