What Are the Unsolved Problems in Physics?

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Unsolved problems in physics include the quest for a unification of quantum mechanics and general relativity, as well as the understanding of dark matter. Various resources, including Wikipedia, provide extensive lists of these challenges. Participants in the discussion emphasize the importance of these issues in advancing scientific knowledge. Additional links were shared for further exploration of the topic. The conversation highlights the ongoing nature of research in fundamental physics.
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hi, everybody, please tell me " what're Unsolved problems in physics ? " Thanks so much
 
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There are tons.

I reckon the most important are finding a unification of quantum mechanics and general relativity and understanding what dark matter is.

Here is a comprehensive list:
http://en.wikipedia.org/wiki/Unsolved_problems_in_physics
 

Thread 'Why can't Solar panels be hemispherical, or a curved strip type?'

comparing a flat solar panel of area 2π r² and a hemisphere of the same area, the hemispherical solar panel would only occupy the area π r² of while the flat panel would occupy an entire 2π r² of land. wouldn't the hemispherical version have the same area of panel exposed to the sun, occupy less land space and can therefore increase the number of panels one land can have fitted? this would increase the power output proportionally as well. when I searched it up I wasn't satisfied with...
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