isotope

• n. 同位体

iso-など、同じ、-上、位置、場所、語源的にはトピック、ユートピアと同じ。つまり、等位、派生的には同位体。

isotope

isotope: [20] The term isotope for a version of an element with a particular atomic weight was coined in 1913 by the British chemist Frederick Soddy. It means literally ‘equal place’ and was formed from two Greek components, the prefix iso- ‘equal’ and the noun tópos ‘place’ (source of English topic). The reason for the coinage was that although isotopes of the same element have different atomic weights, they occupy the ‘same place’ in the periodic table of elements.
=> topic

isotope (n.)

1913, literally "having the same place," introduced by British chemist Frederick Soddy (1877-1956) on suggestion of Margaret Todd, from Greek isos "equal" (see iso-) + topos "place" (see topos); so called because despite the different atomic weights, the various forms of an element occupy the same place on the periodic table.

1. Lasers promise to change this by Making isotope separation easier，and cheaper.

レーザーはこの局面を変えることができて、それによって同位体分離を比較的に容易にして、比較的に安価にすることができます。dd>

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2.This indium isotope was created at the same time as the earth.

このインジウム同位体は地球と同じ時代に生まれた。

3.The isotope ratio is directly used for comparing oils or gases.

同位体比は、各種石油または天然ガスの比較に直接使用されます。

4.Changes of nuclear mass and nuclear size cause isotope shifts.

原子核の質量と大きさの違いによる同位体の移動.

5.There are several ways to separate excited from unexcited molecules，thus harvesting the desired isotope .

現在、励起された分子と非励起分子を分離する方法がいくつかあります。これにより、私たちが必要とする同位体を大量に得ることができます。dd>

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