From this visual experiment, it appears that the closer the speed of light, the pendulum movement looks slower. That is, the time inside the UFO beats slower relative to the time on the surface of the Earth, according to observer S. So, to solve the same event, Δt is always greater than Δt₀. That is why, this phenomenon is known as time dilation

#TimeDilation
#Relativity
#SpecialRelativity
#Rebiaz