In this video Paul Andersen defines water potential and explains how it can be calculated in a simple system. He explains how water can moved through osmosis and break down the two major parts of water potential (solute potential and pressure potential). He finishes the video with a sample calculation of solute potential.
Intro Music Atribution
Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/
Creative Commons Atribution License
All images are either Public Domain or Creative Commons Attribution Licenses:
en.wikipedia, Michael Ströck at. English: 3D-model of a Sucrose Molecule, January 31, 2006. Originally from en.wikipedia; description page is/was here. http://commons.wikimedia.org/wiki/File:Sucrose_molecule_3d_model.png.
Flatabø, Photographed by Guttorm. Living Brown Slug on Painted Brick Wall. Picture Taken in Leikanger, Sogn Og Fjordane, Norway., May 3, 2005. Photograph taken with an Olympus Camedia C-70 Zoom digital camera. Metainformation edited with Irfanview, possibly cropped with jpegcrop. http://commons.wikimedia.org/wiki/File:Brown_snail.jpg.
Flickr, Dubravko Sorić SoraZG on. English: a Glass Salt Shaker with a Metal Top Photographed on a White Background, July 6, 2009. http://www.flickr.com/photos/11939863@N08/3793288383/in/photostream/. http://commons.wikimedia.org/wiki/File:Salt_shaker_on_white_background.jpg.
MJM, APN. English: A Spoon Slowly Drops Sugar into a Glass of Water in Order to Display the Procedure of Making a Solution., January 7, 2012. Own work. http://commons.wikimedia.org/wiki/File:Spoon_Sugar_Solution_with_Glass.jpg.
Poseidon Sculpture, n.d. http://commons.wikimedia.org/wiki/File:Poseidon_sculpture_Copenhagen_2005.jpg.
Salvà, Turgor pressure on plant cells diagram svg: LadyofHatsderivative work: Antoni. English: In Biology, Turgor Pressure or Turgidity Is the Pressure of the Cell Contents Against the Cell Wall, in Plant Cells, Determined by the Water Content of the Vacuole, Resulting from Osmotic Pressure., 8:40 (UTC). Turgor pressure on plant cells diagram.svg. http://commons.wikimedia.org/wiki/File:Turgor_pressure_on_plant_cells_diagram-ca.svg.
work, Own. English: Structure of the Water Molecule (H2O), August 2008. Based in part on the public domain image Image:H2O (water molecule).jpg by Solkoll. Corrected by Plenz. http://commons.wikimedia.org/wiki/File:Water_molecule.svg.