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unknown quantity
Library
It was the fatal x which remained to satisfy the last equation, the unknown quantity which represented the unseen force that was dragging them into the outer wilderness of insterstellar space, into far-off regions from which, with the remaining force at his disposal, no return would be possible.
mathematics
неизвестная величина
Математическая переменная, значение которой ещё не определено.
A Honeymoon in Space
A Honeymoon in Space is a 1901 novel by George Griffith. It was originally serialized in abridged form in Pearson's Magazine in 1900 under the title Stories of Other Worlds. The scientific romance story depicts a tour of the Solar System, a type of story that was in vogue at the time.
