23:5023:50, 14 March 2019diffhist+99
Bigger Than Worlds
Described a "ringworld" more completely. Corrected an error about Niven's Ringworld, which did not use gravity generators.Tags: Mobile editMobile web edit
19:0819:08, 8 July 2018diffhist+376
m
Helium-3
Added a bit from a reputable source about the practical difficulty in fusing He3 without creating radiation
23:5023:50, 14 March 2019diffhist+99
Bigger Than Worlds
Described a "ringworld" more completely. Corrected an error about Niven's Ringworld, which did not use gravity generators.Tags: Mobile editMobile web edit
19:0819:08, 8 July 2018diffhist+376
m
Helium-3
Added a bit from a reputable source about the practical difficulty in fusing He3 without creating radiation