Abstract
In a recent paper, it was demonstrated that the popular legend that scissors can cut paper at super luminal speeds is indeed correct. In this comment, we make this additional observation that when the cutting speed is super luminal, the direction of the cutting of the paper as observed by observers in the inertial frame stationary with respect to the blade of the scissors and the direction of the cutting of the paper as observed by observers in the inertial frame stationary with respect to the paper are opposite. This follows from the relativity of simultaneity, and the fact that space-time points that are separated beyond reach at sub-luminal speeds exhibit a reversal in time order as observed by different inertial frames. The fact that the paper was cut in opposite directions as observed by the paper and scissors can be interesting facet for students of physics.
Highlights
In a closely related paper [3], examining the rod-slot paradox, we have shown that the leading edge of the rod enters the slot first as observed by the rod, and the trailing edge of the rod enters the slot first as observed by the slot
In a recent paper [1] it was demonstrated that scissors can cut paper at super luminal speeds
We have shown [2] that two inclined rods moving towards each other will collide in such a way that the bottom edge will collide first and the top edge later, as observed by inertial frame co-moving with one rod and vice-versa as observed by inertial frame co-moving with the other rod
Summary
In a closely related paper [3], examining the rod-slot paradox, we have shown that the leading edge of the rod enters the slot first as observed by the rod, and the trailing edge of the rod enters the slot first as observed by the slot. In a recent paper [1] it was demonstrated that scissors can cut paper at super luminal speeds.
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