ELECTROMAGNETIC SPECTRUM the arrangement of these waves according to their wavelengths and frequencies
Published on Nov 23, 2015
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PRESENTATION OUTLINE
ELECTROMAGNETIC SPECTRUM
the arrangement of these waves according to their wavelengths and frequencies
Photo by NASA's Marshall Space Flight Center
PHOTON
light acts like a stream of particles
Photo by carolinebayet
CONTINUOUS SPECTRUM
produced by an incandescent solid, liquid, or gas under high pressure
Photo by y.caradec
ABSORPTION SPECTRUM
produced when visible light is passed through a relatively cool gas under low pressure
Photo by kevin dooley
DOPPLER EFFECT
perceived change in wavelength of a wave that is emitted from a osurce that is moving away or toward an object
Photo by Serge Melki
PHOTOSPHERE
the luminous envelope of a star from which its light and heat radiate
Photo by Davide Simonetti
CHROMOSPHERE
irregular layer above the photosphere where the temperature rises from 6000°C to about 20,000°C. At these higher temperatures hydrogen emits light that gives off a reddish color
Photo by Lights In The Dark
CORONA
the rarefied gaseous envelope of the sun and other stars. The sun's corona is normally visible only during a total solar eclipse when it is seen as an irregularly shaped pearly glow surrounding the darkened disk of the moon.
Photo by Sam Ilić
SOLAR WIND
stream of energized, charged particles, primarily electrons and protons, flowing outward from the Sun, through the solar system at speeds as high as 900 km/s and at a temperature of 1 million degrees, it is made of plasma
Photo by NASA Goddard Photo and Video
SUNSPOT
temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. They correspond to concentrations of magnetic field that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere
Photo by NASA Goddard Photo and Video
PROMINENCE
characterizes the height of a mountain or hill's summit by the vertical distance between it and the lowest contour line encircling with no higher summit. It is a measure of the independence of a summit
Photo by NASA Goddard Photo and Video
SOLAR FLARE
a brief eruption of intense high-energy radiation from the sun's surface, associated with sunspots and causing electromagnetic disturbances on the earth, as with radio frequency communications and power line transmissions
Photo by NASA's Marshall Space Flight Center
AURORA
a natural light display in the sky
Photo by Billy Idle
NUCLEAR FUSION
is a nuclear reaction in which two or more atomic nuclei come very close and then collide at a very high speed and join to form a new type of atomic nucleus. During this process, matter is not conserved because some of the matter of the fusing nuclei is converted to photons
Photo by Matt. Create.
