The initial rational explanation for apparent variation in lunar brightness, tied to differing thickness or reflectivity of matter.
Topic brief
A Jiang Lens evidence brief for this topic, built from source tags, transcript matches, and linked source refs.
dense and rare
A transcript-matched topic anchored by excerpts such as "...seems to us diverse appears caused, I think, by matter dense and rare."
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Topic Scope And Freshness
A transcript-matched topic anchored by excerpts such as "...seems to us diverse appears caused, I think, by matter dense and rare."
Key Notes
The quoted line frames the dark spots as a problem of apparent diversity that might be explained by matter being dense in some places and rare in others.
Timestamped Evidence
"...seems to us diverse appears caused, I think, by matter dense and rare."
"...explanation. Why are there dark spots on the moon? Matters dense and rare. What does he mean by that? What does he mean by..."
"...the verse up here is caused I think by matter dense and rare and she you certainly will see that your belief is deeply..."
"...us diverse up here is caused, I think, by matter dense and rare. Okay? What does he mean by this? Let me explain. What..."
"The moon has parts that are dense and rare. Dense just means there's lots of rocks. Okay? Rare means like there's an opening. So..."
Relevant Lectures And Readings
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