抄几段话# Thoughts - 思考者
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1. Ernst Mach:
物理学中的每一个陈述必须表达可观测量间的关系.
Every statement in Physics has to state relations between observable
quantities.
This philosophy was that you should never introduce any quantity in science
which could not be actually observed and measured.
2. Lord kelvin:
你的陈述应该可以被测量, 否则不够令人满意.
I often say that when you can measure what you are speaking about, and
express it in numbers, you know sth about it; but when you can't measure it,
when you can't measure it in numbers, your knowledge is of a meage
物理学中的每一个陈述必须表达可观测量间的关系.
Every statement in Physics has to state relations between observable
quantities.
This philosophy was that you should never introduce any quantity in science
which could not be actually observed and measured.
2. Lord kelvin:
你的陈述应该可以被测量, 否则不够令人满意.
I often say that when you can measure what you are speaking about, and
express it in numbers, you know sth about it; but when you can't measure it,
when you can't measure it in numbers, your knowledge is of a meage