انیشتین فکر می کرد که اتساع زمان هم واقعی است و هم غیر واقعی - او درست می گفت

Einstein thought time dilation was both real and not – he was right

What even is time? Columnist Karmela Padavic-Callaghan takes on this mind-bending question by exploring the proof we have that time dilation is both a physical phenomenon and a psychological one