What substance is fluorescent tubes?

What substance is fluorescent tubes?

A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.

What are the two substances in fluorescent lights?

A fluorescent lamp consists of a glass tube filled with a mixture of argon and mercury vapour. Metal electrodes at each end are coated with an alkaline earth oxide that gives off electrons easily. When current flows through the gas between the electrodes, the gas is ionized and emits ultraviolet radiation.

Why are fluorescent tubes hazardous?

Fluorescent lamp ballasts are also considered a part of this category. The danger with these bulbs is that they contain small amounts of mercury, a potent, developmental neurotoxin that can damage the brain, liver, kidneys and central nervous system, especially in infants and young children.

Where are fluorescent tubes used?

Fluorescent lamps are a lamp type that is commonly used to provide illumination for settings such as commercial lighting, industrial lighting, classroom lighting, and retail lighting. The sizes, light colors, and wattage of fluorescent tubes vary significantly.

Which one of the following is printed on a commonly used fluorescent tube light?

Notes: A fluorescent lamp or fluorescent tube is a gasdischarge lamp that uses electricity to excite mercury vapour. The excited mercury atoms produce shortwave ultraviolet light that then causes a phosphor to fluoresce, producing visible light. 6500 K is usually printed on a used fluorescent tubelight.

Which is the most commonly used substance in fluorescent tubes?

Mercury vapor and argon is the most commonly used substance in fluorescent tubes. Fluorescent tubes are a low pressure mercury vapor gas. Like this answer? Like 2 Dislike 1 ⚐ Report » Your answers will be displayed only after manual approval.

Which is the best type of fluorescent light bulb?

T8 Fluorescent Lighting The most commonly available is the T8 bulbs. This type of fluorescent tube lighting is the most popular because of its high CRi and many color temperature options. T8 lights are a good choice for an adjustable lighting system because of their color temperature range from a soft yellow-white to bright daylight.

What are the different sizes of fluorescent tubes?

There are 4 different fluorescent tube sizes; T4, T5, T8, and T12. The T stands for tubular and the numbers are an index for the diameter (in inches) of the tube light.

Why are T12 fluorescent tubes less energy efficient?

This is because they use older technology that is less energy-efficient compared to the smaller options. T12 fittings use a magnetic start ballast which is less energy efficient. The smaller and newer models have already been fitted with the more energy-efficient electric ballasts.