The document discusses various topics related to light and the sun, including: 1) Light carries both energy and momentum even though it has no mass. Light phenomena can be understood by treating light as both a particle and wave. 2) Shadows and eclipses are discussed. A lunar eclipse occurs when the earth passes between the sun and moon, casting its shadow on the moon. 3) All objects emit radiation called blackbody radiation whose spectrum depends on the object's temperature, with higher temperatures emitting light with shorter wavelengths.

5. Shadows and Eclipses Lunar Eclipse, Wikipedia View from perspective of observer on earth, looking up at moon

9. Solar Eclipses Solar Eclipse viewed from the space station Next total solar eclipse in US: August 27, 2017 http://xjubier.free.fr/en/site_pages/solar_eclipses/TSE_2017_GoogleMapFull.html

12. From atomic emission lines to incandescence (blackbody radiation) http://www.physics.umd.edu High pressure mercury Solar spectrum Low pressure mercury

14. Infrared cameras—we can’t miss this fun http://www.youtube.com/watch?v=1th1MYyosQk&feature=related Scientists identified this creature based on it’s infrared spectrum http://www.youtube.com/watch?v=xQVPTlSaoys I don’t know what this is, but it’s awesome

17. The blackbody spectrum can reveal the temperature of a glowing object Spectrum viewer: http://www.mhhe.com/physsci/astronomy/applets/Blackbody/applet_files/BlackBody.html Color Temperature: http://www.techmind.org/colour/coltemp.html

23. The solar spectrum Solar spectrum demo – see continuous spectrum & also absorption spectra (hydrogen)