Joseph Steiner - Fall 2011
Romel Magwili - Spring 2013



Theory of Relativity and Time Travel


Note: All pictures have source website linked to them. Access this site by clicking on the image.


Albert Einstein

einstein_clerk-small.gif
Albert Einstein 1879-1955

Theory of Relativity - Factual Implications

Overview: A very simple single page article on Einsteins's Theory of Relativity. It Gives a brief history on the topic and also a general description on both of Einstein's Special and General Theories on Relativity. At the end of the article, the author goes on to explain how this concept supports the idea of creation. I can't attest to the validity or accuracy of this claim, however the basic information in reference to Einstein's theories and their applications are correct.
Author: Unknown
Last Updated: Unknown
Date Reviewed: Unknown
Reviewed By: Joseph Steiner
Accuracy: The information is very detailed about Einstein's theory.It gives a brief history of when he proposed it.
Readability and Clarity: The site is easy to read and clear about what the topic is although it is a little vague and gives only basic information.
Ease of Navigation: Only one page, no other navigation is needed.








Einstein's Theory

Theory Of General Relativity

Theory of General Relativity
Theory of General Relativity


Overview: This page talks about Einstein's theory of General Relativity. It gives some basic history as to how Einstein came up with the theory and also talks a little bit about Isaac Newton's theory of gravity. It gives explanations and examples of things that are tied with Einstein's theory such as gravitational lensing, Mercury's Orbit, frame-dragging, gravitational redshift and gravitational waves.
Author: Nola Taylor Redd
Last Updated: Unknown
Date Reviewed: 15 May 2013
Reviewed By: Romel Magwili
Accuracy: The information on this site is similar to many other sources and are accurate as to what Einstein's theory of general relativity means and states. It also gave examples and evidence that support Einstein's Theory.
Readability and Clarity: The article can be a bit confusing for someone without any background knowledge of the discussed material. Many terms and large words are used that some may not be familiar with. Although it is a tough concept to grasp, the statements are stated clearly and someone with some knowledge about the subject will find the information useful.
Ease of Navigation: All of the information is in one page and all that's needed is some scrolling down.


Theory of Relativity Made Easy
Overview: This is a visual aid regarding Einstein's Theory of Special Relativity
Author: Unknown
Last Updated: 28 July 2010
Date Reviewed: 15 May 2013
Reviewed By: Romel Magwili
Accuracy: The information presented in this video are detailed and agree with many other sources. This video presents many examples that help explain relativity
Readability and Clarity: The video is very clear and understandable, It is designed to help those with little knowledge about the material to understand Einstein's theory of relativity.
Ease of Navigation: The video automatically plays once the link is opened.


Putting Relativity to the Test
Image of Einstein's Cross
Image of Einstein's Cross

Overview: This site presents events that Einstein's theory predicted and gathers experiments and observation that support the claims. It shows when and how these predictions were observed by many different people from the past.
Author: Unknown
Last Updated: 22 November 1995
Date Reviewed: 15 May 2013
Reviewed By: Romel Magwili
Accuracy: The website is a little outdated, it mentioned that gravitational waves has not yet been detected while in reality, our technology today actually allowed us to measure disturbances in space-time.
Readability and Clarity: The website is clear, understandable and to the point. It is easy to understand what it is saying even without any background knowledge. Someone who is interested in knowing when Einstein's theories were first observed would find this information very useful.


Visualizing the Theory of Relativity

Albert Einstein's Theory of Relativity
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Fly-By at 99.9% Speed of Light
house_side_normal.gif
Fly-By at Normal Speed

Overview: This page is more so illustrative than informative. It would be a very good idea to take a look at the first link on this page before exploring this site. You need to have a base knowledge of Einstein's theory before you will would be able to fully understand what is happening to the right and the additional examples that can be found on this site.
Author: Unknown












Time Dilation
Time Dilation
gravity.gif
2D Slice Through 3D Space Demonstrating Spacetime Curve


Description: This website is extremely informative. Not only that but it is also fairly easy to read and gives easy to follow examples of the material being covered. Describes time dilation and then goes on to describe how it is that gravity and matter can be affect time and space in reference to time dilation. This is the only site I found that also has a section which takes a philosophical perspective on the matter.
Author: Thomas Knierim




Real World "Theoretical" Application

Mercury
mercury_precession.gif
Precession of Mercury's Orbit in Space Over Time


Description: Site built by students of another astronomy class. Compares Einstein's theories to Newton's. Explains why it is that Einstein's ideas are more accurate and uses Mercury to do so. In the process of discussing the Einstein vs. Newton, they give a pretty clear description of the time dilation of Mercury.
Author: Unknown







Black Hole - Event Horizon
Black_hole_lensing_web.gif
Black Hole Lensing Demonstrating Event Horizon


Description: Very basic information. Gives a description of how the strong gravity of a black hole bends space-time and how the information gathered from Einstein's theories applies to the event horizon of a black hole. Basically takes the information we gathered above and gives an example of what would happen in reference to a black hole and space-time.
Author: Andrew Zimmerman Jones and Daniel Robbins







Frame Dragging
Warped View of Space

spacetime-frame-dragging-expected
spacetime-frame-dragging-expected

Overview: This page gives information about frame dragging. It talks about what it is and how it works "theoretically". It mentioned Physicists who worked based on Einstein's theory of relativity and the recent findings that support his claims. It also talks about its application to Black Holes and when the effects were first observed.
Author: Robert Roy Britt
Last Updated: 20 October 2004
Date Reviewed: 15 May 2013
Reviewed By: Romel Magwili
Accuracy: The information on this site is similar to many other sources but with my lack of knowledge and familiarity with this subject matter, i cannot completely say that this information is completely accurate.
Readability and Clarity: The article is clear and easy to read, any statement that involved unfamiliar terms is well explained. Anyone, including those who do not have any background knowledge, will find the information useful.
Ease of Navigation: All of the information is given on one page making it very easy to navigate.


Frame Dragging Video
Overview: This is a video that provides visual aid to further understanding the effect of frame dragging
Author: Unknown
Last Updated: 2007
Date Reviewed: 15 May 2013
Reviewed By: Romel Magwili
Accuracy: The information on this site is similar to many other sources but with my lack of knowledge and familiarity with this subject matter, i cannot completely say that this information is completely accurate.
Readability and Clarity: The video is well explained and easy to understand.
Ease of Navigation: One page, no need to navigate anywhere.


Gravitational Waves

On The Edge: Gravitational Waves

artist concept of LISA
artist concept of LISA


Overview: This website provides basic information on gravitational waves. It answers questions such as what it is, where it comes from, how we can detect it, and what we learn from them. It also gives background information on Einstein's General Relativity to help understand gravitational waves by using models and examples.
Author: Unknown
Last Updated: August 2003
Date Reviewed: 15 May 2013
Reviewed By: Romel Magwili
Accuracy: The information is very detailed, giving many examples and explanations to questions regarding gravitational waves. Information on this page also agree with other sources available.
Readability and Clarity: The text is very clear and understandable. It is written to help those with little knowledge about the information understand the concept of gravitational waves.
Ease of Navigation: All of the information is presented in a single page, all that is needed is some scrolling.


Gravity: Space-time Warp
Overview: A short video about gravitational waves emitted from a binary star system of a hyper-dense neutron star and a white dwarf.
Author: Unknown
Last Updated: Unknown
Date Reviewed: 15 May 2013
Reviewed By: Romel Magwili
Accuracy: This video provides a visual aid of the information that are also presented in many other sources.
Readability and Clarity: The video is helpful for those who have some background information regarding gravitational waves. It is a good aid to further help understand the concept. It presents clear statements and explanations.
Ease of Navigation: The video automatically plays once the link is opened, no further navigation is needed.



Gravitational Redshift

A Thought-Experiment Involving Gravitational Redshift

external image redshift.gif

Overview: This site provides a quick explanation of what gravitational redshift is and provides a follow up experiment to explore the existence of the effect.
Author: Erik Max Francis
Last Updated: 01 January 2013
Date Reviewed: 15 May 2013
Reviewed By: Romel Magwili
Accuracy: This cite is newly updated and provides a detailed mathematical experiment that demonstrates the existence of gravitational redshift.
Readability and Clarity: The site explains the effect of redshift very well, but it goes on into more advance and complicated calculations that may only be understood by well rounded mathematicians and physicists.
Ease of Navigation: All information is presented on the first page, no further navigation is necessary.





Relativity for kids to better understand:

external image einstein.jpg
http://www.ducksters.com/science/physics/theory_of_relativity.php

Overview: This article helps break down the complex theory of relativity and helps younger teens and kids understand it better
Author: Unknown
Last Updated: 12/2016
Date Reviewed: December 8, 2016
Reviewed by: Nicholas Ackley
Accuracy: This article is accurate, it is information to help those who don't have a clear understanding of the theory of relativity.
Readability and Clarity: Very easy to read and can get through it in about twenty minutes. This way of learning it helps you better understand it without getting into the need greedy.
Ease of Navigation: All information found on the first page, no further navigation is necessary.