What Happens When You Pull a 5-Light-Second Ribbon?

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SUMMARY

The discussion centers on the theoretical implications of pulling a 5-light-second-long unstretchable ribbon connected to a laser beam. The primary conclusions indicate that according to the principles of relativity, unstretchable rigid objects cannot exist. Therefore, if one were to pull the ribbon, the observer would not see the laser turn on instantaneously or faster than light; instead, the interaction would propagate at the speed of light, confirming the limitations set by the theory of relativity.

PREREQUISITES
  • Understanding of Einstein's theory of relativity
  • Familiarity with concepts of light speed and information transfer
  • Basic knowledge of physics regarding rigid body mechanics
  • Awareness of the implications of non-locality in physics
NEXT STEPS
  • Research Einstein's theory of relativity and its implications on rigid bodies
  • Explore the concept of information transfer in quantum mechanics
  • Investigate the nature of light speed as a universal constant
  • Study the implications of non-locality and entanglement in physics
USEFUL FOR

This discussion is beneficial for physicists, students of theoretical physics, and anyone interested in the principles of relativity and the nature of information transfer in the universe.

mdl
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hi, this just came into my mind yesterday (while trying to sleep)..

i've got a very long, unstretchable ribbon. one end is installed on a plug of laser beam (turned off). the other end is in my hand. the ribbon is 5 light seconds long.

what happens, if i pull the ribbon?

a) i'd see the laser is on after 10 seconds => the ribbon was stretched or the space did something (what?)
b) i'd see the laser on after 5 seconds => the information traveled faster than light
c) .. ?

thanks
mdl
 
Physics news on Phys.org
The simple answer is that unstretchable rigid objects are impossible in relativity--see here.
 

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