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Solar Energy Essay

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Thesis: Ever since the dawn of time, the sun has been a resource we cannot

or do without, so its not such a shock that man has come up with

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idea of solar energy.

Solar energy had many uses. Some can be

dangerous and some, a very valuable asset to the modern

A. Who was the first person to use solar energy?

C.Where was solar energy first put to use?

II.What are some of the uses of solar energy?

1.Who invented the first one?

III.What are some of the dangers of solar energy(used today or otherwise)

B.Ultra-Violet Rays (UV rays)

3.In what way is it dangerous?

4.How can we protect ourselves from this?


A.What are some uses of solar energy around our household?

1.What we think of solar energy

Ever since the dawn of time, the sun has been a resource we cannot

or do without, so its not such a shock that man has come up with the

idea of solar energy. Solar energy had many uses. Some can be dangerous

and some, a very valuable asset to the modern world.

Solar energy is energy derived from the sun in a form of ultra-violet

rays. Its was first applied to use in 212 B.C., by the Greek genius

Archimedes. Solar energy was used to defend the habor of Syracuse against

the Roman fleet. Archimedes used a mirror or “burning mirror” as they

had called it, to set fire to the ships of the Roman fleets while standing on

shore (McDaniels 83). It wasn’t until 1615 when Salomon de Caux

constructed the first solar device; a solar engine. His device was made of

glass lenses, supporting frame, and an airtight metal vessel containing

water and air. This produced a small water fountain when the air heated

up during operation. This was considered to be more of a toy than a device,

but it was the first published account of the use of solar energy since the fall

of the Roman Empire (Cheremisinoff 1).

Some other use of solar energy after that was the solar roof and the

solar oven. The solar roof was thought up by Harold Hay. In a solar roof

system, water is contained in a clear plastic bag and it is placed on a black

metal roof. Hay got the idea while traveling in India on a technical aid

mission for the U.S government. While there, he noticed that many people

were living in rusty, sheet metal shacks, which were hot in the day and cold

at night. Hay’s plan was to remove the insulation from the roof on winter

days so that the roof would get hot, and Replacing the insulation at night to

allow the shack to be warm through the night. Then in the summer, he

would so the reverse of what he did in winter to let the house cool at night

and replacing the insulation in the daytime to block out the heat. Then over

the years, Hay and a man named John Yellott constructed a 3- by

3.7-m building using water basins as the actual roofing material. During

the summer, a slab of foam insulation was rolled back at night, and the

water would become cold through the night sky evaporation. Since the

water supply sat directly on a metal ceiling, it absorbed the heat from the

room and kept the building air-conditioned all day. During the winter, the

movable insulation was rolled back in the daytime which allowed for it to

collect heat. This generated enough heat into the house through the ceiling

at night to keep the room comfortable (McDaniels 179-181).

Then there was the solar cooker. Developed by Augustin Mouchot in

France and by John Ericsson in the United States in the nineteenth century.

They wanted to develop a solar cooker that not only reached high

temperatures, but also was to be used as a means of heat storage enabling

food to be cooked after sundown. Mouchot built a solar steam engine that

operated a printing press in Paris in 1882. In the United States, John

Ericsson invented what he called the “Ericsson-cycle” which was a hot-air

engine for the making of solar heat. The sun’s rays would be concentrated

with the use of a parabolic reflector, which was designed to track the sun

across the sky in order to keep a constant power output.

There was also the solar oven. In 1837, and astronomer from

England named John Fredrick Herschel introduced to the world a solar

oven. He built a small solar oven while on a trip to Africa’s Cape of Good

Hope. He constructed it as a mahogany, painted it black and buried it in

the sand for purposes of insulation. a doubled-glazed cover, which was the

only portion of the oven left exposed, serve to limit heat losses through the

top, while at the same time, letting in sunlight. The maximum temperature

of the oven was of about 240 degree F and it was used throughout his

expedition by him and his staff to cook both meat and vegetables (Regino 5).

Not all solar energy inventions and discoveries were good. Some

solar energy is dangerous. One for example would be lasers. Laser, an

electromagnetic wave that is made up of excited atoms. It produces

coherent light. This means that the light produced is orderly, with all the

excited atoms making up the laser beam that is emitting their flashes in

unison. The laser often consist of polished ruby rod that has a solid mirror

at one end, and a high voltage flash tube wound around the rod. The flash

tube acts as the power source for the laser beam and the energy that is

emitted as pulse is visible light (Holsroemn 12-14).

Another dangerous solar energy is Ultra-violet rays. Ultra-violet rays

is also referred to as UV rays for short. They are energy rays that is given

off from the sun. UV rays were first discovered by astronomers in the

1960’s. It can be dangerous because too much rays can cause you to sun

burn, tan, damages your hair, and at the worst; skin cancer. You can get

skin cancer if your are not careful about how to spend and protect yourself

from the sun. One way to protect yourself is by applying sun tan lotion to

your skin every time that you plan on spending a lot of time in the sun,

especially if you are going to the beach. To be on the safe side for sure, you

should apply it everytime you are in the sun. (Rose 123-125).

There is basically a lot of solar powered inventions in our society

today. Like in our household, there are many solar equipment. There is

the solar heating, solar satellite, solar water heating, solar cooling, solar

radio, solar battery, etc. As you can see, there are so many solar items in

the world so solar is an important source. (Holstroemn 182).

We believe that solar energy is worth it. It is a good thing that our

planet has so many ways of generating energy. We have electricity, solar

power, nuclear power, propane, so many! We think that out of all the

choice of energy, we prefer solar. Why you ask, because think of what will

other source of energy. The sun is always here for us. Solar energy is the

only energy source that can not be controlled. We could lose all of our

electricity and still live because we can live off of solar power. You don’t

need electricity or gas to power your stove because when there is a storm,

the power can be knocked out and you wouldn’t have to worry if you have

furniture that were powered by solar. Every other power source can be

destroyed but the greatest power of all is the sun. This is one power source

that can always be depended on. The best part about solar energy is that it

In a poll that we had conducted around our neighborhood, we found

that only five percent of the people on our street have solar powered

products. This is very surprising to me. We had expected the average to be

somewhat higher. Mrs. Richard is one of the person who we asked that had

solar products such as: solar battery and solar heating. She believes that

everyone should at least give solar products a try because you can always

depend on it when you need it. Other people like Mr. Pham said that there

is no use to solar power because when the sky is cloudy, there is no sun to

power any of the solar product. He prefers to stick to electricity. People

have different ways of looking at solar energy so its up to them if they want

sun energy or electricity. Who knows, maybe one day, everyone will agree

on using solar energy. As for us, we still prefer solar over electricity any

Cheremisinoff, Pual N. Principles & Applications Of Solar Energy. Ann

Arbor Science Publishers: Michigan, 1979.

Holstroemn, Isaac R. Energy From The Sun. Tab Books, Inc:

McDaniels, David K. The Sun. John Wiley & Sons, Inc: Canada, 1984.

McPhillips, Martin. The Solar Energy. Everest House: New Yrok, 1983.

Regino, Thomas C. Solar Energy. St. Martin’s Press, Inc: New Yrok, 1986.

Rose, Harvey. Solar Energy Now. Ann Arbor Science Publishers:1982.


Cite this Solar Energy Essay

Solar Energy Essay. (2018, Jun 28). Retrieved from https://graduateway.com/solar-energy-essay/

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