Thesis: Ever since the dawn of time, the sun has been a resource we cannotliveor do without, so its not such a shock that man has come up withtheidea of solar energy. Solar energy had many uses. Some can bedangerous and some, a very valuable asset to the modernworld. I. What is solar energy?A. Who was the first person to use solar energy?B.
When was it used?C. Where was solar energy first put to use?II. What are some of the uses of solar energy?A. Solar roof1. Who invented it?2.
When was it invented?3. What was it used for?4. How does it work?B. Solar cooker1.Order now
Who invented the first one?2. When was it invented?3. How does it work?4. What is it used for?C.
Solar oven1. Who developed it?2. When was it developed?3. What does it look like?4. How does it work?III.
What are some of the dangers of solar energy(used today or otherwise)A. Laser1. What is it?2. How does laser work?B. Ultra-Violet Rays (UV rays)1. Who discovered UV rays?2.
When was it discovered?3. In what way is it dangerous?4. How can we protect ourselves from this?IV. ConclusionA.
What are some uses of solar energy around our household?1. List some examplesC. Thoughts on Solar energy1. What we think of solar energy2. Poll resultsA Primitive Resource:Solar Energy and Its Many UsesEver since the dawn of time, the sun has been a resource we cannotliveor do without, so its not such a shock that man has come up with theidea of solar energy. Solar energy had many uses.
Some can be dangerousand some, a very valuable asset to the modern world. Solar energy is energy derived from the sun in a form of ultra-violetrays. Its was first applied to use in 212 B. C. , by the Greek geniusArchimedes. Solar energy was used to defend the habor of Syracuse againstthe Roman fleet.
Archimedes used a mirror or “burning mirror” as theyhad called it, to set fire to the ships of the Roman fleets while standing onshore (McDaniels 83). It wasnt until 1615 when Salomon de Cauxconstructed the first solar device; a solar engine. His device was made ofglass lenses, supporting frame, and an airtight metal vessel containingwater and air. This produced a small water fountain when the air heatedup 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 fallof the Roman Empire (Cheremisinoff 1).
Some other use of solar energy after that was the solar roof and thesolar oven. The solar roof was thought up by Harold Hay. In a solar roofsystem, water is contained in a clear plastic bag and it is placed on a blackmetal roof. Hay got the idea while traveling in India on a technical aidmission for the U. S government. While there, he noticed that many peoplewere living in rusty, sheet metal shacks, which were hot in the day and coldat night.
Hays plan was to remove the insulation from the roof on winterdays so that the roof would get hot, and Replacing the insulation at night toallow the shack to be warm through the night. Then in the summer, hewould so the reverse of what he did in winter to let the house cool at nightand replacing the insulation in the daytime to block out the heat. Then overthe years, Hay and a man named John Yellott constructed a 3- by3. 7-m building using water basins as the actual roofing material. Duringthe summer, a slab of foam insulation was rolled back at night, and thewater would become cold through the night sky evaporation.
Since thewater supply sat directly on a metal ceiling, it absorbed the heat from theroom and kept the building air-conditioned all day. During the winter, themovable insulation was rolled back in the daytime which allowed for it tocollect heat. This generated enough heat into the house through the ceilingat night to keep the room comfortable (McDaniels 179-181). Then there was the solar cooker. Developed by Augustin Mouchot inFrance and by John Ericsson in the United States in the nineteenth century.They wanted to develop a solar cooker that not only reached hightemperatures, but also was to be used as a means of heat storage .