Solar energy is the energy produced by the fusion of internal hydrogen atoms to release enormous nuclear energy, which comes from the radiant energy of sunlight. Most of the energy needed by humans comes directly or indirectly from the sun. Plants release oxygen, absorb carbon dioxide, and convert solar energy into chemical energy that is stored in the plant body through photosynthesis.
Light energy: The form of energy corresponding to the movement of photons is light energy. Light energy is produced bythe sun, candles and other light sources. objectsstrong>A form of energy released.
So, solar energy belongs to light energy If you want to study photosynthesis in plants, it is generally correct to say solar energye fixed or light energy, but . solar energy is more specific and therefore more commonly used.
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According to the classification of energy production, it can be divided into primary energy and secondary energy. Among them, electrical energy is a secondary energy source; Both nuclear energy and solar energy are primary energy sources. That is to say, electrical energy is an energy product that must be converted from the processing of primary energy. Primary energy can be obtained directly from nature.
According to the classification of energy properties, it can be divided into combustible energy and non-combustible energy. WhereElectric energy can be either a base energy sourcefuel, or a fuel-free energy source (depending on how it is produced). Both nuclear energy and solar energy are non-combustible energy sources.
According to the classification of energy pollution, it can be divided into polluting energy and clean energy. Electric energy can be either clean or polluting (depending on how it is produced). Both nuclear power and solar power are clean energy sources.
Conversion between energy production:
1. Different forms of energy can be converted into each other. Among the primary energy sources, wind, water, ocean currents and waves are based. Mechanical energy (kinetic energy and potential energy) is supplied in the form and can be converted into energy or electricity using various wind machines (such as wind turbines).es) and hydraulics (such as hydraulic turbines).
2. Conventional energy sources such as coal, oil and natural gas generally convert chemical energy of combustion into thermal energy through combustion.
3. Thermal energy can be used directly, but a large part of thermal energy is converted into electricity through various types of thermal machines (such as internal combustion engines, steam turbines and gas turbines, etc.) operate various types of machinery and transport tools to work; or drive a generator to send electricity to meet the lives of people, workers and farmers.industrial production needs.
4. The energy required for electricity generation and transportation represents a large proportion of total energy consumption. The energy demand for electricity production is expected to beite will represent more than 40% of primary energy development by the end of the 20th century. The higher the proportion of primary energy converted into electricity, the higher the degree of electrification, the more advanced productivity and the higher the standard of living.
Reference for the content above? Baidu Encyclopedia-Energy