Agriculture Reference
In-Depth Information
bulb's socket. The ballast plugs into a domestic light socket like the
one you have in your home. Some ballast types even have a built-in
timer.
When buying a lighting system it is recommend that you buy
a complete system and an extra bulb. Check to make sure that the
lighting system meets safety regulations and has some sort of
guarantee with it.
Figure 5.5 - This is an example of what an external ballast looks like.
You might be able to see the timer on top of it.
LIGHT BANDS
Light can be separated into a spectrum, which form the colors
of the rainbow. Red, Orange, Yellow, Green, Blue, Indigo, Violet.
Each of these lights mix down to give white light. Artificial lights,
because of their nature, tend to lean towards a tint of one of these
colors when they mix down to form white light.
The electro-magnetic spectrum is a term used in lighting to
