سوال ۳۰ کنکور ارشد فیزیک ۱۴۰۰

PART C: Reading Comprehension — PASSAGE 3

A phenomenon of quantum mechanics known as superposition can impact timekeeping in high-precision clocks, according to a theoretical study from Dartmouth College, Saint Anselm College and Santa Clara University. Research describing the effect shows that superposition the ability of an atom to exist in more than one state at the same time — leads to a correction in atomic clocks known as “quantum time dilation.” The research, published in the journal Nature Communications, takes into account quantum effects beyond Albert Einstein’s theory of relativity to make a new prediction about the nature of time.

“Whenever we have developed better clocks, we’ve learned something new about the world,” said Alexander Smith, an assistant professor of physics at Saint Anselm College, who led the research as a junior fellow in Dartmouth’s Society of Fellows. “Quantum time dilation is a consequence of both quantum mechanics and Einstein’s relativity, and thus offers a new possibility to test fundamental physics at <u>their</u> intersection.”

In the early 1900s, Albert Einstein presented a revolutionary picture of space and time by showing that the time experienced by a clock depends on how fast it is moving — as the speed of a clock increases, the rate at which it ticks decreases.

30- Where does the following sentence fit into the passage?

This was a radical departure from Sir Isaac Newton’s absolute notion of time.