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7 hours ago answer added freecharly timeline score: 1
10 hours ago history became hot network question
14 hours ago answer added Farcher timeline score: 4
15 hours ago comment added kangermu I think the key is precise language. If you see “If we put a charge q inside a spherical cavity…” then it is not clear whether they mean “we put it there and let go” or “we put it there and hold it there”. You are imagining the former, which is quite reasonable. But most textbooks mean the latter. The textbook authors will tend not to realize the ambiguity because they have spent a lifetime studying and teaching the latter problem so they longer have the perspective of a new student. You might hope this would be caught by good editors or proofreaders. But textbooks are just mostly garbage.
15 hours ago answer added KB10 timeline score: 1
18 hours ago history asked human CC BY-SA 4.0