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In what year did Einstein present the final form of the general theory of relativity?
Answer
1915
What metric models a homogeneous and isotropic universe in general relativity?
Answer
FLRW metric
What is the spacetime symmetry group of special relativity including translations?
Answer
Poincare group
What diagram compactifies spacetime to show its causal structure?
Answer
Penrose diagram
Which American physicist proposed the Shapiro time delay in 1964?
Answer
Irwin Shapiro
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Latest trivia questions
What is the spacetime symmetry group of special relativity including translations?
Answer
Poincare group
What diagram compactifies spacetime to show its causal structure?
Answer
Penrose diagram
Which American physicist proposed the Shapiro time delay in 1964?
Answer
Irwin Shapiro
What general-relativity effect delays radar signals passing near the Sun?
Answer
Shapiro time delay
Which effect shifts light frequency because of relative motion in special relativity?
Answer
relativistic Doppler effect
What invariant quantity separates events in Minkowski spacetime?
Answer
spacetime interval
Who gave the 1908 lecture titled Space and Time?
Answer
Hermann Minkowski
What 1905 paper introduced Einstein's special relativity?
Answer
On the Electrodynamics of Moving Bodies
What term means the energy an object has because of its rest mass?
Answer
rest energy