THE SUN PROVIDES THE SOLAR ENERGY WHICH IS THE PRIMARY SOURCE OF ALL ENERGIES BE IT ELECTRICAL, MECHANICAL, CHEMICAL OR NUCLEAR. SINCE WITHOUT SUN THERE WILL BE NO LIVING CREATURES AND THERE WILL BE NO OTHER ENERGY.
Solar energy comes from the sun, but this energy can be transformed into a source of power with the aid of solar panels, also called photovoltaic panels.
Energy is "the ability to do work."
For everyone and everything, that means being able to grow and move. For babies, it means eating healthy food to develop, and for plants it means converting sunlight and water into energy to grow. Food is stored energy. When you eat it, your body uses it to do all kinds of work from running and jumping to thinking.
Solar energy is the renewable energy we get from the sun. When the sun's rays are transformed into electricity, it is called photovoltaic (PV) energy. This is a simple and earth-friendly way to get electricity. PV panels can be put on the roof of a house to provide electricity or can be used in remote places where there is not electricity from other sources.
A common example of PV electricity is the calculator. Nearly all calculators made today have a small PV panel that converts light into electricity to power the device. The next time you use your calculator, notice what happens when you cover the small panel with your hand. The calculator stops working. That is because it needs light to make electricity.
When the sun shines on an object like a rock or your skin, what happens? That object gets warm, right? Well, this concept can be used to heat water and buildings so that less other energy needs to be used. If buildings are designed with large windows that allow the sun's rays to heat surfaces inside the building, then it costs less to heat the building because the sun's energy is free and renewable. This type of building is called "passive solar" because it is not an active, mechanical system that heats the inside, but instead uses the natural heat from the sun's rays to heat the building.
After the 1973 oil embargo, there was a resurgence of interest in solar energy. Faced with a possibility of scarce oil resources, the United States government allocated $400 million per year, from a mere $1 million per year, for solar energy research. The expenditure is small compared to the expenditure on nuclear research. Currently, there is a need for allocating increased resources in solar research. Compared to the old forms of depletable energy (coal, oil, nuclear), solar energy offers a clean renewable form of energy. This presentation will provide an overview of the past, present and future of solar energy.
Of corse, the energy comes from the Sun wich is a "living" planet with his own "life" and activityes wich generates a various amount of energy form starting with light (wich can be converted ) winds, ocean activityes and so on
The sun. Our use of solar energy is (by definition) the energy that we (with factories) or plants (naturally - photosynthesis) produce from the sun's heat and/or light.