Back to Home

God & Science Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | God and Science | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
In Physics Time Is A Coordinate, Not A Dimension.

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Alexander on October 10, 2001 16:34:54 UTC

And it is important to understand the difference (most don't). The difference is that you can move back and forth in space (in depth, width, etc), but not in time.Time is NOT a degree of freedom. If you doubt - just write down the equation of motion in time (say, velocity or acceleration, etc) - there is NONE.

Anyone who studied physics knows that fact. This is why in SR, GR, QM, QED, field theories, etc, a time coordinate is ALWAYS separated from space coordinates by using imaginary axis. It is mathematical convinience to compactify and simplify long relationships thus to include everything in one equation.

By the way, Kyle, we studied Lorents transforms, proper length and proper time back in high school, so I know them well. You is the one to learn basic physics to see why time travel is impossible.

Follow Ups:

Login to Post
Additional Information
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2024 John Huggins All Rights Reserved
Forum posts are Copyright their authors as specified in the heading above the post.
"dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
are trademarks of John Huggins