DaveC426913's latest activity
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DaveC426913 replied to the thread I am writing a SciFi story but I don't like Rayguns.And there's no 4D equivalent of a knot? Oh, that's why you're talking about 2-spheres. You need the 4D equivalent of 3D's "line" -... -
DaveC426913 reacted to Hornbein's post in the thread I am writing a SciFi story but I don't like Rayguns with
Informative.
I often see that knots are impossible in 4D. But these are mathematical knots, 1D closed curves floating freely in space. In real life... -
DaveC426913 replied to the thread I am writing a SciFi story but I don't like Rayguns.TIL. I had heard that 4D knots don't work because they "fall apart". but I had always assumed that was a geometry thing (i.e. their... -
DaveC426913 replied to the thread I am writing a SciFi story but I don't like Rayguns.Knots. -
DaveC426913 replied to the thread High School How Rare Is Low Smartphone Usage Among Metro Travelers in Japan?.Oh my God, my wife is on the phone all day, between business calls and personal calls. I don't mind listening to her (she has a lovely... -
DaveC426913 reacted to Vanadium 50's post in the thread Undergrad What upcoming experiments hold hope for physics BTSM? with
Like.
All experiments have the potential to discover new physics. Asking which ones will before the data comes in is unscientific. -
DaveC426913 reacted to Vanadium 50's post in the thread Undergrad What upcoming experiments hold hope for physics BTSM? with
Like.
All experiments have the potential to discover new physics. -
DaveC426913 replied to the thread Collection of Science Jokes P2.So... the last time we saw human-driven climate change slowing the Earth's rotation at this rate was 3.6 million years ago? 🤔 -
DaveC426913 replied to the thread Gmail AI summaries.I'm more concerned about the smut you guys are passing back and forth! :D -
DaveC426913 replied to the thread High School Classic question regarding the nature of quantum tunneling.Any chance this is research for a sci-fi story? We have a forum for that. -
DaveC426913 reacted to AlexB23's post in the thread High School Classic question regarding the nature of quantum tunneling with
Haha.
Wait, that is where the missing socks go. They tunnel into the floor. -
DaveC426913 replied to the thread High School Classic question regarding the nature of quantum tunneling.This is not endemic to QM. Classically, there is a non-zero chance that all the air molecules in your room end up on the left side of... -
DaveC426913 reacted to A.T.'s post in the thread High School Ant on a stretchy rope puzzle with
Like.
Pfff... if you name yourself after a large number, you should do better on that. Try: https://www.mathsisfun.com/calculator-precision.html -
DaveC426913 replied to the thread Kitten raising advice.She did escape once. We found her within 30 seconds, six feet from the door, entranced by a pile of the dog's poop. No upset. Just...

