Question

What was Einstein's first theory?
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Answer 1

Step-by-step explanation:

special relativity

Albert Einstein. He published the first part of his theory — special relativity — in the German physics journal Annalen der Physik in 1905 and completed his theory of general relativity only after another decade of difficult work.Apr 13, 2018

Answer 2

Answer:

Albert Einstein. He published the first part of his theory — special relativity — in the German physics journal Annalen der Physik in 1905 and completed his theory of general relativity only after another decade of difficult work.