Browse Items (2 total)

moonphasechart.gif
Graph of the moon's brightness with phase from the first application of the selenium cell photometer.

algol.jpeg
Joel Stebbins used the selenium cell photometer to study the known variable star Algol. The improved accuracy of the photometer revealed the second minimum and the limb darkening.
Output Formats

atom, dcmes-xml, json, omeka-json, omeka-xml, rss2