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Biguanide (/ b aɪ ˈ ɡ w ɒ n aɪ d /) is the organic compound with the formula HN(C(NH)NH 2) 2. It is a colorless solid that dissolves in water to give a highly basic solution. It is a colorless solid that dissolves in water to give a highly basic solution.
Paul Davies, How to build a time machine, 2002, Penguin popular science, ISBN 0-14-100534-3 gives a very brief non-mathematical description of Gott's alternative; the specific setup is not intended by Gott as the best-engineered approach to moving backwards in time, rather, it is a theoretical argument for a non-wormhole means of time travel.
Lucas from San Mateo, CA, tells Kelly Clarkson how he created a real-life time machine! He documented his entire life for a year with Spectacle glasses and then took the footage and imported it ...
The first page of The Time Machine published by Heinemann. Time travel is the hypothetical activity of traveling into the past or future. Time travel is a concept in philosophy and fiction, particularly science fiction. In fiction, time travel is typically achieved through the use of a device known as a time machine. The idea of a time machine ...
Structure of chlorhexidine, a bisbiguanide antiseptic.. Bisbiguanides are a class of chemically related compounds known for their bactericidal properties. Generally considered to be of the generic formula: R 1 R 2 N.C(:NR 6)NH.C(:NH)NH.CH 2 X--(CH 2) 3 NH.C(:NH)NH.C(:NR 7)NR 3 R 4 V. [1] These compounds include the antiseptics chlorhexidine and alexidine.
An objection to the practicality of building a Tipler cylinder was discovered by Stephen Hawking, who argued that according to general relativity it is impossible to build a time machine in any finite region that satisfies the weak energy condition, meaning that the region contains no exotic matter with negative energy. The Tipler cylinder, on ...
The Fentz legend describes how one evening in mid-June 1951, at about 11:15 p.m., passersby at New York City's Times Square noticed a man of about 29 years of age, dressed in the fashion of the late 19th century. No one observed how he had arrived there, and he was disoriented and confused standing in the middle of an intersection.
The time he worked up the courage to ask a date to his senior prom and decided to mention that he'd used his toes to dial her phone number. (“Perhaps not the best way to make the case for myself ...