No one knows who initially proposed the notion that agapito flores, a filipino electrician who lived and worked in the early 20th century, invented the first fluorescent lamp. We will use only 15 seconds of irradiation from a uv lamp to see the percentage kill as well as noting any observable genetic changes such as colony color change, colony. However, he realized that he did not have enough time to make the deadline its an project he plans to work on over a longer period of time. Ballasts require energy, and for some type of ballasts, efficiency is only achieved if the fluorescent lamp is left on for long periods of time without frequent onoff cycles.
Compact fluorescent lamps cfl electricity science fair project. Yes, compact fluorescent selfballasted lamps can be used in any portable lamp or luminaire in which they will physically fit. Lamp requirements a fluorescent lamp requires preheating of the filaments, a high ignition voltage to strike, current or power control for dimming, and additional filament heating during low dimming levels. Special dimming ballasts and dimming controls are required. When viewed under short wave uv the zinc sulfide in the silica plates fluoresces green, except where an eluted substance quenches this fluorescence these stand out as dark spots on the plate. I 3000k 82 f032830eco 2950 20000 philips 3000k 78 f32t8tl730alto 2850 20000.
Cool white is the cheapest and most common fluorescent lamp available on the market. Can a compact fluorescent selfballasted lamp be used in any portable lamp or luminaire that is listed for use with an incandescent lamp. If that powder were not there, would the lamp appear brighter, dimmer, or about the same overall brightness, but with an unpleasantly bright white line near its center. Prostart ballasts maximize the number of lamp starting cycles while maintaining energy efficiency. Electricity science fair project compact fluorescent lamps cfl projects by grade level. All you need to do is rub the fluorescent bulb with the plastic, fabric, fur, or balloon. The normal luminous viability of fluorescent lighting frameworks is 50 to100 lumens per watt, which is a few times the adequacy of incandescent lamps with equivalent light yield. Most cfls are designed to replace incandescent lamps and fit into most existing light fixtures. Using some simple physics and system considerations, the instantaneous light intensity function. Kremer general design the general design of a simple fluorescent lamp consists of a sealed glass tube. Aim your spectroscope at a fluorescent lamp and look through the grating. Discussion of the voltagecurrent characteristic of a fluorescent lamp.
An ordinary household fluorescent lamp is an example of an electricdischarge source. Snap switches, located in many convenient areas, make it easier for people in large, shared spaces to turn off lights in unused areas. A typical application involving a fluorescent lamp an auto switching light. The basic principles of the most commonly used lamp types. The quartz lamp used in this experiment is the same as a compact fluorescent lamp except that it has no phosphor. On a cold tube you would see it as a couple of pinhead sized dots if. The arc is sustained between two filaments by regulating. When luminescence occurs, the system loses energy and if the emission is to be. Apr 03, 2012 his first thought was to his science experiment on growing pineapple.
In spite of evidence that disproves the claim, the controversy has raged for years. How to design a dimming fluorescent electronic ballast. Measuring fluorescent lamp circuit and improving the circuit power factor 1. Fluorescent light bulb experiment that he wrote below. Second experiment compared the heat loss of a compact fluorescent lamp to this of a incandescent light bulb. How to handle fluorescent and highintensity discharge lamps each year, florida businesses discard millions of lamps containing small amounts of mercury. A fluorescent lamp, or fluorescent tube, is a lowpressure mercuryvapor gasdischarge lamp that uses fluorescence to produce visible light. Steve keller, university of missouri columbia chemistry department. Ultraviolet lamps, fluorescent dyes, color filters, pc spectrometer in this experiment you will use ultraviolet light to produce fluorescent light and you will study the relationship between the two. You will get brighter light in dry weather than in high humidity. The fluorescent lamp is a major advancement and a commercial success in smallscale lighting since the original tungsten incandescent bulb.
Mar 15, 2020 a fluorescent lamp has changed over electrical energy into useful light energy to a great deal more proficiently than incandescent lamps. To prepare wiring for a fluorescent tube light with switch control. An experiment would be helpful here, as the physical situation is very difficult for analysis. As much as 20 percent reduction in light emission can occur after 4000 hours of operation. The fluorescent lamp is a low pressure mercury discharge lamp. Lighting controls lighting controls are devices that turn lights on and off or dim them. The main type of fluorescent lamp used for plant growth is called cool white. The lamp automatically turns on around 6 pm and turns off in the morning. A typical fluorescent lamp consists of a glass tube coated with phosphor and containing a pair of electrodes at each end. If the sample is too weak, allow the spot to dry and reapply. All other forms of light emission are called luminescence. The ultraviolet light makes particles that coat the. Fluorescent lamps contain a small amount of mercury. Observations about fluorescents they often take a few moments to turn on.
Compact fluorescent lamps cfl electricity science fair. National institute for occupational safety and health abstract this experiment investigated the effects of different machine mounted area lighting technologies on. The basic principles of the most commonly used lamp types and the circuitry. A fluorescent light experiment in this experiment, we use the streamsmart 410 with a light sensor and the hp prime datastreamer app to measure the intensity of light from a fluorescent bulb. Lighting lighting controls lighting controls are devices that. Pdf recent development in lighting system enable the use of light emitting diode led as one of the lighting system instead of fluorescent. Fluorescent lamps are lamps in which light is produced as a result of flow of free electrons and ions inside a gas. The energy savings for existing fluorescent lighting can be increased by. Compact fluorescent lamps cfl a compact fluorescent lamp cfl, also known as a compact fluorescent light or energy saving light, is a type of fluorescent lamp. Led linear lamps and troffer lighting department of energy. This start enables us to encourage our students on a topic. You should see a spectrum or rainbow on the side not top of the box. Experiment electronic ballast electronic ballast for fluorescent lamps objective the objective of this experiment is to understand the role of ballast in fluorescent lighting systems and the advantages of fluorescent lamps driven by electronic ballast over the conventional incandescent lamps. A fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light.
No name of experiment page no 1 introduction of tools, electrical materials, symbols and devices etc. Pdf laboratory experiment of compact fluorescent and. Residential house wiring using fuse, switch, indicator, lamp and energy meter. Standard operating procedure for service and maintenance. Simply look in your classrooms and you will find that it is the major lamp used in lighting indoors, schools, office buildings, malls, stores, etc.
Jan 10, 2020 the fluorescent light needs to be perfectly dry, so you may wish to clean the bulb with a dry paper towel before starting. In growth chambers, the horizontal pattern of radiation distribution varies significantly across the chamber and at. Sep 02, 2016 this is the video only for study purpose about the connectins of tube light with description in english by anmol and amarnath. Lighting lighting controls lighting controls are devices. Each objective is calibrated to the housing in the objective. Compact fluorescent lamp compact fluorescent lamp a compact fluorescent lampcfl is a type of fluorescent lamp.
To control lamps by two separate switches house wiring. Following are the terms of the energy star partnership agreement as it pertains to the manufacture and labeling of energy star qualified products. Program requirements for compact fluorescent lamps cfls partner commitments. The writeup to this experiment consists of handing. The basic principles of the most commonly used lamp types and. Pdf laboratory experiment of compact fluorescent and compact. The tube contains a small bit of mercury and a gas usually argon kept under very low pressure. Experiment 31c biology with calculators 31c 1 photosynthesis and respiration plants make sugar, storing the energy of the sun into chemical energy, by the process of photosynthesis. Precut plastic backed or metal backed tlc plates, tlc capillaries, uv lamp aim the goal of your experiment is two fold. An electric current in the gas energizes mercury vapor which delivers ultraviolet radiation through discharge process and the ultraviolet radiation causes the phosphor coating of the lamp inner wall to radiate visible light. Fluorescent lamp reaction the sequence of burkholderia pseudomallei ttss1orf2 was obtained from genbank.
Wear gloves if picking up broken fluorescent lamp fragments. The image below shows a picture of a fullsize fluorescent lamp fixture. Fluorescence is the phenomenon in which absorption of light of a given wavelength by a. Rk primer of school lighting lamps and maintenance. In this experiment, the lamp was driven by a squarewave voltage source. A fluorescent lamp tube is coated with a white powder on its inside surface. If light from an incandescent lamp is directed onto the grating, a continuous spectrum of colors is formed. Experiment shows that except under unusual conditions the fluorescent light always has a longer wavelength than the primary light.
A fluorescent lamp circuit request pdf researchgate. Fluorescent lamp and working principle of fluorescent lamp. Linear led lamps cost more initially than fluorescent lamps, but energy and maintenance savings may mean that the lifecycle cost is lower. Note that all these links are external and we cannot provide support on the circuits or offer any guarantees to their accuracy. Evaluation of visual performance when using incandescent. Physics and technology discharged from franklins kite experiment robert mcgrath the ohio state university mcgrath. Standard operating procedure for service and maintenance staff fluorescent lamps and ballasts yale facilities operations and ehs revised june 12, 2014 background although highly energy efficient compared with traditional incandescent lighting systems, fluorescent lamps and ballasts can contain hazardous materials that require special handling. His first thought was to his science experiment on growing pineapple. When they require energy, they can tap the stored energy in sugar by a process called cellular respiration. Original article development and validation of a rapid and. This is the preferred mode of lamp starting for applications with occupancy sensors and several onoff cycles. Most can be dimmed but at a higher cost than dimming incandescent lamps. Experiment 4 spectroscopy atomic emission and the light from stars written by dr. A different technique involves the use of tlc plates that have a fluorescent material.
The fluorescent lamp circuit consists of a choke, a starter, a fluorescent tube and a frame. A fluorescent lamp generates light from collisions in a hot gas plasma of free accelerated electrons with atoms typically mercury in which electrons are bumped up to higher energy levels and then fall back while emitting at two uv emission lines 254 nm and 185 nm. When lamps are broken or placed in a landill or incinerator, the mercury can contaminate the air, surface water and ground water. This report details a series of lifecycle cost simulations that compared a twolamp troffer using led lamps 38 w total power draw or fluorescent lamps 51 w total power draw over a 10year study period. Life 4 32w fluorescent t8 ge 3000k 78 f32t8sp30eco 2850 20000 ge 3000k 86 f32t8spx30ew 2950 20000 o. The primers used in this study were developed by primer explorer version 4 online software. Purpose a study the relationship between voltage phaser and current phaser in sinusoidal steadystate ac circuit.
Lifetime of fluorescent lamps operating with electronic. This was one of the first facts to be learned about fluorescent light and was first put forward in the mid nineteenth century. Exp1 fluorescent lamp fluorescent lamp vacuum tube scribd. Laboratory experiment of compact fluorescent and compact led lamp for residential area conference paper pdf available december 20 with 2,610 reads how we measure reads. When they require energy, they can tap the stored energy in sugar by a process. The normal fluorescent lamp has a small amount of mercury in the tube. These bulbs are highly efficient compared to incandescent bulbs. Compared to other incandescent lamps cfls use less power to give same amount of visible light. The fluorescent light needs to be perfectly dry, so you may wish to clean the bulb with a dry paper towel before starting. In the lab experiment today, we want to find the effects of uv irradiation on two species of bacteria. To assess the purity of the colored organic compounds provided to you, using tlc. The energy star partner must adhere to the following partner commitments. Energy star program requirements for compact fluorescent. This report details a series of lifecycle cost simulations that compared a two lamp troffer using led lamps 38 w total power draw or fluorescent lamps 51 w total power draw over a 10year study period.
Fluorescent light bulb experiment home schooling in the. Rc phase shift circuit a assemble two parallel incandescent bulbs 220v, 15w and 4. On application of sufficiently high voltage across the lamp s terminals, a lowpressure mercury arc forms. Some circuits would be illegal to operate in most countries and others are dangerous to construct and should not be attempted by the inexperienced.
Document resume ed 027 711 ef 002 628 by allphin, willard primer of school lighting lamps and maintenance. In this laboratory, you will experiment with thin layer chromatography tlc, in which the stationary phase is coated on a plate of glass or plastic. Hortfacts 4004 light for plant growth in the classroom. Buy philips281535 fluorescent tube, sold only by the case of 30. To determine the identities of the analgesic components present in an unknown mixture by comparison with known analgesic samples using tlc. The grating produces an image of the light for each color emitted. Other controls include photocells, timers, occupancy sensors, and dimmers. Diagram of a fluorescent lamp procedure our starting point will be fluorescent tubes, commonly used in lighting and that probably illuminate the classroom. The length of the commonly used fluorescent tube is 100 cm. First experiment compared the light intensity of a fluorescent light lamp to this of an incandescent light lamp. The lamp tube, coated on the inside with fluorescent phosphors, contains a mixture of a rare gas and mercury vapour.
Switch board working of the fluorescent tube light. A fluorescent ring lamp works very well since it bathes the plant in light from. Some compounds fluoresce and are visualized under an ultraviolet uv lamp. To verify the rating of compact fluorescent lamp cfl. To understand how a dimming fluorescent lamp works, a simple resistive model for the lamp is used figure 1. Modelling of a fluorescent lamp plasma pure aanmelden. Evaluation of visual performance when using incandescent, fluorescent, and led machine lights in mesopic conditions m. An electric current in the gas excites mercury vapor, which produces shortwave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. For practical purposes in the case of the fluorescent lamp, the powders are mixed up into paints which are coated onto the inner surface of a glass tube.
This is further processed as the envelope of an electric discharge lamp in which ultraviolet radiation is generated. An introduction to fluorescence spectroscopy 5 luminescence and the nature of light a hot body that emits radiation solely because of its high temperature is said to exhibit incandescence. The fluorescent coating curves uv radiation into visible light. Statics and dynamics of fluorescent lamps operating at high frequency. Led lamp 12w2 21 ooolux 760w led lamp 14w2 800w led lamp 16w2 900w fluorescent lamp 40w2 900w fluorescent lamp 40w2 1500w two, total load of two sockets. They have longer rated life, but generally have o high purchase price. There is also the place for electronic design of an. Fluorescent light bulb experiment home schooling in the burbs.
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