Fluorescent tubes are preferred to electric bulbs because electrical energy is almost converted into light in a tube. This means that fluorescent tubes are more energy-efficient compared to electric bulbs. Let's delve into the reasons why this is the case.

1. Conversion Efficiency:
Fluorescent tubes are designed to convert electrical energy into light more efficiently than electric bulbs. In a fluorescent tube, the electrical current passes through a gas-filled chamber containing mercury vapor. When the mercury vapor is excited by the electrical current, it emits ultraviolet (UV) radiation. The inner surface of the tube is coated with a phosphor material that absorbs the UV radiation and re-emits it as visible light. This conversion process is highly efficient, resulting in a significant reduction in energy wastage.

2. Larger Light Emitting Surface:
Another advantage of fluorescent tubes is that they have a larger light emitting surface compared to electric bulbs. Electric bulbs emit light from a small filament, whereas fluorescent tubes have a larger area covered with phosphor coating. This results in a more even distribution of light and a better overall illumination.

3. Voltage Fluctuations:
While it is true that voltage fluctuations can affect electric bulbs, the same can be said for fluorescent tubes as well. However, fluorescent tubes are often equipped with ballasts, which regulate the electrical current passing through the tube. These ballasts help stabilize the voltage and protect the tube from the adverse effects of voltage fluctuations. So, it would not be entirely accurate to say that voltage fluctuations do not affect fluorescent tubes, but they are better equipped to handle such fluctuations compared to electric bulbs.

To summarize, fluorescent tubes are preferred to electric bulbs because they have a larger light emitting surface and are more energy-efficient. The conversion of electrical energy into light is almost complete in fluorescent tubes, leading to less energy wastage. Additionally, fluorescent tubes can be equipped with ballasts to handle voltage fluctuations and ensure a more stable operation.

Why other tube does not have the phosphorus..