Twin paradox. The view from the reference frame of the outbound traveler.
Source: Time dilation: The basis for the so-called “twin paradox”, by A. John Mallinckrodt, Professor of Physics at Cal Poly Pomona

Twin paradox. The view from the reference frame of the outbound traveler.

Source: Time dilation: The basis for the so-called “twin paradox”, by A. John Mallinckrodt, Professor of Physics at Cal Poly Pomona