LED Essay

Gas Lighting also has negatives like when Gas light was first invented it was expensive only The wealthy could afford oil lamps in their homes, but the poor had to use candles

The first pro that should be addressed is that the incandescent light bulb helped people to be able to do activities that they wouldn’t be able to do unless it was during the morning light. For example, for the rich people during that time, they were able to read, scrapbook and enjoy an evening without it having to be during the morning or afternoon ("The Impact of Light Bulbs on Society.”, Kalinowski). For the working class, the incandescent light bulb was both a con and a pro; the con was that they had to work for longer hours into the night because it wasn’t as dark and they could see everything more clearly. Yet it was also a pro as well because when they were able to see everything more clearly, it prevented them form losing limbs and occasionally their lives. Additionally, they could have more leisure time since they could spend a longer time during the night to do leisure activities ("THE MIDDLE CLASS IN THE LATE 19TH CENTURY.”, Lambert). Another pro that the incandescent light bulb led to was the industrial boom that it caused; since the working class could work for longer hours into the night, they were able to produce more products and goods than in previous circumstances, and therefore, the companies were able to sell and earn more ("The Impact of Light Bulbs on Society.”, Kalinowski). The incandescent light bulb also led to other inventions such as the camera, microwave, oven etc. And

When a beam of sunlight passes through a specially shaped glass object called a prism, the rays of different wavelengths are bent at different angles. The bending breaks up the sunlight into a beautiful band of colors. This band contains all the colors of the rainbow and is called the visible spectrum. At one end of the spectrum, the light appears as violet. It consists of the shortest wavelengths of light that we can see. Farther along the spectrum, the light has increasingly longer wavelengths. It appears as blue, green, yellow, orange, and red, each shading into its neighboring colors in the spectrum. The longest wavelengths of light that we can see appear deep red in color. Some descriptions of the spectrum also mention the color indigo, which is closely related to blue, between violet and blue.

This light is known as the spectrum emission color of an element which can also be used to identify an element as well as determine the energy that is given off. In this lab we used this information to identify three unknown substances and determine if the energy given off was high or low. In order to conduct this lab we had to take a known substance for example Copper Chloride (CuCl) and use a splint to put the substance over a bunsen burner. We then recorded the frequency, color of the flame, and the spectrum emission line by using spectroscopes, which diffracts light.

Getting a full day of work in used to be impossible without the light bulb because it is really hard to see in the dark without light. When the light bulb was invented, businesses started to produce more because the workers had longer hours, with more hours being available, more job opportunities opened up. Other machines that were used in factories like the sewing machine could not be used without the light bulb being there to light the factory. The light bulb also improved education in the

LED Bulbs: Finally, cut back on your winter energy bill by replacing your old fluorescent lights with LED bulbs for just $5.99 for a packet of two.

The light emitting diodes (LEDs) are low energy, lighting devices with a long lifespan and low energy consumption. The LEDs use specialized power

This type of lighting is already appreciated by the environmental crowd due to the fact that they use less electricity for a given amount of brightness emitted, and they last longer than older lighting technology. Another great benefit is that they emit less heat as well. If you're doing a remodel anyway, you may want to consider LED for any new light fixtures and putting LED bulbs in existing lights.

LED lighting should reduce energy costs by using at least 75 percent less energy than incandescent lighting. This will save on operating expenses. The maintenance costs

Light can be produced in many different ways, including incandescence, phosphorescence, and fluorescence (Gunderman 1). Incandescence is when heat makes an object release light, like the filament in a light bulb. Phosphorescence is when a material absorbs energy and then releases it slowly over time, like glow-in-the-dark toys. Fluorescence is when a material absorbs energy and releases it quickly as light (Gunderman 1). Fluorescence is the process used in glow sticks (Science Fair Projects 1). The fluorescent dye in this experiment’s glow sticks released yellow light. Different color glow sticks are made with different dyes (Harris 2).

The author erroneously assumed that the cost of LEDs is same as that of the incandescent lamps by just considering its initial cost. What if the maintenance cost of LEDs is more than that of an incandescent lamps? This would not only will make the author’s argument wrong but also will make it baseless .Also the author states that the LED bulbs are brighter than the incandescent lamps what if the bulbs consume more energy than the lamps. The lifetime of both the components is not compared which creates a loophole in this argument because if the LEDs last long then the cost will decrease if they don’t then the cost will increase.

Because the long life span of LED lights, the savings in maintenance to purchase, stock and change the conventional light bulbs and significant energy savings when it comes to replacement due to the long operational life times of LED lighting.

Heating and air conditioning systems perform 25% better than ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers) standard. (Anon., 2012)

CFL lightbulbs entered the market at an expensive price, yet the consumers continued to purchase them. Knowing the bulbs “paid for themselves,” the tradeoff was worth it. They used 75% less electricity than incandescent bulbs, lasted 10 times longer and emitted 450 pounds fewer greenhouse gasses. In previous years consumers relied on incandescent lights that were reliable and much less expensive than CFLs. CFLs were backed by utility companies that also wanted the product to be a success, which was obvious through their coupons, trade-ins and price promotions. Aside from the many benefits CFLs offered to consumers, market research showed there were misconceptions that caused hesitancy in consumer adoption. The original product had problems such as light flickering and buzzing, needed continual usage to result in energy savings, could not be used with a dimmer, and recycling the bulbs was not convenient as special measures were needed to dispose of the bulb.

In a modern building daylight can provide most of our lighting needs for the vast majority of the working day. It is therefore unnecessary to spend too much time in designing artificial lighting systems.