旋转坐标纸上的相对性
Relativity on Rotated Graph Paper
摘要:
我们在狭义相对论中使用绘制在旋转45度的坐标纸上的时空图来进行可视化计算。旋转的线代表闵可夫斯基时空中的类光方向,网格中的方框(称为“光钟菱形”)代表以惯性观察者光钟的滴答为模型的测量单位。我们表明,许多定量的结果可以读出的时空图计数盒,使用最小量的代数。我们使用的多普勒效应,在邦迪k-演算的精神,激励的方法。
英文摘要:
We present visual calculations in special relativity using spacetime diagrams drawn on graph paper that has been rotated by 45 degrees. The rotated lines represent lightlike directions in Minkowski spacetime, and the boxes in the grid (called "light-clock diamonds") represent units of measurement modeled on the ticks of an inertial observer's lightclock. We show that many quantitative results can be read off a spacetime diagram by counting boxes, using a minimal amount of algebra. We use the Doppler Effect, in the spirit of the Bondi k-calculus, to motivate the method.
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