Fig 6. If the Sun is straight over your head, its rays pass through one thickness of the Earth's atmosphere, or one air mass (m). As the Sun's angle over the horizon decreases, the Sun's rays travel through progressively more atmosphere, and m increases.
TERC VHS-1 Sun Photometer:
[
Figures and Illustrations Index
] [
Manual TOC
]
Haze-SPAN
, A project of the
Concord Consortium
Copyright © 1997. All rights reserved.
Last updated: 21-Apr 1997: http://www.concord.org/haze/spbuildfig6.html
Questions about Haze-SPAN:
carolyn@concord.org
| about this site:
webmaster@concord.org