# T

Figure 4 Computer plot Worldline of r versus fra|n for a rain observer (one who falls from rest at infinity) The zero of rain time is set arbitrarily at the event of coincidence between the in-falling observer and the spherical shell atr = 5M (open circle on the horizontal axis). For other choices of zero time the curve can be moved bodily up or down on the graph without change of shape.

Figure 4 Computer plot Worldline of r versus fra|n for a rain observer (one who falls from rest at infinity) The zero of rain time is set arbitrarily at the event of coincidence between the in-falling observer and the spherical shell atr = 5M (open circle on the horizontal axis). For other choices of zero time the curve can be moved bodily up or down on the graph without change of shape.

dt, rain

Inside the horizon (r < 2M), this raindrop speed certainly takes on a magnitude greater than unity, greater than the speed of light. This argument proves that we have finally broken the light barrierâ€”that inside the horizon the rain observer moves faster than light

YES argument 2:

QUERY 4 Wristwatch time to the center proves it. Compare the radius of the horizon to the wristwatch time for the rain observer to fall from horizon to center. Show that the ratio of the two represents an average speed greater than unity, greater than the speed of light. Recall Query 1, part D.

YES argument 3: