light and sound brief presentation for eso

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Post on 20-Jun-2015

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  • 1. LIGHTANDSOUNDWAVES AND ENERGY

2. VISIBLE LIGHTCOLOURS The visible radiation is descomposed by a prism or the rain drops forming the Rainbow.Each colour has a different wavelength. The primary colours together are the sun light 3. THE ELECTROMAGNETIC SPECTRUM The electromagnetic radiation is energy by waves. T Each type of radiation has different energy and therefore different wavelength and frecuency. This type of energy does not need matter for propagation travels by vacuum. 4. SOUND Sound is a type of energy propagated by mechanical waves. Needs matter for transporting,it travels at more speed in solids. Each sound has different characteristics as the colours of the light . 5. ULTRASOUND APPLICATIONS Ultrasound is an oscillating sound pressure wave with a frequency greater than the upper limit of the human hearing range. Ultrasound is thus not separated from 'normal' (audible) sound based on differences in physical properties, only the fact that humans cannot hear it. . Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasonic imaging (sonography) is used in both veterinary medicine and human medicine. Organisms such as bats and porpoises use ultrasound for locating prey and obstacles 6. FOR LEARNING MORE: http://www.slideshare.net/AlkorBilingual/u12-light-sound http://www.physicsclassroom.com/Class/sound/u11l1a.cfm 7. FOR LEARNING MORE: http://www.slideshare.net/AlkorBilingual/u12-light-sound http://www.physicsclassroom.com/Class/sound/u11l1a.cfm