| ▲ | selimthegrim 18 hours ago | |||||||
That's not how Purcell's textbook put it. | ||||||||
| ▲ | Ono-Sendai 18 hours ago | parent [-] | |||||||
ok? well, textbooks can be wrong or misguided. | ||||||||
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| ▲ | selimthegrim 18 hours ago | |||||||
That's not how Purcell's textbook put it. | ||||||||
| ▲ | Ono-Sendai 18 hours ago | parent [-] | |||||||
ok? well, textbooks can be wrong or misguided. | ||||||||
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