Kappa Journal
Vol 10 No 1 (2026): Kappa Journal

Paradoks Kembar (Twin Paradox): Analisis dan Resolusi dalam Kerangka Teori Relativitas Khusus

M. Fadly (Universitas Negeri Medan)
Hizkia Natanael Simatupang (Universitas Negeri Medan)
Yanti Seniawati Aritonang (Universitas Negeri Medan)
Amisha Sihite (Universitas Negeri Medan)
Elisa Siregar (Universitas Negeri Medan)
Jujur Marholong Purba (Universitas Negeri Medan)
Deo Demonta Panggabean (Universitas Negeri Medan)
Ladestam Sitinjak (Universitas Negeri Medan)



Article Info

Publish Date
30 Apr 2026

Abstract

The Twin Paradox stands as one of the most challenging thought experiments in Einstein's special theory of relativity, seemingly revealing an internal contradiction within the theory itself. This paradox illustrates the scenario of twin siblings where one travels through space at relativistic speeds while the other remains on Earth. A naive analysis from both perspectives yields contradictory conclusions: each twin predicts the other would be younger. This apparent contradiction forms the core of the paradox. The paradox can be completely resolved within the framework of special relativity without needing to invoke general relativity. This research uses a library research method by collecting data from various relevant sources that support the twin paradox in the concept of time expansion. Experimental verification through the Hafele-Keating experiment with atomic clocks and observations of atmospheric muon decay confirms the theoretical predictions.

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Journal Info

Abbrev

kpj

Publisher

Subject

Astronomy Physics Other

Description

Kappa Journal (e-ISSN 2549-2950) mempublikasikan artikel hasil-hasil penelitian fisika, inovasi pembelajaran fisika, dan pemikiran-pemikiran kritis tentang fisika maupun pendidikan fisika. Kappa Journal diterbitkan oleh Universitas Hamzanwadi dua kali setahun yakni setiap bulan Juni dan ...