Feynmanium

English

Etymology

Feynman +‎ -ium.
Named after Richard Feynman, who used a back-of-the-envelope calculation using classical physics to determine that element 137 is the last stably neutrally charged element, as larger elements would need electrons travelling faster than light to become neutral.

Noun

Feynmanium (uncountable)

The hypothetical chemical element with atomic number 137.

Usage notes

This is not (yet) an official designation, but is a nickname used by some members of the nuclear physics community.

Synonyms

(element 137): Fy (symbol), untriseptium (designation using default convention for unnamed elements), Uts (symbol)

单词	Feynmanium
释义	Feynmanium English Etymology Feynman +‎ -ium. Named after Richard Feynman, who used a back-of-the-envelope calculation using classical physics to determine that element 137 is the last stably neutrally charged element, as larger elements would need electrons travelling faster than light to become neutral. Noun Feynmanium (uncountable) The hypothetical chemical element with atomic number 137. Usage notes This is not (yet) an official designation, but is a nickname used by some members of the nuclear physics community. Synonyms (element 137): Fy (symbol), untriseptium (designation using default convention for unnamed elements), Uts (symbol)
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