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39 Cards in this Set
- Front
- Back
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Electromagnetic waves
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A transverse wave that transfers electrical and magnetic energy
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Electromagnetic radiation
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The energy that is transferred through space by electromagnetic waves
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polarized light
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The light that passes through vibrates in only one direction
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Photo electric effect
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When a beam of light shines on one some substances it causes tiny particles called electrons to move their movement of electrons causes an electric current to flow sometimes late can even cause an electron to move so much that it is knocked out of the substance
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Photon
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A packet of light energy
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The formula to find speed
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Speed equals wavelength times frequency
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Electromagnetic spectrum
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The complete range of electromagnetic waves placed in order of increasing frequency
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The order of the electromagnetic spectrum
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Radio waves infrared rays visible light ultraviolet rays xrays and gamma rays
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Radio waves
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Electromagnetic waves with the longest wavelength and lowest frequencies
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Broadcast ways
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Radio waves with longer wavelengths are used in broadcasting they carry signals for both radio and television programs
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Microwaves
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The radio waves with the shortest wavelength and highest frequencies
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Radar
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A system that uses reflected radio waves to detect objects and measure their distance and speed
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Infrared rays
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Electromagnetic waves with wavelengths shorter than those of radio waves
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Thermo gram
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An image that shows regions of a different temperatures in different colors
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Visible light
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Electromagnetic waves that you can see
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Ultraviolet rays
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Electromagnetic waves just shorter than those of visible light
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X-rays
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Electromagnetic waves with wavelengths just shorter than ultraviolet rays
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Gamma rays
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Electromagnetic waves with the shortest wavelength and highest frequencies
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Radio waves example
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radio waves carry information and entertainment through radio and television
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Microwaves example
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Used to transmit cellular phone messages and cook food
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visible light example
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The part of the electromagnetic spectrum you can see each different wavelength of visible light as
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Ultraviolet rays example
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Small quantities that help your body produce vitamin D
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X-rays example
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Used to see inside the body
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gamma rays
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Used to treat cancer through chemotherapy
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Illuminated
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Objects that reflect light from some kind of light source
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Luminous
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An object that gives off its own light
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Spectroscope
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Object used to view different colors of light produced by a light bulb
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incandescent light
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A light bulb that glows when a filament gets white hot
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Ordinary light bulbs
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The first light bulbs that quickly heat up that hot and have small amounts of light
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Tungsten halogen bulb
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he pulled that has a tungsten filament and contains hello Jin gas such as iodine or bromine is:
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Fluorescent lights
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A bulb that contains a gas and is coated on the inside with a powder
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Vapor light
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A bulb that contains neon or airgun gas and a small amount of solid sodium or mercury
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Neon light
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A sealed glass tube that contains neon gas one an electric current passes, through the neon, particles of the gas absorb energy, the cat can not hold the energy and then give off a form of light
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Amplitude modulation
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Stanford a_m. Frequency is constant call laura but the temple to do changes, and has long ways thanks
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Frequency modulation
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Stands for SM, a method of translating signals by changing the frequency of a wave
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Cellular phones
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Phones that transmit and receive signals using high micro weeks
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Satellite phone systems
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A system that says radio A's from a phone to a satellite in the satellite transmits the waves back to another phone
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Television satellites
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Esata lloyd that sends f_m ways 2 a_t_v in stations around the world
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Global Positioning System
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GPS, a system that is used to track positioning altitude and longatude used on airplanes
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