The electricity!........ most the components in a standard incandescent bulb are not harmful. in compact flurescent lights there is small amounts of Mercury which can build up in the environment. however the amount in a single bulb is not enough to cause any trouble in humans.
The answer is ---- "Mercury"
If you are referring to low voltage lighting systems the current usually dictates 10 or 12 AWG, 10 is more common in my experience and the wire usually used is stranded.
parallelCommentSeries street lighting is quite common.
The most common use is as a dietary supplement, added to table salt. It is also used in a number of medications, and in metal halide lighting systems.
Water is an amphoteric substance.
The two most common systems of units are cgs and SI systems
Common salt is a compound (NaCl), not a mixture and is a pure substance (after refining).
A neutral substance is any substance that has the same number of protons and electrons. One common neutral substance is carbon dioxide. Another common neutral substance is nitrogen gas, N2.
A neutral substance is any substance that has the same number of protons and electrons. One common neutral substance is carbon dioxide. Another common neutral substance is nitrogen gas, N2.
Tuesday
The two most common systems of units are cgs and SI systems
Compact Fluorescent Lamp (CFL) lighting is pretty common nowadays, and can be found in most local hardware stores, such as Bunnings or Mitre 10, as well as specialist lighting stores such as Oz Lighting.