The movement of light Light Source And solar cells The light from the sun to help students see in daylight. Students of light Electrical enables you to see at night. In addition, students also use various lighting benefits. To learn about light, it helps to understand various phenomena in nature and can put that knowledge to use a lot of movement and travel of light, if we observe around us each day. Will see the light of travel Sun shining through the clouds illuminating light beam through a small window that shows a ray of light. Light travels in a straight line from the light source in all directions. Travel light source in all directions. And moving in a straight section Light does not need particles in motion, such as solar came to Earth with a speed of 300,000 kilometers per second, or 186,000 miles per second, light takes to travel from the sun to Earth, only about 8.5 minutes only light source light source is divided. two categories: 1. Light sources include natural sun light from the stars glowing fireflies lighting, etc. The source of the most important that we recognize the Sun is 150 million kilometers from Earth, the light travels about 300,000 km. second, or 1,080 million kilometers per hour that light can arrive at Earth in just eight minutes of light sources naturally 2. artificial light sources. A light source that has been created by man include light bulb candles of light from the torch from the fire, and a light source, artificial, man-made solar cells or solar photovoltaic (solar cell) semiconductor devices that are available. converts sunlight An electric current Generally, solar cells that are the source of light from the sun and other sources. All together, Photochemical cell Walters Ignatius. (Photovoltaic cell) solar cells Source: http://th.wikipedia.org components of photovoltaic solar energy the Earth is an enormous amount. Most of the plants are used in photosynthesis. Or cooking For humans and animals Also to benefit from the warmth of the sun. And then seeing Solar energy is also used very little. If we do not have storage devices Solar energy is lost when the sun goes down the adoption of solar energy use. Need a device called a solar cell. Which is an electronic device that can transform light energy into electrical energy. Solar cell, a glass plate Front plastered with phosphorus Serves as the negative electrode Rear plastered with silicon and boron serving as a positive electrode current volume. More or less Depending on the size of the cell area. The amount of sunlight And duration of exposure to long do solar cells Source: http://school.obec.go.th/science_wp/I_light/solar1.htm. Present solar cells installed in equipment and tools such as watches, calculators, spacecraft, satellites, etc., who discovered the fabricated solar cell is a physicist German named Heinrich's Trevor discovered. In 1887, by stating that certain materials can provide electricity when light is called. Photo phenomenal Walters Iqbal. (Photovoltaic Effect)
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