Are mirrors good for reflecting light?

  Added by: MedMan  Last edited by: MedMan  Viewed: 403 times  Rated by 5 users: 4.00/10

Mirrors waste energy by absorbing only a small fraction of the light that falls on them.

When light, which, like radio waves, is a form of electromagnetic radiation, strikes a metallic mirror the electrons in the metal move just as they do when a radio signal strikes an antenna. Pushing electrons around takes energy, which dims the reflected image.

Metallic mirrors reflect infrared light (heat) and if your mirror has imperfections this will cause hot spots, which can burn plants. Please note hot spots also apply to Mylar and Foil and IMO is not applicable to growers using small amounts of fluorescent lighting.

By using a mirror to reflect your light on a wall, you can test for imperfections, if you see an uneven image, with focused beams (normally located at the edge of the reflected pattern) these are known as hot spots and depending on the wattage of your bulb, may burn your foliage.

Metallic mirrors should not be used as a reflector for your grow room as minimizing light loss is important.

  Last modified: 20:18 - May 31, 2001 

GrowFAQ © 2000-2004 Overgrow
faq:1000 "Are mirrors good for reflecting light?"