Incandescent Lamps Common for household lighting, incandescents are popular because their initial cost is low, but they are inefficient. Before the invention ... source of blue light. Therefore, they do not efficiently stimulate photosynthesis. ... They are used today as car headlights and similar applications. Tungsten halogensanbsp;...
|Title||:||Gardening Indoors with HID Lights|
|Author||:||George F. Van Patten, Alyssa F. Bust|
|Publisher||:||Van Patten Publishing - 1997|