home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Invisible Universe
/
Invisible Universe (1995)(Voyager)[Mac-PC].iso
/
mac
/
MOVIES
/
MIAWS
/
_GLOSS Full Text.DIR
/
02152_Field_electromagnetic radiation.txt
< prev
next >
Wrap
Text File
|
1995-11-04
|
556b
|
20 lines
produced by the largest, hottest stars.
They are also used to trace the
remnants of supernova explosions
such as neutron stars and black holes.
ultraviolet: With wavelengths
slightly shorter than those of visible
light, ultraviolet rays are fairly
energetic and can be harmful to
humans. Only a fraction of the
ultraviolet rays that reach our planet
penetrate the atmosphere to ground
level.
visible (optical) light: The small
portion of the electromagnetic
spectrum sensitive to such a narrow
range of wavelengths, stars like the