eche, the sign flips because cambridge defines water potential as the potential for water *to leave* a system, so pure water at atmospheric pressure is set at zero and everything else is negative. it confused me too, until i started tutoring these kids in moreh over patchy video calls, trying to explain concepts that feel upside down. we laugh about it, how it’s like my mother counting her tomatoes as a loss if they’re not perfectly red, houjik—always measuring what’s missing, not what’s there.
#exams#study
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