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

Electronics, what is meant by three phase signal..

what is meant by three phase signal..

Explain the process of respiration, Explain the Process of Respiration ...

Explain the Process of Respiration Respiration is the process which deals with the act of respiring or breathing, the act of taking in and giving out air, the aggregate of thos

A compound plane faces that can be seen with the unaided eye, A solid compo...

A solid compound whose internal structural pattern is expressed as plane faces that can be seen with the unaided eye is generally called as a: Crystal

Crop for local and distance markets, Q. When are conditions right for harve...

Q. When are conditions right for harvesting a crop for local and distance markets? The conditions right for harvesting a crop for local markets: harvest in the early morning t

.volcanism, what the different types of volcanoes are?

what the different types of volcanoes are?

Define hyposecretion of insulin, Define Hyposecretion of Insulin You ma...

Define Hyposecretion of Insulin You may already be aware that an insufficiency of insulin in the body leads to the development of diabetes mellitus. It is caused by the degener

Neurological system, There are many different venomous animals in the world...

There are many different venomous animals in the world.The venom produced by one animal can be very different that the venom produced by another animal. There are some animal venom

Verification of stock register , VERIFICATION OF STOCK REGISTER : A stock ...

VERIFICATION OF STOCK REGISTER : A stock register is an important component of any official establishment in which records related to purchase, use and maintenance of all the item

Explain the mechanism of blood coagulation, Question 1. Explain the mec...

Question 1. Explain the mechanism of blood coagulation 2. Which are the different tests done for investigation of a bleeding disorder? Explain any two tests 3. Explain th

Biochemistry, Ask quTo optimise your kinase assay you require a range of su...

Ask quTo optimise your kinase assay you require a range of substrate concentrations in the assay starting from 10 µM down to 10 nM substrate in 50 µL total assay volume (use 1:10 d

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