. . "106254915"^^ . . "105873405"@en-us . . . . . . "0"^^ . "a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves"@en-us . . . . . . . . . . . . . . . . "ether"@en-us . . . "ether"^^ . "aether"@en-us . . . "06254915-n"^^ . . "0"^^ . . . .