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Different kinds of EMR are used to identify medical problems

.Radio waves and magnets work together

.Magnetic resonance imaging

.the sing also generated are used to create an image of the tissue being tested

.Unhealthy tissue looks different from healthy ones

.XRay imagining is useful for diagnosing conditions like broken bones and cavities in teeth.

.X rays are absorbed by bones and teeth but pass through body tissues

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Diagnosing Disease

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-uses infrared, x-rays, ultra violet
-creates images by sensing temperature differences
-find weapons in walls
-uncovers art forgeries

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-visible light and infrared radiation
- Weather satellites use remote sensing to detect visible light and infrared radiation coming from earth.

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Luminal is used to find traces of blood at a crime scene, as shown in figure 3.3. This chemical undergoes a reaction with the iron in blood to give off visible light.

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-Luminol finds traces of blood in a crime scene
-Infrared photos create images by sensing temperature differences like finding weapons and objects in walls
-Investigators use x-rays, infrared, and UV rays to find art work.

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Electro magnetic radiation is used to study the universe.
The hubble space telescope orbits earth. It uses mirros to see things far away with a clear image of what it is.
The images are clearer than telescopes from earth, because of there's no atmosphere to blur the image.
Other parts of the telescope sense UV rays and infrared radiation.
The very large array is the largest radio telescope on Earth.

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- uses reflected light and infrared radiation
-They can detect the location and movement of clouds
- statellites orbit high above Earth’s surface
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Satellites are used to orbit the earth. They use different types of electromagnetic radiation to collect information about the earth. Weather satilites use reflected visible light and infrared radiation that comes from the earth to obtain information about the weather.

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-use radio waves
-send signals to radio receivers that convert them into sound
eg) fire, police, emergency systems and radio stations

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Title:
-What kind of wave is used
-How it is used for the purpose