Making a Night Light
explanatory Essay
602 words
Making a Night Light A nightlight provides light at the change of the light- mostly at night. The definition of light night is so that night passers will be able to see more clearly, drivers will be able to drive safely and accidents will be avoided. Nightlight requires LDR (Light Dependent Resistor). The resistor changes its resistance depending on the amount of light it receives. LDR is also used to monitor light intensity level. A resistor, which reduces the flow of current in circuit, is also needed. 555 microprocessor the brain is also needed to control the flow of energy from the power supply to the components. Battery will be used to supply voltage for the circuit. We detect a light level using a LDR. The LDR then send signal to the LED providing us with the output of light. AIM === The aim of this investigation is to make a nightlight. The light will be produce using an LED (Light Emitting Diode), which will provide small bright light. [IMAGE]LED Diode provides small bright light, and is mostly used in computer, TVs, remote controls, mobile phones, and on many more electrical appliances. [IMAGE]LDR Can be used to monitor light intensity level. It changes its resistance depending on the amount of light. [IMAGE]555 microprocessor Looks like spider with its eight legs. It is a small chip, which controls the flow of energy within the circuit- it acts like the brain of the circuit as everything as to be connected to it. [IMAGE]RESISTOR This reduces the flow of current in the circuit. Duracell Ultra Alkaline 9V Batteries, 2 Pack BATTERY 9v battery will be needed to supply voltage to the circuit. We tested the nightlight by covering up the LDR with a finger; this makes the light brighten up. However when I removed the finger from the LDR the LED went off. When there is no light the LED comes on, however when there is light getting into the LDR the LED goes off.
In this essay, the author
- Explains that they detect light levels using a ldr, which sends signal to the light level.
- Explains that the ldr led went off and when there is no light, the led comes on.
- Explains that they switch off when they take their finger of the ldr.
- Narrates how they missed a cable and took notice of it and repeated it.
- Explains that they had covered the ldr with their finger, then removed it to see it.
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- Lighting Advancementsexplanatory essayHave you wondered why streetlights are yellow, or why the year 2000 cars have brighter headlights and they are a different color? Have you ever wondered how the indiglo light on your watch works, or why it glows green and not white? And did you know that same indiglo light can be used while frozen, dipped in water, bent in half, stepped on, or in hazardous environments. Lighting has changed over the last few years; there are advantages and disadvantages of different kinds of lighting.
In this essay, the author
- Explains that the oil lamp was the primary fuel for the fire, it burned even longer than a candle, and was cleaner.
- Explains that fiber optics is used to create unique displays of light. they can change colors from white to a brilliant purple to dark blue all in the matter of seconds.
- Explains the advantages and disadvantages of different kinds of lighting.
- Explains edison's invention of the electric light, which was a safer, non-fire based source of light.
- Explains that electro-luminescent lighting is one of the largest advances in lighting.
2263 wordsRead More - Led Light Research Paperexplanatory essayIf you've got an existing office space you could be saving money and doing your bit for the environment by switching to LED lights. These days to run a successful and well-respected business, it's important to think about the impact your practice has on the environment as well as providing a good service for your clients. Whatever type of lighting system you have, it's simple and straightforward to retrofit LED's and give your business premises the advantage of cheaper energy costs and improve your carbon footprint at the same time.
In this essay, the author
- Explains that if you've got an existing office space you could be saving money and doing your bit for the environment by switching to led lights.
- Explains that incandescent bulbs use harmful substances such as phosphors and mercury in their manufacture, which means when they get thrown away they can be harmful to the environment. led's last for 50,000 hours, compared to normal bulbs which last just 1000.
- Explains that led lights don't produce infra-red heat or uv rays and the light they produce has a natural effect that shows the actual colour of the object being illuminated.
- Explains that it's possible to use pre-existing controls, power circuits and light fixtures to install led lights, which means you won't have to spend money rewiring or creating waste ripping out walls and ceilings.
- Explains that led bulbs last longer than incandescent bulbs, so there's less need to manufacture bulbs and less bulbs end up in landfill. reducing your carbon footprint is all about how much waste you produce.
- Explains that led lights can be easily upgraded without creating more waste. lee mciver invites you to save a little money and do your bit for the environment by replacing all of your traditional light bulbs with energy-saving led bulbs.
487 wordsRead More - Smart Camerasopinion essayThe first step is to transform the signal from analog to digital, if the camera itself is not digital already. The data is then processed and based on the results certain actions are taken. The processing occurs in the camera itself, if required hardware for this is built in, or the data is sent to a computer.
In this essay, the author
- Explains the technology behind smart cameras, which analyzes what it sees, and makes certain decisions based on the results of the analysis.
- Explains how the camera transforms the signal from analog to digital, and based on the results, certain actions are taken. applications range from security systems for crime prevention and investigation to commercial and private use.
- Explains that computerized facial recognition is an old idea conceived decades ago, but the use of it has accelerated since the 1990s due to cheaper technology and considerable research achievements in this area.
- Explains that the unique features of a person's face can be encoded into computer files and compared to previously captured faces that have been stored in databases.
- Explains that smart cameras can be used where conventional cctv cameras are used today, and in a number of additional cases.
- Explains the advantages of smart cameras over conventional cctv cameras, such as facial recognition and an adequate database.
- Explains customer identification for commercial use, and other applications, such as smart door openers and nurse sensors.
- Explains that smart cameras can be used for various reasons, but there are ethical issues to focus on: the technology itself is not perfect, so there is a risk for errors.
- Opines that facial recognition programs can recognize two pictures belonging to the same person even if there are differences in the pictures. software development has come a long way since its inception.
- Explains that facial recognition can be used to identify criminals, but there is a risk that innocent people are mistakenly identified as crimes, and thus subject of investigation by the police.
- Opines that people need privacy to hide things that are illegal or immoral. in a perfect society, everyone would be tolerant and nobody would hide.
- Opines that privacy is desired regarding everyday activities, such as a girl who has been raped, and someone with aids.
- Opines that smart cameras can be used for ethically questionable purposes, and that privacy rights will be disregarded in a future where people are constantly being monitored.
- Explains that with smart cameras, surveillance is primarily performed by computers, not humans, and privacy is jeopardized when information from the computer becomes available to other people.
- Opines that advertising is a necessity for companies to make people buy their products, since without it, some people would not even know that they need these products.
- Explains that sometimes it is not desirable for the customer that the company knows too much about him. a person who has problems with gambling may not want to receive commercials about cheap flight tickets to las vegas.
- Explains that facial recognition requires the least amount of cooperation from the individual. if used without the consent of the customers, the technology could jeopardize parts of our privacy.
- Explains that the us supreme court has established that what a person is knowingly exposing to the public is not subject to article [iv].
- Opines that surveillance can be good as it prevents crimes, and bad because it conflicts with our privacy.
- Opines that technology has the potential for bad along with the good. a total banning of smart cameras is not a viable option today, but with adequate regulations some of the worst consequences could be reduced.
- Explains the ethical issues that smart cameras bring about are not new. surveillance per se has been an issue probably since the first societies were formed.
- Explains that smart cameras can analyze and store information automatically, whereas cctv cameras are controlled by humans, connected to monitors and video tape recorders, but not computers.
- Suggests regulating surveillance and the use of databases to solve smart cameras' problems. all surveillance cameras could go through an independent body, which would also control the government.
- Argues that a sign that informs the public herever video surveillance is used could be mandatory, so that secret cameras would be prohibited. regulations should deal with commercial use and government use.
- Argues that data can be stored in databases without harming people's integrity. information about political opinions, religious and philosophical beliefs is typically considered private, but there should also be restrictions to secure that only registration that is considered justified is performed.
- Opines that smart cameras, as with all forms of surveillance, can be used to lower the crime rate in an area to some degree.
- Opines that even with adequate laws to ensure our privacy, there are still other problems that are harder to solve. this technology is being developed mostly in countries with open societies with civil liberties ensured.
- Opines that smart cameras should be regulated to reduce negative consequences, since they can be used for many good purposes.
- Cites richard spinello's "cyberethics: morality and law in cyberspace" and ian barbour.
- Cites http://www.eff.org/censorship/terrorism_militias/fisa_faq.html, and https://amsterdam.nettime
3029 wordsRead More - Friday Night Light Analysisopinion essayH.G Bissinger addresses many social and political issues in his book “Friday Night Lights”. Even today, decades later, these issues are still very prominent in our society. Much like the situation described in Odessa during the 80’s, football is a huge part of the society in America currently, and most likely will be for the years to come. Along with football, there are many underlying controversies that take place. Proper education is something that is often overlooked when it deals with athletes.
In this essay, the author
- Opines that although bissinger's writings are important, these are the two that stick.
- Opines that football is a huge part of america's society today, and most likely will be for the years to come.
- Argues that it's more common for kids to cheat in order to get their homework done than to actually put in effort and work.
- Explains that racism has been part of our country for as long as america was around, although the signs were hidden under different masks. from slavery during the antebellum era to the segregation of black and whites, it's all unjust persecution
- Analyzes how bessinger portrayed odessa's values as old-fashioned and segregated, citing jim moore, the president of ector high school before it was shut down.
- Opines that you have to be educated on issues in order to help fix them. don't let entertaining or watching football blind you on problems.
724 wordsRead More - Overhead Patient Lightexplanatory essayIntroduction This paper will discuss the inconsistency of dental office overhead patient lights. The Facility Property Manager (FPM) will face the challenge of getting all the lights to work the same why constantly throughout the day. The patient’s lights in many of the dental rooms no longer turn off and on with the wave of a hand, they are very loose and drift after being be in a certain position while working on patient, and the off/on switch often loosen with continuous use. The FPM has sent several service technicians over to work on this issue to no avail.
In this essay, the author
- Explains the inconsistency of dental office overhead patient lights. the facility property manager (fpm) faces the challenge of getting all the lights to work the same why constantly throughout the day.
- Explains that the fpm of the facility had to come up with a strategy on what the best outcome would be for fixing the lights.
- Explains that the fpm had to understand how the lights were being used. the manager of the dental center explained how often they get used, and the number of people that use them is 34.
- Explains that having service technicians come out after hours was not the answer to the problem. the fpm would have to consider the extra cost and whether the lights would be working the correct way.
- Explains the fpm's decision to replace the old lights with newer low maintenance patient lights.
- Explains that the fpm performed a cost-benefit analysis and realized that replacing the lights would be the best way to solve the issues.
- Explains that analyzing and benchmarking similar facilities proved to be beneficial and paid of financially for the dental center. this allowed the fpm to make the decision to replace the 15-year-old lights with new technology.
- Explains campbell, j. l., and design publishing group's facility and property management guidebook.
602 wordsRead More - Horrof Fiction: From the Greeks to the Vikingsexplanatory essay...n, and with the use of sensitives and mediums whom are more in tune and able to detect them slightly better than the average person.
In this essay, the author
- Explains that horror fiction is designed to create an eerie and frightening atmosphere which can be either supernatural or non-supernatural.
- Explains that horror stories are told to entertain us by the campfire at night, and often to protect us from danger. they have a functional purpose.
- Questions whether the monsters we've been told about for centuries are still real or are they ever real. we are constantly discovering things in this world that we don't fully understand.
- Explains that the greek word "demon" comes from greek mythology for an inferior deity or an attendant spirit also known as a "genius."
- Explains that in some islamic beliefs, the djinn is a class of spirits lower than the angels and are capable of appearing in human or animal forms and influencing humankind.
- Explains that in islamic teaching the jinn are creatures with freewill made from smokeless fire by allah (god) as humans were made of clay (adam).
- Explains that djinn are often mentioned in the qur'an and are similar to humans in that they have freewill allowing them to do as they choose, even follow any religion or none.
- Explains that hidden beings come in a variety of themes and names depending on which culture they are told from. they are also known to the old norse as vttir or wights, which are nature spirits.
- Explains that the bible forbids the worship of house spirits or household deities, which implies that they exist by modern religious standards, no matter what they are called.
- Explains that the words "demon", "daemon" and "generic" mean the same thing, non-human unseen spirit-type beings. ghost hunters record evidence of them using cameras, video, electronic voice phenomena, and sensitive mediums
- Explains that skeptics can't explain certain phenomena and try to come up with scientific explanations that later convert them to being believers when they see things they wish they'd never seen.
- Explains that they categorized this story as a "horror fiction," but it isn't. the story is based on true events, the names and locations have been changed to respect the privacy of those involved.
1097 wordsRead More - The Physics of Light Propulsionexplanatory essayThe laser pointer which many people now carry around on key chains was not thought as such a trivial toy or gadget ten years ago. The laser technology itself is a very complicated endeavor. The simple circuitry has evolved from years of work to make the theory behind the amplification of light possible.
In this essay, the author
- Explains that the physics of light propulsion is a reality that is made possible by the physics which controls everything in our everyday lives.
- Explains that the light source is a precision high-powered laser beam, and the large, highly polished parabolic mirror is designed to capture the beam.
- Explains that the laser pointer which many people now carry around on key chains was not thought as a trivial toy or gadget ten years ago. the simple circuitry has evolved from years of work to make the theory behind the
- Explains that light amplification by the stimulated emission of radiation or laser is best understood by beginning at the atomic level where the basis of an atom and its energy levels can be identified.
- Explains that electrons are limited to a series of fixed values, this is an example of quantization1. the law of conservation of energy applies in that an electron may fall to lower shells, but in doing so it must give up an energy equal to the difference between the two levels.
- Explains that light is quantized and can be represented as groups of photons. the amount of energy in a quantum depends on the wavelength of the light or the frequency.
- Explains that wavelength is linked directly to the energy of a photon. the individual colors seen are determined by the wavelength that reaches the eye.
- Explains that the process above is created due to spontaneous emission. photons of the same energy as the energy in the upper level may use their energy to move a lower electron up to higher level.
- Explains that stimulated emission is the process which in most important for the operation of a laser.
- Explains that population inversion can occur in a three-level system by means of pump and light source which excited the photons to the third level.
- Explains the idea behind the needed population inversion within the rules for stimulated emission. imagine being able to reflect these photons back through the atoms.
- Explains that high-powered lasers are used in engineering, but they are not yet powerful enough to transport light propelled craft.
- Explains that the light propulsion system is a cone-shaped craft with parabolic mirror at the rear, which receives the beam from the laser and focuses it.
- Concludes that the physics behind light propulsion system lies directly with the light source. the emphasis is placed on the laser, due to the need for the further growth of the technology.
1293 wordsRead More - Night Vision Case Studyexplanatory essayNight vision passes light through a vacuum tube based device that converts the non-visible light to visible light through several other mechanisms like photocathode
In this essay, the author
- Explains that they thought long and hard about the types of vision and colour of eyes they wanted. they chose a blood-red iris and yellow starry rings for this task.
- Narrates how they initially turned to night vision, initially this sounds nice, but after some thought on the basic principles, they decided against it for several reasons.
- Explains that night vision passes light through a vacuum tube based device that converts the non-visible light to visible light via several mechanisms like photocathode plates.
- Explains that it amplifies all light, including daylight, which would make use during the day a problem, or any other form of sudden illumination would cause issues with vision.
- Opines that they would not be able to see the usual spectrum of colour; they like the ability to differentiate colours.
- Explains that thermal vision, also known as forward-looking infrared, provides imaging using a sensor that is capable of detecting the difference between foreground and background objects.
- Opines that they like this type of vision for its ability to be usable day or night and at relatively long distances.
- Opines that while extremely useful, it has its downsides such as not being able to visualise colours as normal humans do. replicating with organic tissue could yield similar results but may not be as clear as images produced with electronics.
- Explains that x-ray vision is a popular sci-fi classic. it requires wavelengths of 0.01 to 10 nanometres and can disrupt molecular bonds and ionize atoms.
- Explains that x-ray vision is a little different from the previous, since it detects the nearby waves in the air, the radio wave from cell phones, wi-fi, and the rest of the residual waves from similar devices.
- Explains that the mantis shrimp has 12 different photoreceptors compared to a humans 3, which makes colours processing faster and less "power hungry" on the brain.
942 wordsRead More - Light Experimentcomparative essayIn 1801 a man by the name of Thomas Young made a striking discovery on the behavior of light. Young devised an experiment that determined the characteristics of light. In this experiment, a coherent light source illuminates a plate, pierced by two parallel slits, and the light passing through the slits is observed on a screen behind the plate. It was thought that with two slits cut into the plate would cause it to illuminate two slits on the observing plate behind. Because at that time it was thought that light acted like a particle. It would be just like spraying water from a hose onto the double slit, which would cause some of the water to create a pattern identical to the two slits. But Young’s double slit experiment changed what we thought we knew about light. It was proven through Young’s experiment that light did not act as a particle, but as a wave. But why is that such a big deal? What difference does it make if light acts as a particle or a wave?
In this essay, the author
- Explains how thomas young's double slit experiment changed what we thought we knew about light.
- Describes how young devised an experiment to measure the wavelength of light, using a paper card to break the single pinhole beam into two beams.
- Explains how light waves interfered with each other, which is analogous to dropping two stones in a perfectly calm lake.
- Explains how the double slit experiment was repeated, but individual quanta of light were fired through the nitrates, forming the same interference pattern that young saw.
- Concludes that light behaves as a wave, after it was discovered by thomas young in 1801. light passes through both slits simultaneously, which is necessary for the appearance of an interference pattern.
731 wordsRead More - Strategic Electric Lampscomparative essayIn today's post we're not discussing simply any old spotlight. We're discussing strategic electric lamps. What makes an electric lamp strategic? A strategic spotlight is essentially an electric lamp that is been intended for strategic (i.e. military or police) utilization. Numerous strategic electric lamps are intended to be mounted to a weapon for low-light shooting. They're normally littler than conventional spotlights, radiate substantially more light, and are made of weapon-review aluminum for greatest sturdiness. While strategic electric lamps are planned fundamentally for military and police units, as we'll see beneath, they're likewise a truly convenient regular and individual barrier device for the normal regular person.
In this essay, the author
- Explains that a strategic spotlight is essentially an electric lamp intended for strategic (i.e. military or police) utilization. they're littler than conventional spotlights, radiate substantially more light, and are made of weapon-review aluminum for greatest sturdiness.
- Opines that a strategic electric lamp is one of the most convenient and adaptable devices one can have in his every day carry pack.
- Narrates how they've been in situations where a spotlight might have been helpful, yet they were left staggering oblivious.
- Explains that electrical force can go out at any time and for long periods, and having an electric lamp on can spare time.
- Explains that a spotlight can also be utilized as an adequate self-protection device. an electric lamp, when utilized right, could be exceptionally helpful in intense circumstances.
- Explains the two vital self-protection capacities that a strategic electric lamp serves, in addition to one reward utilization. assailants utilize the spread of dimness as leeway.
- Explains that splendid light perplexes assaulters, and exploits that common response to safeguard yourself against might be assailants.
- Recommends gleaming an electric lamp directly in the attacker's eyes, or commanding their face. the attacker will experience three to four seconds of bewilderment and semi-difficulty seeing, giving them enough opportunity to escape or assault.
- Explains that some strategic spotlights have a serrated or toothed bezel, which is used to break auto windows in crisis.
- Explains that while the bezel on a strategic spotlight isn't set to break windows, it could be utilized as an extemporized striking apparatus.
- Advises to be cautious with the toothed bezeled spotlights when flying. mike had one taken away by a tsa executor on the grounds that it was regarded as "striking apparatus."
727 wordsRead More