What was the most difficult problem in physics?
Answers
Answer:
Quantum Gravity. The biggest unsolved problem in fundamental physics is how gravity and the quantum will be made to coexist within the same theory. ...
Particle Masses. ...
The “Measurement” Problem. ...
Turbulence. ...
Dark Energy. ...
Dark Matter. ...
Complexity. ...
The Matter-Antimatter.
Explanation:
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Answer:. Quantum Gravity
Explanation: The biggest unsolved problem in fundamental physics is how gravity and the quantum will be made to coexist within the
same theory. Quantum Gravity [1] is required to make the
whole of physics logically consistent. The problem is that
quantum physics and general relativity already overlap each
other’s domains, but do not fit together.
The biggest challenge with quantum gravity, from a scientific
point of view, is that we cannot do the experiments required.
For example, a particle accelerator based on present
technology would have to be larger than our whole galaxy in
order to directly test the effects. This means that quantum
gravity today is not yet science in the strict sense. No
experimental input exists that can inspire and control
theoretical ideas, and historically we know that theoretical
“progress” then usually occurs in completely wrong
directions.
Einstein’s dream was to describe the whole of nature in a
single theory. That dream is still not realized.