On 2/4/2025 9:02 PM, Alan Grayson wrote:


On Tuesday, February 4, 2025 at 9:51:30 PM UTC-7 Brent Meeker wrote:

    You need to describe things in a single coord system in order to
    model interactions between them.

    Brent


But if garage frame spacetime coordinates x, t, and car frame has spacetime coordinates x', t', and the plot represents the situation from the pov of garage frame, how can the car be plotted using x, t, when those coordinates aren't its spacetime coordinates? AG
The primed and unprimed coordinates of a given point are related by the Lorentz transformation, (t,x) and (t',x') are the same point just plotted in different coordinates.

Brent

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