AnnabelBuxton

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Hello, AnnabelBuxton, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful:

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PC

[1] - Kittybrewster 22:11, 13 March 2007 (UTC)

Who's Who

Greetings. Would you be so kind as to bring some of the comments you made here regarding Who's Who to the discussion here? Thank you! Laura1822 16:15, 15 March 2007 (UTC)

Hello

A rather pointless discussion which you might be interested in adding to: here.--Major Bonkers (talk) 15:28, 27 April 2007 (UTC)

Inertial frame of reference

From Talk:Twin paradox,

"There is no such thing as AT REST, objects can only be at rest in relation to a particular frame of reference."

Okay, but

"There is no such thing as a frame of reference which is inertial or not in absololutum. Frames can only be inertial or not (moving at constant velocity) relative to each other"

Huh? "An inertial reference frame is one in which Newton's first and second laws of motion are valid." I.e. in which objects have constant velocity, unless acted upon by some force. There's no need to compare a frame to another to see whether it's inertial.
—wwoods 15:06, 25 May 2007 (UTC)

Hmmm - the definition perhaps informal that I had in mind was an inertial frame is a frame in uniform motion (the 'enclosed box moving uniformly' that the article you link to mentions). So my point was moving uniformly relative to what. If a frame is moving non-uniformly relative to me then I won't observe Newton 1 and 2 as holding in that frame and someone in that frame won't observe Newton 1 and 2 as applying in my frame. However someone IN that frame WILL observe Newton 1 and 2 as applying in that frame surely? Isn't every frame inertial for someone in that frame? Otherwise there must be something privilidged about the earth bound frame for it to be intertial. So I think I frame is inertial or not (i.e. Newton 1 and 2 applies or not) depending on its relative motion to the observer. If it is not moving with constant motion relative to me then the velocities of objects in that frame that I observe will change due to the non-uniform motion without a force AnnabelBuxton 19:44, 25 May 2007 (UTC)