## ScienceDaily: Relativity and the twin’s paradox

September 24, 2010 by

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ScienceDaily (Feb. 15, 2007) — Subhash Kak, Delaune Distinguished Professor of Electrical and Computer Engineering at LSU, recently resolved the twin paradox, known as one of the most enduring puzzles of modern-day physics.

## ScienceDaily: Relativity and time dialation works in daily life

September 24, 2010 by

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Scientists have known for decades that time passes faster at higher elevations, and more slowly when you move faster, curious aspects of Einstein's theories

## Interactive tool: How does a function releate to its Derivative and Integral (PhET / UC Boulder)

August 26, 2010 by

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Interactive tool for showing how derivatives and integrals relate to a graph of a function. Really great for experimenting with the meaning of basic calculus ideas. Intuitive and graphical. Spend a little time playing to see where the derivative is zero, positive, negative, or how the integral grows. Draw a graph of any function and see graphs of its derivative and integral. Don't forget to use the magnify/demagnify controls on the y-axis to adjust the scale.

August 23, 2010 by

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Downloadable simulation of how the sine and cosine functions are made from rotation through a circle. Get a feel for how trig functions relate to coordinates and lengths. Imagine a point that starts at and rotates counterclockwise on the unit circle. If is the length (in radians) of the arc on the circle between and the point, then as the point moves around the circle its and coordinates are the cosine and sine of .

August 23, 2010 by

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Downloadable simulation of how two vectors add using arrows and using components. This Demonstration illustrates head-to-toe addition of vectors in the coordinate plane. Initial and terminal ends of the vectors can be located in an [-8, 8] by [-8, 8] window.

July 26, 2010 by

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If you are unable to find the answers you are looking for on this blog, or feel that you need more help succeeding in your course than is available here, do not hesitate to contact the Center for Academic Achievement right away! Contacts: CFAA Main Number: 439-7849 Science Support: science@goldmail.etsu.edu

## Welcome to the CFAA Science Blog

July 26, 2010 by

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The purpose of this blog is to support ETSU undergraduates enrolled in science courses. Search the blog to find answers to your questions, or post a question or comment to get feedback from a tutor in the Center for Academic Achievement! We will be adding articles to this blog regularly beginning September 1, 2010. We […]