1. EcE 301- Research Seminar I Germicidal Lamps Paul M. Cabacungan ATENEO DE MANILA UNIVERSITY Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than soft X-rays.electromagnetic radiation wavelengthvisible lightX-rays NameWavelengthWavelength range in nanometresnanometres UVA, long wave, or black lightblack light400 nm - 320 nm UVB or medium wave320 nm - 280 nm UVC, short wave, or germicidalgermicidalBelow 280 nm v = f λ

2. EcE 301- Research Seminar I Germicidal Lamps Paul M. Cabacungan ATENEO DE MANILA UNIVERSITY Black lights cause white objects to glow in the dark.

3. EcE 301- Research Seminar I Germicidal Lamps Paul M. Cabacungan ATENEO DE MANILA UNIVERSITY

4. EcE 301- Research Seminar I Germicidal Lamps Paul M. Cabacungan ATENEO DE MANILA UNIVERSITY The ballast, starter switch and fluorescent bulb are all wired together in a simple circuit.

5. EcE 301- Research Seminar I Germicidal Lamps Paul M. Cabacungan ATENEO DE MANILA UNIVERSITY

6. EcE 301- Research Seminar I Germicidal Lamps Paul M. Cabacungan ATENEO DE MANILA UNIVERSITY Sources: http://en.wikipedia.org/wiki/Ultraviolet WaterTech How Stuff Works