7683 Optoelectronics

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Lamps are a popular device used for lighting. This article will discuss two categories of lamps: incandescents and neons. It will provide an overview of the working principle of each type and cover areas in which they are commonly used.Incandescent lamps are generally the most widely used lights in the world. The design is simple, and consists of a closed glass bulb which is partially filled with an inert gas. The gas is usually argon, nitrogen, or krypton. An electric current is passed through a filament inside the bulb, which causes the filament to glow. This produces visible light. The amount of heat that is produced by the light is directly related to the amount of energy that is being supplied to the filament. The thicker the filament, the greater the amount of current required for the filament to reach the required temperature and emit light. The advantages of incandescent lamps are their low cost and their broad range of color temperatures. Additionally, their life span is relatively long; about 2,000-4,000 hours for standard lamps, compared to only 800-1,000 hours for fluorescent tubes. However, one of the major disadvantages of incandescent lights is that it is very inefficient. 90% of the energy used is converted to heat, and only 10% is converted into light. Incandescent lamps are widely used in various applications ranging from entertainment lighting to police flashlights. They are also used as indicators in control panels, flashlights, traffic signals, emergency lighting, digital clocks, kitchen applications, and home decor.Neon lamps are an interesting type of lamp; the glass tube is filled with a gas such as neon, xenon, or argon. When an electrical current is applied to the electrodes inside the tube, it excites the gas particles, which then emit light. The emitted light has a color which depends on the gas used; the classic neon sign uses neon gas, which produces an orange color. Typically, these lamps come in long, straight tubes, but they can also come in other shapes such as round and twisted tubes. Neon lamps are widely used in many different applications, such as outdoor and neon advertising signs, exit signs, interior decorative lighting, and indicators in control panels and displays. They have the advantage of being bright, energy efficient, and long-lasting, but they are also more expensive than incandescent lamps. In conclusion, incandescent and neon lamps are two commonly used lighting options. Both have advantages and disadvantages, and they are used in various applications such as advertising, illumination, and indicators. Incandescent lamps are inexpensive and have a broad range of color temperatures, but they are inefficient. Neon lamps are bright, energy efficient, and long lasting, but they are more expensive.

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