Science Biology UNIT 3 0.0 / 5 ? PhysicsWavesGCSEAQA Created by: GeorgianaaCreated on: 12-01-15 17:04 X-rays High energy wave from part of the electromagnetic spectrum between gamma rays and ultraviolet rays 1 of 8 Charged-Coupled Devices Used to record and display an image 2 of 8 CT scanners A medical scanner that uses X-ray to produce a digital image of any cross-section through the body or 3D image of an organ 3 of 8 Ultrasound waves Sound wave at a frequency greater than 20,000 Hz 4 of 8 Refraction The change of direction of a light ray when it passes across a boundary between two transparent substances 5 of 8 Refractive Index The N of a transparent object is a measure of how much the substance can refract a light ray 6 of 8 Critical Angle The angle of incidence of a light ray in a transparent substance which produces refraction along the boundary 7 of 8 Total internal reflection Occurs when the AOI is greater than the CA in a transparent substance. When this occurs the AOR is equal to the AOI 8 of 8
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