Colliding Galaxies
The Colliding Galaxies Model is an implementation of Alar and Juri Toomres' 1972 super computer model showing the formation of galactic bridges and tails under the assumption that galactic cores are point masses and that one galactic core is surrounded by 2D concentric rings of orbiting stars. The model assumes is that the stars (test particles) orbiting the galactic cores are non-interacting. When the two galaxies pass one another, tidal forces deform the star distribution into classic tidal fe
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Kay Redfield Jamison on her book Exuberance - 2004
Kay Redfield Jamison discusses her book Exuberance: The Passion for Life - 2004
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223 GG Is a Troop One Person or a Group?
Is a "troop" and individual soldier, group of soldiers, or both? Get tips on how to properly use the word "troop." The Grammar Girl print book is now available on Amazon.com! http://tinyurl.com/2pkej7
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adler 024 a part 1 re-uploaded
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Igneous Rocks of the Convergent Margins
This set of lecture notes discusses the occurrence and tectonic settings of igneous rocks near convergent plate margins. A discussion of petrography includes major element composition, calc-alkaline trends in ternary diagrams, trace element variations, isotopes to distinguish magma sources, and the ...
Author(s): Stephen Nelson

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Metamorphic Rock Textures
These lecture notes discuss metamorphic textures and the mechanisms that create them. A discussion of foliation covers types of stress and the development of foliated rocks from slate to gneiss. Five modes of metamorphic differentiation are introduced including preservation of original compositional ...
Author(s): Stephen Nelson

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Microscopy and Minerals Images
This site is devoted to microscopic images of minerals, thin sections of rocks and meteorites, and stereoscopy of minerals. The site is organized into the following categories: meteorites, plutonic rocks, volcanic rocks, carbonates, sedimentary rocks, sedimentary rocks and diatoms. Other links include ...
Author(s): J Derochette

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Stable Mineral Assemblages in Metamorphic Rocks
This 81-slide PowerPoint presentation reviews the phase rule in terms of metamorphic systems, using the brucite-periclase system as an example. Binary and ternary chemographic diagrams are used to explain compatibility in mineral assemblages. The presentation covers ternary diagrams for complicated systems, ACF and AKF diagrams, projections from apical phases, and J.B. Thompson's A(K)FM diagram is used as an alternative tool to apply to pelitic rocks. Lastly, a set of rules is laid out to help c
Author(s): John Winter

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Super Space
How does knowing how far away a star is or the size of a galaxy benefit life on earth? It is not uncommon for students to question the value of space exploration. This publication will assist you in helping your students acquire an accurate concept of and an appreciation for space exploration.
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102 - BELLUM HELVETICUM - LOWE BUTLER WALKER
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Why do black holes have such strong gravity?
This is a live video chat.  The narrator was asked, “Why do black holes have such stronger gravity than the stars they formed from?”  Here's the answer, gravity depends upon two things, the mass of the object and how far away you are from it.  The mass of a star when it collapses the core forms a black hole, so now you can get closer to it and the gravity draws you in.  Video is somewhat confusing - the narrator speaks fast and may be hard
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Hideout Hollow - Exploring Arkansas (AETN)
Arkansas Educational TV publication. In this episode the narrator takes a hike to the storybook setting of Hideout Hollow in the upper portion of the Buffalo National River near Compton. One of the focal points of the hike is a bluff shelter down in the hollow. The plants and greenery is what people love to see on this hike, the falls are also beautiful.  Video is good quality and has information for students studying this area of the United States.
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Kansas State Flag and Kansas State Song
Five Star Flags presents the Kansas flag flying against the blue sky, with "Home on the Range" playing in the background. "Home on the Range" is the Kansas state song.
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003 CAESAR BELLO GALLICO BILINGUAL
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006 CAESAR BILINGUAL BELLO GALLICO
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013 CAESAR BILINGUAL BELLO GALLICO
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005 Bilngual Aesop - Rossi
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Elizabeth I - Documentary Part 13
This part of the documentary narrates Elizabeth's relationship with the French Duke of Anjou. She is said to have fallen in love with this 20-year-younger Catholic man. There was high opposition. There was oppositon propaganda and the authors were punished. The Privy council discussed the marriage but no decision was taken so Elizabeth did no marry. Mary of Scots was still in prison after 11 years.
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Critics and Challenges to the New Deal
During the Great Depression, America was searching for solutions. Because of this, people with radical opinions, who in better times would have been ignored, were able to capture the attention of the nation. Some made valuable contributions by presenting new ideas for debate. Others seemed to be merely obstructionist complainers or even rabble rousers just trying to make trouble. The majority, however, seemed to fall in an intermediate category of outspoken people who had many valid objections,
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