light and shadow examples

http://www.flickr.com/photos/pihe/1394724659/

http://www.flickr.com/photos/deniscollette/406158510/

http://www.flickr.com/photos/sunshinetoday168/1830793606/

http://www.flickr.com/photos/visualsymphony/3008370058/

http://www.flickr.com/photos/lightchaser/322845787/

http://www.flickr.com/photos/click_click/125356942/

http://www.flickr.com/photos/lauronsky/2539931859/

http://www.flickr.com/photos/mnadi/101328892/

http://www.flickr.com/photos/barb46/406044959/

http://www.flickr.com/photos/daruma/3610130533/