Jump to content

File:Carframe.gif

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Carframe.gif (360 × 188 pixels, file size: 224 KB, MIME type: image/gif, looped, 41 frames, 7.0 s)

Summary

Description Map and car frame perspectives of proper (red) and geometric (blue) accelerations for an automobile driving from one stop sign to the next.
Date
Source Own work
Author P. Fraundorf

Added notes

Two views of gravity's acceleration.

Note that from the map frame, we only see the (red) proper-accelerations experienced due to speed-up and braking forces of the car on its passengers. In the accelerated/decelerated car-frame, on the other hand, those proper-forces seem to be balanced by inertial (kinematic or geometric) forces (associated with blue vectors) that act on every ounce of the passengers e.g. pushing them into the seat as the car speeds up.

The animation at right illustrates that (blue) gravitational accelerations, like those inertial forces in the figure above, act on every ounce of a traveler from our "shell frame" point of view, but vanish altogether in the free-float-frame of a pop-up fly-ball. The only (red) proper forces in the free-float-frame arise when our object is in contact with the ground. In this way general relativity explains gravitational acceleration as an affine-connection (kinematic or geometric) effect caused directly by the fact that time passes faster with increasing altitude.

Footnotes


Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International, 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You may select the license of your choice.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

12 March 2008

image/gif

b90dbf34cb64a925f28e9008b9630688145ce1df

229,358 byte

6.969999999999998 second

188 pixel

360 pixel

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current20:46, 12 March 2008Thumbnail for version as of 20:46, 12 March 2008360 × 188 (224 KB)Unitsphere
17:16, 12 March 2008Thumbnail for version as of 17:16, 12 March 2008360 × 188 (224 KB)Unitsphere{{Information |Description=Map and car frame perspectives of proper (red) and geometric (blue) accelerations for a car driving from one stop sign to the next. |Source=self-made |Date=12 March 2008 |Author= P. Fraundorf |Permission=see below |other_version

Global file usage

The following other wikis use this file: