Search found 3 matches

by Intropy
Thu Aug 14, 2014 2:24 am UTC
Forum: What If?
Topic: What-If 0108: "Expensive Shoebox"
Replies: 151
Views: 102584

Re: What-If 0108: "Expensive Shoebox"

How densely can antihydrogen currently be stored? It electrically neutral so it should suffer from the repulsion problem that antiproton storage suffers, but then I'm not sure how it can actually be trapped in the first place either. Assuming we have sufficient density the question is how long we ca...
by Intropy
Fri Nov 22, 2013 9:21 am UTC
Forum: What If?
Topic: What-if 0067: "Expanding Earth"
Replies: 62
Views: 15216

Re: What-if 0067: "Expanding Earth"

The discussion here was predicated on "composition of rock" meaning "density of the Earth," while I took it to mean that the locations of the materials in the Earth remain what they are. In this scenario an expansion of the Earth's radius does not imply an increase in mass but ra...
by Intropy
Fri Nov 22, 2013 9:00 am UTC
Forum: What If?
Topic: What-If 0072: "Loneliest Human"
Replies: 17
Views: 8358

Re: What-If 0072: "Loneliest Human"

If the Toba catastrophe hypothesis is correct, then the eruption of Toba about 70,000 years ago caused human populations to collapse to the neighborhood of 2,000 to 10,000 people living in Southern Africa. There's evidence that people had migrated as far as Southeast India by that time (there's also...

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