There are 3 types of bulbs that work well as grow lights: metal halide, high pressure sodium (HPS), and fluorescent. Each type of light fixture has its own advantages and drawbacks. 1  Metal halide bulbs are compact and efficient, producing a very intense light from a small bulb.
The normalized difference vegetation index (NDVI) is a simple graphical indicator that can be used to analyze remote sensing measurements, typically but not necessarily from a space platform, and assess whether the target being observed contains live green vegetation or not.Contents.he normalized difference vegetation index (NDVI) is a simple graphical indicator that can be used to analyze remote sensing measurements, typically but not necessarily from a space platform, and assess whether the target being observed contains live green vegetation or not. Contents.
HDCVI - What is HDCVI video? High Definition Composite Video Interface, or more commonly referred to as HDCVI, is a type of high definition CCTV. While it shares some similar aspects, HDCVI is a type of its own. Offering much more affordable HD security cameras and digital video recorders (DVR), HDCVI is absolutely something worth looking into.