Advanced learning Stock Photo A manager, trying to understand some very complex theories, oblivious of the people in the background trying to explain it to him We Sell Images We are: Hugo de Wolf, Laurens Poelhekke, Jan de Boer en Jarno Kraayvanger. We... [more] info Author Page Portfolio: 3518 images. Gallery Page Contact We Sell Images Updates / RSS Network Image updated—February 17, 2014 Keywords advanced, chemistry, complex, curve, development, diagram, difficult, educated, education, engineering, equations, examining, exams, explaining, Figuring out, formulas, grasping, high brow, jacket, knowledge, learning, learning curve, male, man, matters, mid adult, physics, practice, showing, single person, smart, studying, teacher, teaching, technology, training, understanding, university, whiteboard, writing, yourself Image Categories Business | Concepts | Creative Image #5905 Size Type File Info Price ( Euros € ) Webjpg6.67" × 5.39" @ 72 dpi480 × 388px5.00 Mediumjpg13.33" × 10.78" @ 72 dpi960 × 776px10.00 Largejpg5.33" × 4.31" @ 300 dpi1600 × 1294px20.00 Originaljpg15.33" × 12.4" @ 300 dpi4600 × 3719px30.00 End User License Agreement Checkout (0.00) Symbiostock Community Symbiostock CommunityNetwork with illustrators, photographers, and designers. Symbiostock on TwitterSymbiostock news. Symbiostock on FacebookCommunity maintained Facebook hub. Symbiostock.infoSearch images on the Symbiostock network. Symbiostock SearchSearch Symbiostock images and network. Symbioguides.comSymbiostock knowledge base. Symbiostock.comSell your images and network with fellow microstock professionals. ClipArtof.comHigh Resolution Stock Illustrations & Clip Art ClipArtIllustration.comFirst Symbiostock Site, and home of the Orange Man Microstockgroup.comA meeting place for microstock professionals.