PPT-Atoms and Spectra The Sun’s Visible-Light Spectrum

The Amazing Power of Starlight By analyzing light received from a star astronomers learn about the stars Chemical composition Surface temperature Radius Total energy output Density. Objectives. . . 1. Determine the. . emission spectrum of Hydrogen and other elements.. 2. Calculate the expected wavelengths of H using the Rydberg equation.. 3. Determine the composition of unknown solutions using flame tests.. www.highpoint.edu. /~. afuller. /PHY-1050. Pre. -Lecture Quiz:. MasteringAstronomy. Ch15 . pre-lecture quiz due . February 17. MasteringAstronomy. . Ch16 . pre-lecture quiz due . March 10. Homework: . Recap. No HW this . week. Project due 11/22. Light . /electromagnetic energy. Wavelength, frequency, energy. Electromagnetic spectrum: X rays, ultraviolet, visible, infrared, microwave, radio waves. s. 10/24/14. Electron . Config. , Orbital diagrams, Valence, Unpaired electrons, etc.. Drill. What are the three principle that govern electrons?. What are the shapes of the orbitals?. HW: pg. 8 Star Spectra. ASTR 101. Prof. Dave Hanes. The . Pessimist. [writing in 1835]. . On the subject of stars, all investigations which are not ultimately reducible to simple visual observations are…necessarily denied to us… We shall never be able by any means to study their chemical . 14-11. Ultraviolet and visible light give rise to electronic excitations.. Spectroscopy of organic molecules is possible because the absorption of radiation is restricted to quanta having energies corresponding to specific molecular excitations:. 1. 0. .1 . What is Light?. The sun emits large amounts of energy in all directions. Some of this solar energy reaches Earth and heats the Earth’s surface. . SOURCES:. a. Natural . . ex: sun, fireflies. Deborah Scherrer. Stanford University . Solar Center. 1. How can we study the stars & Sun?. No matter how good your telescope, a star is only a point of light. We can. ’. t get there from here. 10/27/14. Spectral Analysis. Drill. How do you calculate valence?. How many valence electrons do these elements have?. O. Xe. Fe. Ba. HW: pg. 9 Valence electrons. Objectives. IWBAT. Calculate valence for any element.. Emitting to the Truth. Start a new thread/topic. Learning Target: What does color tell us about the underlying structure of matter?. Update TOC. Emitting to the Truth. Read the Introduction p. 158 & 159. 5.1 Light & Quantized Energy. Wrapped Box. PURPOSE. Make observations using all the senses except sight.. PROCEDURE. Read and complete the lab safety form. Obtain a wrapped box from your instructor. Electromagnetic Waves. Electromagnetic (EM) waves . are waves caused by oscillations occurring simultaneously in electric and magnetic fields. A . 2D. transverse. wave. They DO NOT require any medium in order to propagate. 6. th. grade . Mrs. Messina. DO NOW. : 2/23/16. T. hink about the term “. electromagnetic. ”. . List as many things . that you can think of that are considered electromagnetic.. Electromagnetic energy. are due to changes in vibration energy accompanied by changes in rotation energy, broadly speaking, the range in the electromagnetic spectrum that extends from . (0.8 -200 µm). is referred to as the infrared region. .