One of the most important factors for successful indoor gardening is choosing the right grow lights. These lights replicate ...

You can turn on and off LED lights instantaneously because they don’t require a warm-up period like metal halide lamps. LEDs are safe for the environment. Fluorescent and mercury vapor lights contain ...

Standard gemological properties were measured with a Rayner refractometer (yttrium-aluminum-garnet prism) equipped with a near sodium–equivalent light source to measure refractive index and ...