Difference between revisions of "Shadow"
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The absence of direct [[sunlight]] tends to mean the shadow is colder than the area around it. | The absence of direct [[sunlight]] tends to mean the shadow is colder than the area around it. | ||
| + | [[Category:Optics]] | ||
Latest revision as of 15:12, September 23, 2011
A shadow is a region of darkness, caused by the placement of an obaque object between a surface and a light source. The length of a shadow cast by the sun can be used to gauge the time; it is shortest at noon (although it will usually still cast a shadow.)
The absence of direct sunlight tends to mean the shadow is colder than the area around it.