Talk about what solar energy can be used for.

The sun not only brings warmth to mankind, but also provides energy for mankind. Solar energy is an environmentally friendly, pollution-free and renewable clean energy, which is widely used in our lives, such as solar water heaters, solar cells, and solar energy for swimming pool water heating.

Tokelau, a dependency of New Zealand in the South Pacific, is the first human settlement in the world to realize that all energy supply comes from solar energy. The last solar panels installed along the local coral reefs have been put into use, and Tokelau has installed more than 40,000 solar panels to meet the needs of the island's 65,438+0,500 residents.

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Technical principle of solar energy:

Solar energy is produced by hydrogen-helium fusion of hydrogen atoms in the sun, which releases huge nuclear energy and radiant energy from the sun. Most of the energy needed by human beings comes directly or indirectly from the sun. Plants release oxygen and absorb carbon dioxide through photosynthesis, and convert solar energy into chemical energy and store it in plants.

Fossil fuels such as coal, oil and natural gas are also primary energy sources formed by the long geological evolution of ancient plants and animals buried underground. The energy contained in the earth itself usually refers to the energy related to the internal heat energy of the earth and the energy related to the nuclear reaction.

People's Network-What has solar energy done for us?