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Re: velocity and time

From Odd Bodkin <bodkinodd@gmail.com>
Newsgroups sci.physics.relativity
Subject Re: velocity and time
Date 2017-02-10 14:14 -0600
Organization Aioe.org NNTP Server
Message-ID <o7l6vp$l5h$1@gioia.aioe.org> (permalink)
References <f19d35cd-0ac1-441c-8846-f870fb2c1acf@googlegroups.com>

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On 2/10/2017 1:30 PM, Robert Winn wrote:
> To show the difference between the two concepts,
[velocity and speed]

The difference between velocity and speed is simple.
Velocity is a vector and speed is a scalar, in fact the scalar magnitude 
of the vector velocity.

Vectors have magnitude and direction, and in 3D space specifying a 
direction requires two numbers, such as azimuth and elevation angles. 
Thus in general in 3D space it requires 3 numbers to specify the vector. 
What those numbers represent depends on the coordinate system (or if you 
want, the basis vectors chosen). Magnitude, elevation and azimuth are 
one possibility. Another set involves x, y, z coordinates, which are the 
projections of the vector onto an orthonormal basis vector set. If the 
vector is constrained to one dimension, then only one signed number is 
needed to specify the vector, and the speed is the absolute value of 
that signed number.

In spacetime, by the way, there are four coordinates needed to specify 
an event. Again, what those four numbers are depend on the type of 
coordinate system chosen.


-- 
Odd Bodkin -- maker of fine toys, tools, tables

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velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 11:30 -0800
  Cretin Robert Winn continues to spam "Dono," <sa_ge@comcast.net> - 2017-02-10 11:52 -0800
    Re: Cretin Robert Winn continues to spam Robert Winn <rbwinn3@gmail.com> - 2017-02-10 12:21 -0800
  Re: velocity and time Python <python@python.invalid> - 2017-02-10 21:08 +0100
    Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 12:34 -0800
  Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-10 14:14 -0600
    Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 12:36 -0800
      Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-12 15:15 -0600
        Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-12 16:37 -0800
          Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-13 07:24 -0600
            Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-13 06:45 -0800
              Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-13 09:14 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-13 08:14 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-15 08:39 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-13 08:21 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-14 06:43 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 06:44 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-14 11:25 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 13:32 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-14 15:42 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 17:58 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-15 03:21 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 18:24 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-15 03:36 +0100
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-15 08:43 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-15 07:19 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-17 08:07 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 09:05 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-17 11:20 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 10:51 -0800
                Re: velocity and time John Gogo <jfgogo22@yahoo.com> - 2017-02-17 18:16 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-15 08:41 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-15 07:16 -0800
    Re: velocity and time John Gogo <jfgogo22@yahoo.com> - 2017-02-10 16:04 -0800
      Re: velocity and time "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-10 16:11 -0800
        Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 17:09 -0800
      Re: velocity and time John Gogo <jfgogo22@yahoo.com> - 2017-02-10 16:13 -0800
        Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 17:11 -0800
          Re: velocity and time "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-10 20:36 -0800
            Re: velocity and time "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-10 20:40 -0800
              Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 22:17 -0800
            Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 22:16 -0800
      Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 16:59 -0800
        Re: velocity and time John Gogo <jfgogo22@yahoo.com> - 2017-02-10 17:18 -0800
          Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 17:36 -0800
  Re: velocity and time dancouriann@gmail.com - 2017-02-10 15:32 -0800
    Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 16:57 -0800
      Re: velocity and time dancouriann@gmail.com - 2017-02-10 18:07 -0800
        Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-10 23:03 -0800
          Re: velocity and time stringduality@gmail.com - 2017-02-11 05:38 -0800
            Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-11 07:32 -0800
          Re: velocity and time dancouriann@gmail.com - 2017-02-11 06:30 -0800
            Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-11 07:46 -0800
              Re: velocity and time dancouriann@gmail.com - 2017-02-11 09:41 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-11 10:43 -0800
                Re: velocity and time dancouriann@gmail.com - 2017-02-11 11:51 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-11 12:13 -0800
                Re: velocity and time dancouriann@gmail.com - 2017-02-11 14:36 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-11 21:31 -0800
                Re: velocity and time dancouriann@gmail.com - 2017-02-11 21:52 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-12 07:11 -0800
                Re: velocity and time dancouriann@gmail.com - 2017-02-12 08:38 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-12 10:10 -0800
                Re: velocity and time dancouriann@gmail.com - 2017-02-12 10:42 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-12 16:28 -0800
                Re: velocity and time dancouriann@gmail.com - 2017-02-12 17:30 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-12 23:15 -0800
                Re: velocity and time dancouriann@gmail.com - 2017-02-13 17:12 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 06:19 -0800
                Re: velocity and time "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-14 07:01 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 13:30 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-14 14:28 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 18:22 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-15 03:42 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 23:08 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-15 15:19 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-15 07:07 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-17 07:53 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 08:47 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-17 11:28 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 11:03 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-18 10:57 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 13:19 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-18 15:30 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 14:54 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-19 14:25 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 15:12 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-19 14:42 -0600
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-18 11:10 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 13:28 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-18 15:32 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 15:16 -0800
                Re: velocity and time mlwozniak@wp.pl - 2017-02-12 23:20 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-13 07:25 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-13 06:47 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-13 09:20 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-13 08:05 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-14 06:43 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 06:48 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-14 11:26 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-14 18:01 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-15 14:59 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-15 14:28 -0800
                Re: velocity and time Gary Harnagel <hitlong@yahoo.com> - 2017-02-15 20:19 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-16 00:24 -0800
                Re: velocity and time Gary Harnagel <hitlong@yahoo.com> - 2017-02-16 05:53 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-16 06:39 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-16 16:32 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-16 11:15 -0800
                Re: velocity and time Gary Harnagel <hitlong@yahoo.com> - 2017-02-16 08:07 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-16 11:08 -0800
                Re: velocity and time Gary Harnagel <hitlong@yahoo.com> - 2017-02-16 12:09 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-16 21:18 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-16 15:24 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-16 15:22 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-16 06:39 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-17 08:35 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 09:55 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-17 12:25 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 11:08 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-17 13:14 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 14:10 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-18 11:10 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 13:34 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-19 14:25 -0600
                Re: velocity and time Poutnik <poutnik4nntp@gmail.com> - 2017-02-18 09:55 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 06:32 -0800
                Re: velocity and time Poutnik <poutnik4nntp@gmail.com> - 2017-02-18 16:24 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 09:02 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-18 18:10 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 13:47 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-19 04:44 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-18 22:59 -0800
                Re: velocity and time Gary Harnagel <hitlong@yahoo.com> - 2017-02-19 04:51 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-19 07:30 -0800
                Re: velocity and time Gary Harnagel <hitlong@yahoo.com> - 2017-02-19 10:06 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-19 11:11 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-19 15:47 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-19 07:32 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-19 16:53 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-19 11:02 -0800
                Re: velocity and time Poutnik <poutnik4nntp@gmail.com> - 2017-02-18 18:36 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 10:50 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-17 13:17 -0600
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-17 13:19 -0600
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 14:11 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-17 21:01 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 14:13 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-18 00:35 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 18:55 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-18 04:09 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 21:09 -0800
                Re: velocity and time John Gogo <jfgogo22@yahoo.com> - 2017-02-17 18:35 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 19:01 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-18 04:13 +0100
                Re: velocity and time John Gogo <jfgogo22@yahoo.com> - 2017-02-17 18:37 -0800
                Re: velocity and time Python <python@python.invalid> - 2017-02-18 04:03 +0100
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-17 19:08 -0800
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-19 14:25 -0600
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-12 15:47 -0600
                Re: velocity and time Odd Bodkin <bodkinodd@gmail.com> - 2017-02-12 15:46 -0600
  Re: velocity and time Ed Lake <detect@newsguy.com> - 2017-02-11 07:46 -0800
    Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-11 07:55 -0800
      Re: velocity and time Ed Lake <detect@newsguy.com> - 2017-02-11 09:01 -0800
        Re: velocity and time Ed Lake <detect@newsguy.com> - 2017-02-11 09:08 -0800
        Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-11 10:31 -0800
          Re: velocity and time Ed Lake <detect@newsguy.com> - 2017-02-11 12:15 -0800
            Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-11 20:54 -0800
              Re: velocity and time Ed Lake <detect@newsguy.com> - 2017-02-12 08:51 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-12 10:12 -0800
                Re: velocity and time Ed Lake <detect@newsguy.com> - 2017-02-12 12:06 -0800
                Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-12 16:35 -0800
  Re: velocity and time numbernumber1964@gmail.com - 2017-02-11 15:04 -0800
    Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-11 21:46 -0800
  Re: velocity and time numbernumber1964@gmail.com - 2017-02-11 15:05 -0800
  Re: velocity and time numbernumber1964@gmail.com - 2017-02-12 11:31 -0800
    Re: velocity and time Robert Winn <rbwinn3@gmail.com> - 2017-02-12 16:31 -0800

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