STAR LIGHT STAR BRIGHT FIRST STAR I SEE
STAR LIGHT, STAR BRIGHT, FIRST STAR I SEE TONIGHT, I WISH I MAY, I WISH I MIGHT, HAVE THIS WISH I WISH TONIGHT.
a star begins as a huge cloud of hydrogen (nebula)
gravity compresses the nebula until hydrogen fuses into helium
once fusion happens a star is formed
fusion reaction: H+H 2 He + stuff pieces of hydrogen becomes 1 piece of helium with some stuff remaining
fusion energy creates incredible amounts of
einstein’s e formula e = m c 2 = energy m = matter (stuff) c = the speed of light (186, 000 miles per second)
multiple any amount by 186, 000 squared, you get a huge amount
Stars emit this energy in the form of the electromagnetic spectrum (EMS) radio waves least energy longest white light gamma rays ROYGBIV greatest energy wavelengths red orange yellow shortest wavelengths green blue indigo violet
Humans only see white light (ROYGBIV), if white light passes through a prism the light refracts (bends)
the amount the light refracts depends on the wavelength, red bends the least and violet bends the most, this creates the rainbow of color
using a prism allows you to determine many characteristics of the light source astronomers use a spectroscope (prism) to study stars
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