VIVOSUN Hydroponic 600 W comes with a 6" Reflector to multiply the light and produce 2100K high-PAR value. The inside fan dissipates 25% heat generated, keeping the light 15% longer lasting. Other ...

“Martha,” from R.J. Cutler, argues that she was ahead of her time. But though she sits for a lengthy interview, this isn’t hagiography. By Alissa Wilkinson In his latest (and perhaps last ...

An example of this is incandescent lamps, which were gradually phased out from 2009. Harmonised standards are rules that have been adopted by the European standardisation bodies (CENELEC and CEN The ...