Modeling a White Hole With Your Kitchen Sink

jamie passes along this excerpt from Wired: "That ring of water in your kitchen sink is actually a model white hole. For the first time, scientists have shown experimentally that liquid flowing from a tap embodies the same physics as the time-reversed equivalent of black holes. When a stream of tap water hits the flat surface of the sink, it spreads out into a thin disc bounded by a raised lip, called the hydraulic jump. Physicists’ puzzlement with this jump dates back to Lord Rayleigh in 1914. More recently, physicists have suggested that, if the water waves inside the disc move faster than the waves outside, the jump could serve as an analogue event horizon. Water can approach the ring from outside, but it can’t get in."

Comments

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[WrongSizeGlass]

It's a sink ... and some water coming out of the faucet. There is no mystery here and it isn't related to a black hole. Let's keep things in perspective. Analogies are great, especially car analogies, but a small wave of water in my sink is not analogous to the event horizon of a black hole any more than my garbage disposal is analogous to the rest of the black hole.

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