How do we quantify stellar brightness? This lecture introduces
the inverse square-law of apparent brightness, the relation between
Luminosity and Apparent Brightness, introduces the stellar magnitude
system, and discusses photometry and the how we measure apparent
brightness in practice. Recorded
2006 January 11 in 1008 Evans Laboratory on the Columbus ... Show More
Jun 2009
Telescopes that Rocked Our World
This year marks the 400th anniversary of Galileo’s use of the first telescope. On this week’s show, we reflect on how telescopes have shifted our perspective on how small we are in size, space, and time. We also discuss how they help astronomers discover new and interesting aspec ... Show More
56 m