ISP209s7 Lecture 18-1-Today• Announcements: – The average on Exam 2 was 32.7/40; outstanding– Exam #2 extra credit is due tomorrow March 19 at 8:00 am.– HW#8 will be due 26 March at 8:00am.– Submissions for the Spring Break Story Contest are due March 19. All voting will be anonymous.•The life of the stars•The Uncertainty Principle Revisited
has intentionally blurred sections.
Sign up to view the full version.
ISP209s7 Lecture 18-2-Our Sun•A huge, hot ball of mostly hydrogen and helium (3% other stuff)•Power output (luminosity) 3.26E+26 W•It is 93 million miles from Earth. Intensity at the Earth is about 1000 W/m2. That is like 10 100 W light bulbs every square meter•The Sun is a complicated object