The movement of the light source light and solar cell The light from the sun helps students see in the daytime. Students use the light from electricity to see at night. The students also use light use.In nature, and can use the knowledge to have many uses!
movement and journey of light
.If we observe around us each day to see the journey of light. The sun shone through the clouds window light beam small called rays of light show. Light travels in a straight line from the light source in all directions.And moving part directly. The light does not rely on a medium in the movement, such as solar travelling to world speed estimate, 300000 kilometers per second, or 186 000 miles per second, but the light travel time from the sun to the โลกเพียง about 8.5 minutes light source light source divided 2 types. Is 1.Light source: natural light from the sun, the light from the stars, light from firefly, etc., light sources, the most important of which we know. Is the sun. The sun is far from the earth 150 traveling light, about 300 kilometres.000 kilometers per second, or 1 080 kilometres per hour, concluded that light can travel to earth by only 8 minutes. Natural light source 2.Artificial light source A light source is created by human beings, including the light from the bulb from the candle, plenty of Taiwan from the fire, etc. the source of artificial light man-made
. Solar cellPhotovoltaic or solar cells (solar cell) semiconductor devices which function to convert from sunlight into electricity. In general, solar cells with both sources of light from the sun and other sources are called together.(photovoltaic cell)
.Solar cell source: http: / / th.wikipedia.org solar cell material
.Solar energy light to earth amounts. Most plants are used in photosynthesis, or cooking for humans and animals. In addition to benefit from the warmth of the sun, and visibility.If we don't have a storage device. Solar energy will be lost when the sun sets
.Solar energy use. Need a device called the solar cell Which is an electronic device that can change the light energy into electrical energy. Solar cells is the glass pane. The front plastered with phosphorousThe plastered with compound silicon and boron served as positive electrode, quantity of electricity. More or less, depending on the size of the area of the cell. The sun and the duration of light that how long
.Solar cell source: http: / / school.obec.go.th / science_wp / I_light / solar1.htm. At present solar cell installed in the equipment and utensils, such as watches, calculators, spacecraft, satellites Etc.
.Who discovered the principle of solar cell is fabricated physicists
Germany named Heinrich แฮรตซ์ discovered in A.D. 1887 by
enter. Some of these materials can provide electricity when the light
.It is called as phenomenon fo Dou. Pour IK (photovoltaic
effect)
.
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