Solar energy, Science

Assignment Help:

Solar energy:

The energy we get today from the fossil fuels like coal, is in reality sun's energy,  trapped in them millions of years ago. Plants make their food and grow because they use solar energy for photosynthesis. Millions of years ago, huge forests got buried in the earth's crust and under great pressure and temperature,  they were converted into coal or oil. Hence coal and oil are  called fossil  fuels. Solar  energy is the great source  for production of vegetation which serves as food and fuel for us. However, nowadays, we have learnt to trap solar energy for various purposes. Solar energy can be used directly to give us hot water during winter, or run a refrigerator. It can be used for heating rooms in colder regions. It can also be used, with the help of a "photocell" to produce electricity for driving vehicles and illumination of streets. In a desert like Rajasthan, the earth's surface receives solar energy at the rate of 200 watts per square metre per hour. Since this is an unfailing source of energy, it would be a great advantage to develop cheap and efficient photocells or photovoltaic devices  to harness solar energy. A feature of using solar energy is  that it can be generated where needed. Solar cookers are being used  in many homes to cook food. Photocells are  also becoming common, though their efficiency has to be improved and their price brought down.  

2176_Solar energy.png


Related Discussions:- Solar energy

Data structure, how can work allocate and free algorithm in data structure

how can work allocate and free algorithm in data structure

Explain gametocyte colony stimulating factor, Explain Gametocyte colony sti...

Explain Gametocyte colony stimulating factor It is produced by monocytes, fibroblasts and endothelial cells due to the stimulation of 1L-1. It stimulates proliferation of proce

Explain the circumvallate papillae, Explain the Circumvallate papillae: ...

Explain the Circumvallate papillae: These are the largest of the papillae, about 8 to 12 in number. These are arranged in a V-shape.

Explain acute phase proteins, Explain Acute Phase Proteins Following an...

Explain Acute Phase Proteins Following any infection, there is a rise in concentration of several plasma proteins. The best known amongst them are C- reactive proteins (CRP) wh

A model illustrating how an eclipse appears, A model illustrating how an ec...

A model illustrating how an eclipse appears The sun is shown by an opal electric bulb shining by a circular hole 5 cm in diameter in a piece of blackened cardboard. The corona

Working memory index, Mr. X's Working Memory Index (WMI) is interpretable; ...

Mr. X's Working Memory Index (WMI) is interpretable; the components do not vary significantly, so his WMI score can be interpreted as a single construct. WMI includes three tasks.

Is it ethical to use placebo in clinical trial, Question 1 Is it ethical t...

Question 1 Is it ethical to use Placebo in Clinical trial? What is your opinion and what do CIOMS and ICH guidelines say in this regard? Question 2 What is the role of ethics

Experiment of sinking bodies, Sinking bodies Fill the overflow can with...

Sinking bodies Fill the overflow can with water to the level of the spout. Select a stone that will go inside the overflow can. Attach a string to the stone and weigh it with a

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd