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Electromag Energy
| Question | Answer |
|---|---|
| Electromagnetic energy | form of energy that exists as an electric and magnetic disturbance in space |
| slides with too much info to fit | 2, 6, 11, 12, 13, 15, 22, 23 |
| James Maxwell | electromagnetic theory, “an electric and magnetic disturbance traveling through space at the speed of light.” |
| Electromagnetic Spectrum | Range of energies. way of ordering or grouping the different electromagnetic radiations |
| Frequency (f) | Number of wavelengths; rate of rise and fall |
| Velocity | speed of light (constant at 3.0 x 10^8 m/s) |
| Wavelength (λ) | Distance between 2 successive points of a wave |
| Amplitude | Wave intensity identified by height; ½ range from crest to valley |
| Wavelength & Frequency are ___________ proportional | inversely |
| when wavelength is long and frequency is low the energy is ______ | low |
| amplitude and effect on energy | height of wave, no effect on energy |
| photons | smallest quantity of electromagnetic energy |
| photons have no ______ or __________ | mass or charge |
| electromagnetic radiation Consists of simultaneous electric and magnetic waves ____ degrees to each other | 90 |
| The full range of all of the different types of electromagnetic radiations arranged in order of increasing energy: | Radio Radar/microwaves Infrared Visible light Ultraviolet X-rays Gamma rays |
| visible light | Identified by wavelength, Non-ionizing, Smallest segment of EM spectrum |
| color black | represents absorption of all of the color wavelengths |
| White light | consists of all of the colors of the visible spectrum together. |
| infrared | Low-Energy EM radiation |
| Ultraviolet | has energies approaching those of x-rays and gamma rays. |
| Gamma Rays | Originate in the nucleus of atoms |
| Visible light photons behave more like ________ | waves |
| X-ray photons behave more like_________ | particles |
| Wavelength (λ) = | velocity/ frequency |
| Particle Theory | X-rays behave as particles when interacting with matter |
| f= c/λ f unit is | frequency Hertz (Hz) |
| f= c/λ c is | C = 3 x 108 m/s |
| Max Planck | Father of Quantum Physics. Described the relationship between radiation energy & frequency |
| Planck’s Quantum Theory | X-ray photon energy is directly proportional to x-ray photon frequency |
| Planck’s Quantum equation | Photon energy = Planck’s constant x frequency (E = hf) |
| unit for E (Photon energy) | eV |
| H= Planck’s constant | 4.15 x 10-15 eVs |
| unit for f (photon frequency) | Hz |
Created by:
katorn
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