JamesF

The Theory of Relativity is a complicated yet understandable topic that includes the essence of gravity, time and space intervals, and how the results are dependent on one’s **//p//**oint //**o**//f //**v**//iew. media type="youtube" key="AZ6N85lNgHY" height="344" width="425" Background info/ evidence pieces · P.o.v.- any object is a reasonable frame of reference on which to base the view point · Time/ space- ray of light moves at 300,000 km/s · Time/ space- system of coordinates · Einstein develops theory of general relativity in 1915 say that there is no such thing as absolute rest in the universe meaning that everything is moving all of the time · Gravitational acceleration is 9.8m/s squared (on earth) ·   Objects move relatively to each other considering a constant velocity  FRAME OF REFERENCE In Einstein's eyes, no object can be considered as an absolute frame of reference that is at rest with respect to space. Einstein says that all motion is relative. "Einstein stated the relative rate of motion between any observer and any ray of light is always the same, 300,000 km/sec (186,000 mi/sec), and thus two observers, moving relative to one another even at a speed of 160,000 km/sec (100,000 mi/sec), each measuring the velocity of the same ray of light, would both find it to be moving at 300,000 km/sec (186,000 mi/sec), and this was the result was proved by the Michelson-Morley experiment." (Relativity MSN Encarta). ESSENCE OF GRAVITY
 * [[image:http://photoaddiction.net/images/20070704162641_m-2004-08-20.jpg width="781" height="419" caption="speed of light... does the station pass the train or does the train pass the station?"]] ||
 * [[image:http://www.ecreationscience.com/images/No%20Gravity.jpg width="797" height="394" caption="gravity exists"]] ||

Einstein's law of gravity explains that the world line of every object is a "geodesic." A geodesic is the smallest distance between two points, which is not always a straight line. As for equivalence, it is the forces produced by gravity that are in every way equivalent to forces produced by acceleration, thus it is theoretically impossible to distinguish between gravitational and accelerational forces.

TIME AND SPACE INTERVALS __The question still remains... does the station pass the train or does the train pass the station__ The theory of relativity was founded by the now world renound physicist, Albert Einstein. This is the foundation for the essential unity of matter and energy, of space and time, and of the forces of gravity and acceleration. it is not possible to find exact time when an event happens without a reference to the place it occured. Each and every particle in the galaxy has a "world line" that describes its position in time and space. To recap, the essence of gravity, time and space intervals, and the view point all play into the ending result of how one could look at the theory of relativity.

//WORKS CITED:// Bornstein, Lawrence A. "Relativity." //Microsoft® Encarta® Online Encyclopedia// //2008. 1//997-2008 Microsoft Corporation. .

Annotation: This website was an informative site that completely explained all about the general and special theories of relativity. This is a reliable souce because MSN Encarta is an Encyclopedia that is online which is also an organization that is redound around the globe and owned by the Microsoft Corporation. "Einstein's Special Theory of Relativity E=mc2 speed of light." //YouTube, LLC.// 8 August 2007. .

Annotation: This is a useful visual and audio aid that explains in detail about the special theory of relativity. This video was embedded from youtube. Also it is reliable and credible to utilize as it was posted by a college university's physics department. Lightman, Alan. "Relativity (Lightman Essay)." //NOVA.// 2005. PBS. 14 February 2009.  <span style="font-size: 70%; font-family: Arial, Helvetica, sans-serif;">.

Annotation: NOVA/ PBS websites are a wealth of knowledge regarding the time and space relationship. And they are well-known organizations that aid in educational topics and resources. Alan Lightman is a previous MIT professor who studied physics and the theory of relativity closely.

Orff, Carl. "O Fortuna." //Carmina Burana.// 2008. imeem, Inc. 16 February 2009. <http://www.imeem.com/people/mtfcEW/music/ngnzi_JY/carl_orff_o_fortuna/>. Annotation: I added this famous classical song just to liven up the page. It also fits in well with the topic's mood I think.

<span style="font-size: 110%; font-family: Arial, Helvetica, sans-serif;">14 February 2009. <span style="font-size: 110%; font-family: Arial, Helvetica, sans-serif;">< <span style="font-size: 120%; font-family: Arial, Helvetica, sans-serif;">http://photoaddiction.net/images/20070704162641_m-2004-08-20.jpg  <span style="font-size: 80%; font-family: Arial, Helvetica, sans-serif;"> >. <span style="font-size: 110%; font-family: Arial, Helvetica, sans-serif;">Annotation: Picture of the speed of light (train station) 14 February 2009. <http://www.ecreationscience.com/images/No%20Gravity.jpg>. Annotation: Picture of Gravity; a boy falling media type="custom" key="3163442" width="37" height="32"