大きさ

MAGNITUDEおおきさ[/ˈmæɡnɪˌtjud/]名詞

解説

純粋に相対的で、何も大きくも小さくもない。

もし宇宙全体が1000倍に膨張しても、大きさは変わらない。
ただ一つだけ変わらなければ相対的に他は大きくなる。

我々の血の中の微生物にとっては、赤血球間の距離も「天文学的」。

付記

なし。

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Original

Size. Magnitude being purely relative, nothing is large and nothing small. If everything in the universe were increased in bulk one thousand diameters nothing would be any larger than it was before, but if one thing remain unchanged all the others would be larger than they had been. To an understanding familiar with the relativity of magnitude and distance the spaces and masses of the astronomer would be no more impressive than those of the microscopist. For anything we know to the contrary, the visible universe may be a small part of an atom, with its component ions, floating in the life-fluid (luminiferous ether) of some animal. Possibly the wee creatures peopling the corpuscles of our own blood are overcome with the proper emotion when contemplating the unthinkable distance from one of these to another.

Additional notes

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