Geography 1400F/G Chapter 1: Chapter 1 Summary and Definitions for Human Geography Text

179 views3 pages

coppergoat35

10 Jan 2012

School

Department

Course

Professor

For unlimited access to Textbook Notes, a Class+ subscription is required.

Document Summary

Geography is about earth space and its physical and cultural context. Throughout geography s long history it has remained consistently focused on human-environmental interactions, the interrelatedness of places, and the likenesses and differences in physical and cultural content of area that exist from place to place. The collective interests of geographers are summarized by the spatial and systems analytical questions they ask. The responses to those questions are interpreted through basic concepts of space and place, location, distance, direction, content evolution, spatial interaction, and regional organization. In their study of the earth s surface as the occupied and altered space in which humans operate geographers may concentrate on the integration of physical and cultural phenomena in a specific earth area (regional geography) They may instead emphasize systematic geography through the study of the earth s physical systems of spatial and human concern or as here devote primary attention to people.

Related Questions

an angular distance measured north or south of the equator from the center of earth is termed

) Geography is described as
A) an Earth science.
B) a human science.
C) a physical science.
D) a spatial science.

yellowdog130

(1) We want to consider an atomic system containing two electrons.For now, we will consider that the electrons do not interact witheach other through the repulsive Coulomb interaction and we willneglect all interactions explicitly involving spin, such as thespin-orbit interaction. We can then write the one-electron-atomeigenfunctions as a product of a spatial function and a spinfunction in the form,
?nlmlms =?nlmlsms,
where the sigma function is the spin eigenfunction, the exactrepresentation of which you will not need. For an electron labeledby 1, applying our formalism in class, this can be expressed in theform,
?a(1)=?a(1)smsa (1), where a represents both the spatial and spinquantum numbers and a represents only the
spatial quantum numbers. Two-electron product eigenfunctions can bewritten in the form,
?aÃ = ?a (1)?Ã (2)= ?a (1)?b (2)smsa (1)smsb (2), and, finally, inthe more compact notation that we adapted in class,
?aÃ=?absms ms . ab
Of course, this is not an acceptable total eigenfunction for ourtwo-electron system since it is not antisymmetric with respect toan interchange of the electron labels.

(a) Write down both symmetric and antisymmetric forms for thespatial, two-electron eigenfunctions.
(b) Do the same for the spin, two-electron eigenfunctions,remembering that ms can assume the two values + 1/2 and â1/2.
(c) Now write down all of the antisymmetric total, two-electroneigenfunctions formed by the products. Label the eigenfunctionsthat are spatially symmetric with the letter s and those that arespatially antisymmetric with the letter t. These two-electron,total eigenfunctions are degenerate under our initial assumptions.

During your biking tour of the Pacific Northwest, you decidetooutdo those latte-guzzling ecotopians at their own game. Insteadofthe four toxic and disposable 1.5-volt batteries suggested foryourwalkabout CD player, you will place a 2.0 m conductingwandacross your handlebars. Pedaling furiously in adirectionperpendicular to the local magnetic field, you wish to gofastenough to induce a potential difference of 6.0 V (equivalenttofour batteries in series). (a) The strength of the Earth'smagneticfield at your location is 5.0Ã10â5 T. Howfast will you need to go?(b) Is this speed street-legal? (c) Themagnetic declination at yourlocation is 19Â°. At what anglefrom geographic north should youtravel to maximize the potentialdifference of yourenvironment-friendly arrangement?

Geography 1400F/G Chapter 1: Chapter 1 Summary and Definitions for Human Geography Text

Document Summary

Get access

Related Documents

Geography 1400F/G Lecture Notes - Lecture 1: Human Geography, Spatial Analysis, Statistical Hypothesis Testing

Geography 1400F/G Lecture Notes - Lecture 1: Human Geography, Spatial Analysis, Statistical Hypothesis Testing

Geography 1400F/G Midterm: Geography 1400 Midterm Notes

Related Questions