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Astronomy (103)
ASTA01H3 (77)
Lowman (12)
Lecture

lecutre 6-7

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Department
Astronomy
Course
ASTA01H3
Professor
Lowman
Semester
Fall

Description
Lecture 6Escape velocity the speed necessary for a projectile to completely escape a planets gravitational field RadiationoEM RadiationVisible light is the particular form of em radiation that our eyes espond to Invisible radiation infrared ultraviolet x rays and gamma raysAll travel at speed of light and travel in form wave through spaceoWave PropertiesPeriod is amount of time required wave pattern to repeat itself 9Wavelength measured in nanometer 10m10The Angstrom is 01nm or 10moCharged ParticlesChanges in the electric field of the particle travel out through the electric filed as em wavesThe frequency at which particle vibrates determines the frequency of the EM wavesIf a charged particle begins to vibrate its electric field changes and the resulting disturbance travels through space as waveoEM waves
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