Related Articles
Different light bulbs are needed for different areas of your home
You may think it is a no-brainer: A light bulb is a light bulb is a light bulb. But that is not true. There are various light bulb types and each is intended for a specific purpose.Most of us are familiar
with incandescent light bulbs. An incandescent bulb will yield a warm, steady
light, which is favorable for most household applications. The bulb can last
between 700 and 1,000 hours and can be used with a dimmer. If you prefer, you
can use bulbs that are soft white, which are coated and which diffuse the light
better.
This light bulb type uses
electricity to heat up the tungsten filament that is in the bulb, which makes
the bulb glow. The filament is situation either in a mixture of nitrogen/argon
gas or in a vacuum.
Tungsten tends to evaporate
and collect on the sides of the light bulb because of the high temperature of the filament, which causes the bulb to thin unevenly. When you turn on an
incandescent bulb, the burst of energy can result in the thin areas heating up
faster than the remaining part of the filament, which can result in the
filament breaking and the bulb burning out.
Another light bulb type is the fluorescent bulb, which works by a current passing through a tube
that is filled with mercury and argon gas. Light is produced when ultraviolet
radiation floods the phosphorous coating, which causes it to emit light. These
lights produce very little heat and are efficient.
Historically, the cool
white light color was the standard for fluorescent lights and lamps. There is a
wide variety of fluorescent colors available nowadays. Fluorescent light bulbs are
perfect for lighting large areas, such as a basement, where detail work is not
usually undertaken.
Fluorescent cannot be
used with dimmers and require ballasts to provide the correct amount of
voltage. There are two types of ballasts, including electronic and magnetic.
The electronic type remedies humming and flickering problems and are more
efficient than the magnetic ballast but they cost more.
When purchasing a fluorescent
bulb for lighting fixtures you will see the letter T, which means that that the bulb is tubular. The
number that comes after the T tells you what the diameter of the bulb is, in
eighths of an inch
A halogen bulb light,
which is a variation of an incandescent bulb, works by passing electricity
through filaments that are made of tungsten. The filament is contained in a
tube that is filled with halogen gas.
This gas causes a
chemical reaction to occur, which takes the tungsten from the wall of the glass
and puts it back onto the filament, which extends the life of the bulb; however, the filament needs to be hotter than what is
required for incandescent bulbs in order
for the chemical reaction to occur. A hotter filament produces a more brilliant
white light and produces more lumens per watt, which makes this an efficient
light bulb.
The disadvantage of this
light bulb type is it can become so hot that of if the bulb came into contact
with flammable material or a person it can cause a fire or burn the person. Hotter
filaments require that tungsten evaporate very fast, which means that a more expensive
fill gas or krypton is needed and it must be denser than that which is used for
other light bulbs. A thicker but smaller glass bulb is also necessary, which is
also more expensive. Because of the smaller bulb, the halogen bulb gets very
hot and can reach over 300 degrees C. Be careful where you place a halogen
blub. Do not touch the glass part of the bulb will your fingers because the oils
from your hand will ruin the strength of the bulb and shorten the life of the
bulb. When a bulb is weakened, it can burst.
A halogen light bulb is somewhat
more efficient and has a longer life than an incandescent bulb but they are
more expensive and must be used correctly so that do not produce a can potentially be a fire hazard.
Another light
bulb type is the compact fluorescent lamp, which is a modern light bulb that works like
a fluorescent bulb but which comes in a smaller package. These products are
efficient and produce little heat. They consist of two or three small tubular
loops or several short glass sticks. Most of these bulbs cannot be used with dimmers.
The compact fluorescent bulb can last up to 10,000 hours, which is a long time.
LED - or light emitting diodes - are bulbs that do not have a filament. These bulbs consume very little power and have a long life span. They cannot produce as much light as an incandescent bulb or other bulbs.
A high intensity
discharge (HID) lamp produces a lot of light from a small bulb but requires ballasts
and starters. This light bulb type works by
striking an electrical arc across tungsten electrodes, which are housed in an
inner glass tube, which is filled with metals and gas. This gas helps turn the lamp's
light on and the metals produce the light.
A standard high pressure sodium lamp is a high intensity discharge lamp and has the best efficiency of all of the HID lamps but a yellow light is produced, which you may not like. However, high pressure sodium lamps that emit a whiter light can be found but some of the efficiency of the bulb is sacrificed when using this version. You may prefer a metal halide bulb which produces a more natural white color. HID bulbs are generally used when large areas, such as a parking lot, need to be lit.
Resources:
Megavolt.co.il: types of bulbs

