Editing 2643: Cosmologist Gift
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==Explanation== | ==Explanation== | ||
โ | This comic shows a box labeled to indicate that it contains 30,000 fresh {{w|neutrino}}s and four zeptograms of {{w|dark matter}}. The box is intended as an inexpensive gift for a {{w|cosmologist}}. The gift giver didn't put those things in the | + | This comic shows a box labeled to indicate that it contains 30,000 fresh {{w|neutrino}}s and four zeptograms of {{w|dark matter}}. The box is intended as an inexpensive gift for a {{w|cosmologist}}. The gift giver didn't put those things in the box; both are simply passing through it. While the caption suggests this would be a good gift for a cosmologist, what they or anyone else would do with such a box is uncertain. It should also be noted that this "gift" consists of exactly the same thing that was in the empty space that the cosmologist would put this box down in. |
There are about a billion neutrinos per cubic meter throughout space, produced during the {{w|Big Bang}}.[https://physics.mit.edu/news/journal/physicsatmit_14_conrad/] However, the flux of "freshly produced" {{w|solar neutrino}}s at Earth is around 6.5×10<sup>10</sup>/cm<sup>2</sup>/s, yielding about 2.1 million per cubic meter, and implying the box is around 12 liters, three quarters as big as a typical {{w|breadbox}}. | There are about a billion neutrinos per cubic meter throughout space, produced during the {{w|Big Bang}}.[https://physics.mit.edu/news/journal/physicsatmit_14_conrad/] However, the flux of "freshly produced" {{w|solar neutrino}}s at Earth is around 6.5×10<sup>10</sup>/cm<sup>2</sup>/s, yielding about 2.1 million per cubic meter, and implying the box is around 12 liters, three quarters as big as a typical {{w|breadbox}}. |