Fluorescent lamp

Can you ever imagine a world without light bulb? Before light bulb was created, the night can only be lit by the moon and stars. People working and traveling after sunset could only use candles or oil lamps, which caused many inconveniences. Without any bright light, moving inside your own house even seemed dangerous. However, things changed after the ambitious inventors brought their bright idea, which was to light the world, to life. The invention and the commercialization of light bulb not only

Abstract- Over the past few years, there has been a transition from traditional sources of light such as incandescent lamps, halogen lamps and fluorescent lamps to LED lamps. Even though this transition is slow and is not yet complete, the masses are gradually shifting from traditional light sources to LEDs because of the advantages LEDs hold over traditional light sources. LED lamps have better efficacy i.e. lumen output/input power and greater lifetime as compared to traditional light sources. They

current passed through it, but not burn in the process. (The History of the Light Bulb & Thomas A. Edison Papers) He studied earlier experiments and in 1878 announced that he had the technical problems solved and would create a practical incandescent lamp within six months. The invention of the light bulb changed the world in many ways, including facilitating the creation of large power grids, changing the social and economic structure of society and bringing other appliances into our homes. (Thomas

Erin Allbritton 4/19/17 BIO103 Professor Van Breukelen Chapter 10-Review Questions 1. What are some advantages and disadvantages of OIL and SOLAR energy sources? The advantages of oil and solar energy sources are how concentrated they are, availability, safety, and versatility. While the disadvantages are hazard potential, environmental damage, and cost. 2. What is per capita energy use and what is total energy use for a country and how do these differ? For a country

to easily recognize the objects. 4. You can quickly turn on and off Unlike the high intensity discharge lamps (HID) and fluorescent lamps such as metal halide, mercury vapor as well as sodium vapor lamps, it takes time to heat up once the switched in turned on. The LEDs usually come with full brightness instantly. 5. Instant restart Unlike the metal halide, sodium vapor and mercury vapor lamps, the LEDs do not have any problem when restarting immediately that maybe due to inadvertent turn off or

Phototherapy also known as light therapy involves the use of light to treat different diseases and disorders. The light can come from exposure to the sun or from lasers, light-emitting diodes (LEDs), fluorescent lights, and more. It has the ability to treat a wide range of diseases from skin conditions to eye problems to mood and sleep related disorders. Skin conditions that can be treated with light therapy include atopic dermatitis, vitiligo, and psoriasis while retinal conditions like diabetic

Your first instinct might be to flood the room with fluorescent lighting. Ignore this instinct. Fluorescent lights give off a pale white light, which in contrast to incandescent bulbs, can seem cold. They are associated with psychologically cold, sterile environments - hospitals, offices, schools - and cold linoleum and efficiency. While efficiency may be a reasonable work atmosphere, it's hardly cozy. In fact, some studies indicate that fluorescent lighting makes some people irritable. The ballasts

Introduction - Background - Photosynthesis is a series of steps used by plants to create energy. Solar energy is converted to carbohydrate sugars which are used for metabolism later on. A simple way of explaining this is that the sun 's energy is used to make chemical energy. Fig.1 (Royal Society of Chemistry, 2004) Question - Does the intensity of the light source affect the rate of photosynthesis? Hypothesis - If the wattage increases, the average time to float will decrease. Prediction - The

described ,all possible nonlinear loads . Among them few are Power converters such as Variable frequency drives, DC motor controllers, Cycloconverter, Cranes, Elevators ,Steel mills, Power supplies, UPS,Battery chargers, Inverters & ARC devices such as Fluorescent lighting, ARC furnaces, Welding machines. According to authors [2] ,[7] Even linear loads like power transformers can act nonlinear under saturation conditions. This occurs beyond the so-called saturation knee of the magnetizing curve of the transformer

The World Keeps Changing. I watched my dad, as he fixed the television. He removed the back of the TV, and pulled out a tray of glass tubes. I took a few steps back; and, peeked from around a corner. “Can you take out the scary movies?” I asked. My dad laughed; and tried to explain how the TV worked. I was five years old, three and a half feet tall, with two long ponytails, and big teeth: a curious child. I asked questions all the time. When my family tired of my questions, they sent me to play