PPT-How do stars produce energy?

Nuclear reactions Project due Friday Lab this week Assignments next week Measuring radial velocities from light Doppler shift Astronomy applications Light redshift and blueshift Sound pitch changes. Homogeneous and uniform cosmic expansion . Hubble constant determines scale factor . Hubble diagram was based on a limited distance scale calibrated by Cepheid variable stars in relatively nearby galaxies. Thermal Spectra. Emission . and Absorption Spectra. Recap. Campus observatory. Project . due 11/22. Continuous . emission and colors of . objects. Why do dense objects produce continuous emission?. Temperature as a measure of average speed of atoms in a material. Daisaku Nogami (Kyoto University). 2014/01/23(Thu). Subaru User's Meeting 2013@NAOJ. Collaborators: K. Shibata, H. . Maehara. , S. Honda, T. . Shibayama. ,. S. . Notsu. , Y. . Can nuclear energy overcome its bad rap?. CHAPTER . 27 . NUCLEAR FUTURE. Learning Outcomes. At the end of this chapter, you should know: . As radioactive isotopes decay, varying levels of danger may occur.. Soprano I Hence  stars,  you  daz- zle but the sight,   you teach to Soprano II Hence  stars, \r \r \r Alto Hence  stars, hence   stars too  dim of light,  you  daz-  zle  b The Sun and the Stars. The Sun and the Stars. Limb darkening. The surface of the sun does not have uniform brightness, it appears bright toward the centre, darker towards the edges, and the colour is redder, an effect known as Limb darkening - why?. Wind energy – wind farms convert to electrical energy . Wind power is inexhaustible. Could meet electricity needs of the lower 48 states. Texas and California are top producers. Core Case Study: The Astounding Potential for Wind Power in the U.S.. constellations. a. Ancient cultures used . mythology. or everyday items to name constellations. 2. Modern astronomy studies . 88 . constellations. 3. Some constellations are not . visible. all year because Earth revolves around the Sun. Stars 1. Patterns of stars – constellations a. Ancient cultures used mythology or everyday items to name constellations 2. Modern astronomy studies 88 constellations 3. Some constellations are not HR-Diagram- What is it?. Stands for the . Hertzsprung. -Russell Diagram. Graphs surface temperature (color) vs. Absolute Brightness (Luminosity). Horizontal Axis- Surface Temp/Color. Vertical Axis- Absolute Brightness . Guidepost. In this chapter, you will consider how the interstellar medium condenses into stars and what the conditions inside stars must be like. How do stars form?. What is the evidence that stars are forming now?. Emission . and Absorption Spectra. Recap. Canvas homework due . FRIDAY. Lab this week: the . Hertzsprung. -Russell diagram (unfortunately, getting here a little ahead of class!). Project due 11/. 22: see information from Canvas home page (. How do stars work and evolve?. Why do stars shine?. Nuclear reactions. Fusion and fission reactions. How nuclear reactions can create energy. Why is it hard to get fusion nuclear reactions to occur?. Daisaku Nogami (Kyoto University). 2014/01/23(Thu). Subaru User's Meeting 2013@NAOJ. Collaborators: K. Shibata, H. . Maehara. , S. Honda, T. . Shibayama. ,. S. . Notsu. , Y. .