wave propagation. EMR is characterized by the frequency or wavelength of its wave. The electromagnetic spectrum‚ in order of increasing frequency and decreasing wavelength‚ consists of radio waves‚ microwaves‚ infrared radiation‚ visible light‚ ultraviolet radiation‚ X-rays and gamma rays. The eyes of various organisms sense a somewhat variable but relatively small range of frequencies of EMR called the visible spectrum or light. Higher frequencies correspond to proportionately more energy carried
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Grade-12-Physical-Science-March-2011-Paper-1 MARKS: 150 TIME: 3 hours This question paper consists of 16 pages and 3 data sheets. |INSTRUCTIONS AND INFORMATION | | | |1. |Write your centre number and examination number in the appropriate spaces on the ANSWER
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Micah Bolivar MWF 8:30-9:30 ULTRAVIOLET-VISIBLE SPECTROMETRY A diagram of the components of a typical spectrometer are shown in the following diagram. The functioning of this instrument is relatively straightforward. A beam of light from a visible and/or UV light source (colored red) is separated into its component wavelengths by a prism or diffraction grating. Each monochromatic (single wavelength) beam in
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booths‚ damages dermal tissue and the lens of the eye (“Ultraviolet Radiation”). The dangers of tanning beds is not widely known because the public is not educated on the problems that may occur from overexposure to UV radiation. Turns out the UV rays are much more damaging to your eyes than to your skin‚ and in a tanning bed‚ not even closing your eyes can protect your vision (Wallace). Frequent tanners do not realize how dangerous ultraviolet radiation is for their eyes. In a tanning bed‚ your
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lines is produced by electrons going from high to lowe energy orbits and as a result releasing energy and electromagnetic waves with longer wavelengths. This means that these lines are lower in energy when compared to the ultraviolet line spectrum. In addition‚ the ultraviolet lines indicates that electrons is going from high to low energy thus‚ releasing more energy and shorter wavelengths. 3.) a) 4d 5s 4p 3d 4s 3p 3s 2p 2s 1s 1s2 2s2 2p6
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What impact might CO2 emissions have on overall global warming? In the 19th century‚ scientists realized that gases in the atmosphere cause a "greenhouse effect" which affects the planet’s temperature. These scientists were interested chiefly in the possibility that a lower level of carbon dioxide gas might explain the ice ages of the distant past. At the turn of the century‚ Svante Arrhenius calculated that emissions from human industry might someday bring a global warming. Other scientists dismissed
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Integumentary System Laszlo Vass‚ Ed.D. Version 42-0280-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor
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have to face with is the size of ozone layer. The ozone layer that protects the Earth’s surface from harmful ultraviolet radiation is damaged by CFCs (chloro-fluorocarbons). CFCs are substances that come from refrigerators‚ aerosol cans and other products. When we use this products‚ we free CFCs which go into the atmosphere and destroy the ozone layer which protects us from ultraviolet radiation. The smaller the ozone layer the stronger the radiation which leads to skin burning and some serious
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emitted by the eye making contact with an object. | Huygens | Light is a wave. | Dual Nature | In modern theory‚ Light has a dual nature; part particle and part wave. | R.M.I.V.U.X.G. | Radio waves‚ microwaves‚ infrared waves‚ visible light‚ ultraviolet rays‚ gamma rays. | Energy in an Electromagnetic Wave | Energy is part electric and part magnetic. | DO NOT Pass through Light | Infrared and Ultra-violet light do not pass through glass while visible light does. | Resonance on Glass | Electron
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The Figure 6-18 in my text book was an example of an electromagnetic spectrum‚ which is all wavelengths of light both seen and unseen (Trefil & Hazen‚ 2010). The display of the electromagnetic spectrum showed gamma rays‚ X-rays‚ ultraviolet light‚ infrared‚ visible light‚ microwave‚ radio waves‚ as well as a visible spectrum wavelength (Trefil & Hazen‚ 2010). The diagram shows at what frequency and wavelength each wave moves and what it allows us to see‚ hear‚ and feel with visible light
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