Tipler cylinder, a hypothetical object theorized to allow time travel
Kris Straub's Starslip comic includes a Tipler cylinder created as a work of art (comic 569).
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John DeChancie's Starrigger series uses vertically-aligned Tipler cylinders (officially called Kerr-Tipler objects) to create spacetime gateways along an intergalactic highway.
cylinder | Phonograph cylinder | Frank J. Tipler | Cylinder (geometry) | cylinder (geometry) | Zedel Coupé Docteur CI of 1911, 4 cylinder, 1954 ccm, 4 HP, 48 km/h, Cité de l'Automobile | Diving cylinder | Cylinder (engine) | Cylinder block | Tipler cylinder | Schematic single-cylinder T-head engine, from ''The Autocar | O'Neill cylinder | Gas cylinder | Cylinder, Iowa | cylinder (engine) | cylinder block | Cylinder |