Web watch

To suggest topics or sites for Web Watch, please visit http://www.physicstoday.org/suggestwebwatch.html . Compiled and edited by Charles Day

http://www.aip.org/history/cosmology

How humans have observed and made sense of the cosmos is the subject of Cosmic Journey: A History of Scientific Cosmology, the latest online exhibit from AlP’s Center for History of Physics.

http://water.usgs.gov/waterwatch

From the US Geological Survey comes WaterWatch, an interactive map that displays data from a network of streamflow monitors in the US. By clicking on a state, you see how the day’s streamflow compares with the historical average at each of the state’s monitoring points.

http://www.cambridgeincolour.com/tutorials.htm

The extensive set of tutorials on Sean McHugh’s website Cambridge in Colour provides science-based advice on taking better digital photographs. McHugh’s forte is long exposures under dim lighting conditions.