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42 Lecture Hubble Law
Hubble's Law for Galaxies
Velocities measured
Doppler shift Nearly all galaxies and clusters are moving away from us (red-shifted)
Distances measured
Cepheid variables Tully-Fisher relation
Hubble's Law = The greater the recessional velocity (redshift), the larger the distance
Not theoretical idea, but observational fact
Velocity (km/s) = H O Distance (Mpc) Where H O 75 km/sec/Mpc = " Hubble' s Constant"
Example:
every For 1 Mpc in distance, a galaxy is receding by 75 km/s.
Hubble's Law and Distances
Hubble's law allows us to measure distance to very distant galaxies. If HO is known and velocity measured via Doppler shift of spectral lines, the distance can be estimated.
The Hubbl...

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Quiz 2MAT 118, Spring 2003circle your section 2 Tues 11:20 3 Thur 12:50 4 Tues 5:30PRINT your Name:1. The participants in a meeting are trying to decide what breakfast snack to have along with the coffee and tea at the morning break. After bic

SUNY Stony Brook - MAT - 125

Second Midterm ExamName:ELC3 R05 R10 R16 Josh Daniel Yoav Ari MW 6:50p M 11:45a W 9:35a Th 2:20p R01 R06 R11 R17 Yoav Samir Daniel Daniel M 9:35a Th 2:20p W 11:45a M 5:20p R02 R07 R12 R19 Samir Wenchuan Dezhen DezhenMAT 125, Fall 2004ID#:Th 12:

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UNC - DOCS - 2684

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UNC - DOCS - 2684

The Project Gutenberg EBook of Five Tales, by John GalsworthyThis eBook is for the use of anyone anywhere at no cost and withalmost no restrictions whatsoever. You may copy it, give it away orre-use it under the terms of the Project Gutenberg Li

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Honors Seminar 259 - cheat sheet for 12/3/2008 - Andrew BakerBarton & Harvey (2000) You should read all of the whole article except for the "Methods" section. Key questions: 1. What does "mosaic evolution" mean in the context of this article? 2. Wha

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Contents5 Generalized Decision Feedback Equalization 5.1 Information Theoretic Approach to Decision Feedback . . . . . . . . . . . . . . . 5.1.1 MMSE Estimation and Conditional Entropy . . . . . . . . . . . . . . . . 5.1.2 The relationship of the MM

Stanford - EE - 479

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Ball State - ENG - 103

ENG 103 Argument Paper Final Due: Nov. 14 Topic: You must choose a debatable topic, with specific practical applications. By `debatable,' I mean simply a topic for which there are opposing sides or viewpoints. By `practical applications,' I mean that

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vti_encoding:SR|utf8-nl vti_timelastmodified:TR|22 Aug 2007 18:02:44 -0000 vti_extenderversion:SR|5.0.2.6738 vti_backlinkinfo:VX|classes/ee415/Fall_2007/index.htm

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April 21 faculty workshopTo: Fr:Workshop Participants Liz MagillEnclosed are two documents. Both are pieces of a larger project-that I expect to be a book-that I have started while at Princeton. My goal is to come to terms with the health, safe