Editing 1440: Geese
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==Explanation== | ==Explanation== | ||
| β | [[Megan]] is commenting on a flock of geese passing overhead and says the light from the geese reaching their eyes now could have come from hundreds of years ago. This is a fact for the light from stars | + | [[Megan]] is commenting on a flock of geese passing overhead and says the light from the geese reaching their eyes now could have come from hundreds of years ago. This is a fact for the light from stars. [[Cueball]] points out the absurdity of Megan's statement by pointing out that the geese are only a few hundred yards away rather than a few hundred light years. She continues along the same lines when she implies to Cueball that he is observing a past version of her, despite them being only a few feet apart. Technically he ''is'' viewing a past version of her, but not one from "long ago"; if someone is two feet away from you, you are seeing them as they were roughly [http://www.wolframalpha.com/input/?i=2+feet+%C3%B7+air+speed+of+light 2 nanoseconds] ago. |
Megan's statement "You're hearing how they once sounded." is somewhat more justified - sound from "a few hundred yards away" would take about [http://www.wolframalpha.com/input/?i=400+yards+%C3%B7+air+speed+of+sound one second] to be heard (depending on the exact distance and the prevailing atmospheric conditions). That said, the sound of a goose isn't likely to change enough over the course of a second or two to make this distinction particularly significant. | Megan's statement "You're hearing how they once sounded." is somewhat more justified - sound from "a few hundred yards away" would take about [http://www.wolframalpha.com/input/?i=400+yards+%C3%B7+air+speed+of+sound one second] to be heard (depending on the exact distance and the prevailing atmospheric conditions). That said, the sound of a goose isn't likely to change enough over the course of a second or two to make this distinction particularly significant. | ||
