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Wordle 418 4/6
β¬β¬π¨π¨π¨
π¨π¨β¬π¨β¬
β¬π¨π¨π©π©
π©π©π©π©π©
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Wordle 418 4/6
π¨β¬β¬β¬π¨
π¨β¬β¬β¬β¬
β¬β¬π¨β¬β¬
π©π©π©π©π©
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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Wordle 418 6/6
π¨β¬β¬π¨β¬
β¬β¬π©π©β¬
β¬β¬π©π©β¬
β¬π©π©π©β¬
π©π©π©π©β¬
π©π©π©π©π©
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Wordle 418 5/6
π¨β¬β¬β¬π¨
β¬π¨π¨π¨β¬
β¬π¨π¨π¨π¨
π©π©π©π©β¬
π©π©π©π©π©
Three rows without a single correct-place letter? And then the wrong guess in a 50-50 split?
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Wordle 418 5/6
β¬β¬β¬π¨β¬
π¨π©β¬β¬π¨
π¨π©β¬β¬β¬
β¬π©π©π©π©
π©π©π©π©π©
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Wordle 418 6/6*
π¨β¬β¬β¬π¨
π¨β¬β¬π©π¨
β¬π¨π¨π©β¬
β¬π©π©π©β¬
β¬π©π©π©β¬
π©π©π©π©π©
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Wordle 418 4/6*
β¬π¨π¨β¬β¬
β¬π¨β¬π¨π¨
π¨π¨π¨π¨π¨
π©π©π©π©π©
Happiness will never come to those who fail to appreciate what they already have. -Anon
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Wordle 418 3/6
β¬β¬β¬β¬π¨
β¬π¨β¬π¨β¬
π©π©π©π©π©
"If we don't change direction, we'll end up where we're going"
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Wordle 418 4/6
π¨β¬β¬π¨β¬
β¬β¬β¬β¬β¬
β¬π¨π¨β¬β¬
π©π©π©π©π©
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I'm definitely on a roll
Wordle 418 2/6
β¬β¬π©π©π©
π©π©π©π©π©
Life should not be a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming βWow! What a Ride!" - Hunter S Thompson - RIP
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Wordle 418 3/6
β¬🟩🟨β¬🟨
β¬🟩🟩🟩🟩
🟩🟩🟩🟩🟩
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It was going to be guess #3 until I realized, nah, there's a more common word. Bzzzt.
Wordle 418 4/6
β¬β¬π¨β¬π¨
β¬π©π©π©β¬
π©π©π©π©β¬
π©π©π©π©π©
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Quote: Wordle 418 5/6
π¨β¬β¬β¬π¨
β¬π¨π¨π¨β¬
π¨π©β¬π¨π¨
β¬π©π©π©π©
π©π©π©π©π©
Get me coffee and no one gets hurt!
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Wordle 418 4/6
β¬β¬β¬β¬π©
β¬π¨π¨β¬π©
β¬π©π©π©π©
π©π©π©π©π©
"A little time, a little trouble, your better day"
Badfinger
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Yep,
Just a sensational article title.
There's no new physics here. Here is a video of an ice skater changing shape[^]. Video makes it easy to understand conservation of angular momentum. The experiment in the article confirms the existing prediction that changing shape (and angular momentum) in curved space can be used for locomotion.
It's the experimental setup and accurate measurements that's really a breakthrough. The setup they are using to make these measurements reminds me of the old Foucault gyroscope[^].
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No, no, no!
You got this completely wrong:
Quote: They then connected this system holistically to a rotating shaft and Quote: These forces hybridized with the curvature effects Do you know how dangerous it is to hybridaze the forces with the curvature effects, specially when they are connected hollistically?
Just one more that had me scratching my head:
Quote: the slight frequency shift induced by gravity became crucial to allow GPS systems to accurately convey their positions to orbital satellites What frequency? What GPS systems?
It's hard to penetrate such a thick layer of BS
Mircea
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It took me a few minutes to realize that you were quoting the article here:
Georgia Tech Researchers Defy Standard Laws of Physics[^]
Mircea Neacsu wrote: It's hard to penetrate such a thick layer of BS You should contact the U.S. Department of Defense and let them know! They paid for the experiment under contract W911NF-19-1-0056
Tell them Codeproject Bob sent you!
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"... the existing prediction that changing shape (and angular momentum) in curved space can be used for locomotion."
Would very much like to see reference in Classical Text re/ same. Thank You Kindly
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From Scientific American August 2009 "Swimming in SpaceTime" in curved space the notion of center of mass is not so simple. As a result upon certain repetitive changes in one's geometry/shape the center of mass can translate across said curved surface w/o need of pushing against it and w/o need of propellant. Imagine e.g. whilst upon a friction free curved ice pond flailing one's arms and legs in a certain manner one finds oneself gliding in some direction. It must be stressed a curved surface is required also it must be stressed no new physics here it is rather a matter of Newton's laws in simple/usual/conventional form assume flat space but can not be interpreted in the usual way in curved space instead require more care. To elaborate in Newtonian Physics the curved surface is a constraint on the system which is of course a collection of forces therefor if one ignores these one obtains a wrong answer. These constraining forces are of a kind which do no work so it is possible to treat them as geometry instead of the usual F = ma. For General Relativity and its curved spacetime I am not certain the notion of constraint still applies. -Cheerio
modified 11-Aug-22 8:40am.
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PaltryProgrammer wrote: it must be stressed no new physics here it is rather a matter of Newton's laws in simple/usual/conventional form
I'm impressed. Happy to see that you understand it. Looks like you fully understand it too! I was beginning to wonder if I should post a cat example[^] to illustrate the concept!
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Thank You for the kind words. May I say I do not understand why the cat example is often presented as as near as I can discern the phenomena of nonholonomic rotation can be demonstrated in flat spacetime while the effect of swimming requires curved. Perhaps more importantly the cat does not return to its' original shape/geometry so as near as I can discern it is not a matter of nonholonomic rotation but rather simply conservation of angular momentum but of course I must be incorrect as the example is cited by those much more knowledgeable than myself. I consider myself falling and merely extend my little finger and bingo presto my moment of inertia has changed so has presumably my geometry perhaps to one which I favor e.g. with legs below me. As for Hannayβs hoop as near as I can discern it not only requires a curved space but also a rotation of same also the mass in question does not seem to change its' geometry/shape. -Best
modified 11-Aug-22 2:44am.
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Hmmm,
I don't really know why cats are always used as an example. Looks like it's really common:
Cats nonholonomic[^]
If you read the paper you can see that he makes the comparison in the first paragraph:
At low Reynolds number, the effects of
inertia are negligible and, in the absence of
external forces, bodies are at rest. Nevertheless,
as a body changes its shape, its location and
orientation generally change. A cyclic change in
the shape of a body can lead to a net translation
or rotation. The net translation or rotation does
not depend on the speed with which the shape
changes are carried out; it is a consequence of
the geometry of the sequence of shapes,
a classical example of geometric phase. It's possible that you missed this part, for some reason he uses the QM terminology[^] here. The author is referring to a Nonholonomic system[^] in that statement.
Swimming in Spacetime: Motion by Cyclic Changes in Body Shape[^]
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