\nomenclatureentry{a$a$@[{$a$}]\begingroup The number of angels per unit area\nomeqref {1}|nompageref}{1}
\nomenclatureentry{a$N$@[{$N$}]\begingroup The number of angels per needle point\nomeqref {1}|nompageref}{1}
\nomenclatureentry{a$A$@[{$A$}]\begingroup The area of the needle point\nomeqref {1}|nompageref}{1}
\nomenclatureentry{a$\sigma$@[{$\sigma$}]\begingroup The total mass of angels per unit area\nomeqref {1}|nompageref}{1}
\nomenclatureentry{a$m$@[{$m$}]\begingroup The mass of one angel\nomeqref {1}|nompageref}{1}