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Pstti concept of light

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Information about Pstti concept of light
Education

Published on March 4, 2014

Author: PreschoolTeachersTra

Source: slideshare.net

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Presented by Meenakshi Jhanwar

Light is always around us, but we don't usually spend a lot of time thinking about it. Nevertheless, light is an extremely important part of our daily lives. Without light, we couldn't see anything in our world, including colors. There would be no light bulbs, no fires, and no stars in the sky. Without light, a lot of the things we do every day would no longer be possible. However, many of us don't understand how light works or what it is made of. Below, we will find answers to all these different questions, as well as a multitude of resources to help us learn more about light.

    Light is simply a name for a range of electromagnetic radiation that can be detected by the human eye Sources of light Natural-Sun, Moon, Stars etc Otherslamp, bulb, matches,fireflies, candles etc

      We need light to see things Light seems to travel in a straight line Light goes through some things Some things reflect light You can block light to make shadows Light is made up of lots of colors

      transparent - light passes through translucent - some light passes through opaque - no light passes through reflect, reflection - light bouncing off objects ray - a straight line of light prism - a specially shaped transparent object that is used to separate light

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