I want to know the answer to the following question:
In what year was 78.26 rpm chosen as standard?
All the background I'm provided with is that "In parts of the world that used 50 Hz current, the standard was 77.92 rpm (3,000 rpm with a 77:2 ratio), which was also the speed at which a strobe disc with 77 lines would "stand still" in 50 Hz light (92 lines for 60 Hz).". Is that enough to answer the question?
Answer: no