Category Archives: Twins Paradox

[Originally drafted 2024-11-18] The annoying thing about the twins paradox is that even though we can see that one of the twins did not remain in an inertial frame the whole time, it seems like a minor difference, one that … Continue reading →

[Original draft 2024-11-15. After publishing my original series of posts analyzing the twins paradox, I realized I had more to say. This and the next post were written a few months later, but not published. A recent memory about an … Continue reading →

Twin paradox, by Dr Don Lincoln of Fermilab (very unsatisfying, very unusual for Dr Lincoln, but maybe it will work for you). Twin paradox: the real explanation Twin paradox: the real explanation (no math) Sabine Hossenfelder This is the best … Continue reading →

The symmetry argument made in the twins paradox is now broken, but what is it about those non-inertial events that prevents us from considering the separate legs of space travel—away and back, as two independent segments of a single inertial … Continue reading →

At this point, Ben stops to take his samples and make measurements and survey the exoplanet.  He spends a year doing this, but he is no longer moving away from Amelia.  Their clocks are each ticking at the same rate.  … Continue reading →

I think I can present this topic without math, but I will rely heavily on the visual tool of spacetime diagrams.  Spacetime is the hybrid combination of space and time.  It might sound abstract and scary, but it is really … Continue reading →

The Melting Watch, Salvador Dali, 1954 When I was studying physics in college, one of the early subjects was Einstein’s special relativity theory.  The subject is called “relativity” because it explains the physics of objects moving relative to each other.  … Continue reading →