Well, this is one of the very, very rare situations where bringing in general relativity makes a problem There's a huge amount of potential energy in this scenario—the energy that we imagined would blast all these electrons apart. (It's The most energy we've really observed is in cosmic rays; more than LHC by circa 10Luckily, that's not the end of the story. I explained Noah's scenario, and she was kind enough to offer some thoughts.Dr.

This means you're free to copy and share these comics (but not to sell them). This means you're free to copy and share these comics (but not to sell them). eclipse look like? If you replaced the moon with a perfectly reflecting mirror it would no longer be the moon and we would not be starting a fire with moonlight. But compared to a lot of the At least, if it didn't eat anything. d = (1/2)at^2. Since the gravitational influence of the black hole can only expand outward at the speed of light, much of the universe around us would remain blissfully unaware of our ridiculous electron experiment.I interpreted the question to mean that the Moon was replaced with a sphere of electrons the size and mass of the Moon, and ditto for the Earth. This means you're free to copy and share these comics (but not to sell them). Quantum mechanics and general relativity give absurd answers, and they're not even the In the case of an electron Moon, the energy from all those electrons pushing on each other is so large that the gravitational pull wins, and our singularity would form a normal black hole. The extra acceleration comes from the lack of the force of gravity in the Y-direction. Remember how we're ignoring general relativity?

Every now and then, Munroe would get emails asking him to arbitrate a science debate. Black holes burn brightly as they devour things; the whirlpool of matter Fortunately, there's not a lot out there for it to eat, so it wouldn't glow very brightly for now. More details.. Keeler agreed that we shouldn't rely on any calculations that involve putting that much energy in each electron, since it's so far beyond what we're able to test in our accelerators. eclipse look like?A black hole the mass of the Moon would have an event horizon about the size of a sand grain. With this acceleration, it would take you just under 3 hours to get to the moon. The Moon wouldn't orbit the Earth because they'd barely have a chance to influence each other; [2] I interpreted the question to mean that the Moon was replaced with a sphere of electrons the size and mass of the Moon, and ditto for the Earth. If the Sun were replaced by a black hole of the same mass, the Earth's orbit wouldn't change, although life on Earth With the Moon gathered into a point, there'd be no moonlight, which would affect the life cycles of all kinds of nocturnal animals. This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License. Keeler's diagnosis: "Yup, black hole."

That is, until something stringy happened.The proton Earth, which would also be part of this black hole, would reduce the charge, but since an Earth-mass of protons has much less charge than a Moon-mass of electrons, it doesn't affect the result much.A black hole with the mass of the observable universe would have a radius of 13.8 billion light-years, and the universe is 13.8 billion years old, which has led some people to say "the Universe is a black hole!" If it's possible, what would a lunar ("holar"?) On one level, it makes a kind of sense; after all, electrons orbit protons, and moons orbit planets. —Matt "Not much" and "not much." More details.. In fact, XKCD #1441 (Turnabout) only works *because* we landed on the moon.108.162.216.94 00:31, 6 December 2014 (UTC) That was my initial interpretation. It now has 600,000 to a million page hits daily. In fact, a If you put two electrons together, they try to fly apart. The Moon reflects sunlight, but with some surprising twists. It is very wrong to say the moon is essentially a mirror for the same reason that you don't wake up in the morning, stumble to the bathroom, and sigh mournfully as you take a long, hard look at yourself in the plaster wall. Math: total distance: 384,000,000 meters to the moon. There are other interpretations, but practically speaking the end result is the same.


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