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. 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. …. ?. *. ?. =. The problem…. Some constraints were provided as part of the contest: surfaces and illuminant spectra were within three dimensional linear models.. But additional assumptions are necessary to constrain the solution.. 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 . Almost all of our information on the heavens is derived from the light we see. We have returned samples from the Moon and a comet . Also obtained meteor samples. We have landed (with unmanned probes) on only a handful of planets and moons. 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. G. 2. star. , one of more than 100 billion stars in our galaxy . Diameter. : 1,390,000 km - Earth is nearly 100 times smaller. The Sun. No solid surface. Has three layers of atmosphere. Corona, Photosphere, and Chromosphere. 1. The Electromagnetic Spectrum. Wavelength/frequency/energy. MAP TAP 2003-2004. The Electromagnetic Spectrum. 2. Teacher Page. Content: Physical Science—The Electromagnetic Spectrum. Grade Level: High School. 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. flares, and ten facts about the Sun. I also will tell why we should learn more about the Sun . Solar Flares. . What are solar flares? Solar flares are powerful burst of radiation. Harmful radiation cannot pass through Earth’s atmosphere . 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. Light. Light. Properties and Interactions. What is Light?. Light. is a form of energy emitted by the Sun..  . What is Light?. Light. is a type of energy that travels as an electromagnetic wave.. . Fumihiro Koike, Kitasato University. Collaborators:. Izumi Murakami, NIFS (National Institute for Fusion Science). Daiji. Kato, NIFS (National Institute for Fusion Science). Hiroyuki A. . Sakaue. 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. .