Relativitas umum (bahasa Inggris: general relativity) adalah sebuah teori geometri mengenai gravitasi yang diperkenalkan oleh Albert Einstein pada 1916.
Teori ini merupakan penjelasan gravitasi termutakhir dalam fisika modern. Ia menyatukan teori Einstein sebelumnya, relativitas khusus, dengan hukum gravitasi Newton.
Hal ini dilakukan dengan melihat gravitasi bukan sebagai gaya, tetapi lebih sebagai manifestasi dari kelengkungan ruang dan waktu.
Utamanya, kelengkungan ruang waktu berhubungan langsung dengan momentum empat (energi massa dan momentum linear) dari materi atau radiasi apa saja yang ada.
Hubungan ini digambarkan oleh persamaan medan Einstein.
"Reality is merely an illusion, albeit a very persistent one."
*Albert Einstein*
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General Relativity
Sumber:
The University of Cambridge
Wikipedia
To Be Continued
