Context: In non-relativistic classical mechanics, Newton's concept of "relative, apparent, and common time" can be used in the formulation of a prescription for the synchronization of clocks. Events seen by two different observers in motion relative to each other produce a mathematical concept of time that works sufficiently well for describing the everyday phenomena of most people's experience. In the late nineteenth century, physicists encountered problems with the classical understanding of time, in connection with the behavior of electricity and magnetism. Einstein resolved these problems by invoking a method of synchronizing clocks using the constant, finite speed of light as the maximum signal velocity. This led directly to the result that observers in motion relative to one another measure different elapsed times for the same event.

Question: What Newtonian concept can be used in the formulation of an idea for the synchronization of clocks?
Answer: concept of "relative, apparent, and common time"

Question: In which century did physicists encounter problems with the understanding of time?
Answer: the late nineteenth century

Question: The behavior of which two phenomena caused physicists to encounter problems with their understanding of time in the late 19th century?
Answer: the behavior of electricity and magnetism

Question: Which famous scientist resolved these issues?
Answer: Einstein

Question: In what year did Einstein encounter problems with using electricity?
Answer: Unanswerable

Question: Who's concept can be used to synchronize the use of electricity?
Answer: Unanswerable

Question: What did physicists use to solve the problems of electricity synchronization?
Answer: Unanswerable

Question: What did the use of the speed of light by Newton lead to?
Answer: Unanswerable

Question: What concept by Einstein can be used to synchronize electricity in classical mechanics?
Answer: Unanswerable

Question: What Newtonian concept can be used in the formulation of an idea for the understanding of clocks?
Answer: Unanswerable

Question: In which century did physicists encounter problems with the understanding of electricity?
Answer: Unanswerable

Question: Which famous scientist struggled with these issues?
Answer: Unanswerable

Question: The behavior of which two phenomena caused physicists to encounter problems with their understanding of clocks in the late 19th century?
Answer: Unanswerable

Question: How did Einstein resolve the two different observers?
Answer: Unanswerable