TheVat

Thanks. You probably cited it in a related thread and I missed that. I will borrow it from a nearby college.

Am trying to search what MTW is. Can't see from the page screenshots. A Google search found Mathematics Their Way, but that is a text for K-2, so probably not. A citation would be helpful for some who are following this thread.

Video about living with a rooster... ...in a Mumbai apartment https://www.theatlantic.com/video/index/582871/tungrus/?utm_source=atl&utm_medium=email&utm_campaign=share

Not even wrong.

There is decomposition of a manifold by triangulation. That works on a 3-manifold, but not always on a 4. And there are fractal manifolds, which I don't know much about. Maybe not workable given the boundary of a Mandelbrot set. If the boundary of a manifold is one dimension lower, then....hmm. There is also handle decomposition, which takes balls. Sorry.

A mathematician named Klein Thought the Möbius band was divine. Said he: If you glue The edges of two, You'll get a weird bottle like mine.

Perhaps our recent new Norwegian-speaking member could shed some light on this? And why it took two weeks to react this way. @grayson Perhaps they are pining for the fjords?

Ok, that helps. Thanks.

Is that certain? Why is it not just as valid to have a model in which space does not expand and objects simply move apart under the influence of their mutual gravity and dark energy repulsion? In that case, nothing emerges at large scale, it just becomes easier to observe because you don't have local energy densities obscuring it.

I guess I was trying to ask, with my limited physics, if it could be an intrinsic property at the smaller scale which is just masked by the gravitational attraction of local inhomogeneous clumps so it's only noticeable at the largest scale. Maybe it doesn't make sense outside of QFT? Can zero point energy be the cosmological constant?

A boy stood on the burning decks, mumbling a crust of clotted flecks, an oesophagus lofted to fungible heights, expels a conundrum in bright purple tights, a brother now fits in a microwave dish, though adding galoshes makes it a squish.

I was thinking of dark energy theory, where expansion and vacuum energy are related. As in this... https://www.cambridge.org/core/journals/journal-of-plasma-physics/article/abs/dark-energy-and-dark-matter-as-due-to-zero-point-energy/DFAC4A98338A39DDFD72DA85A6B09F06 An attempt is made to explain dark energy and dark matter of the expanding universe in terms of the zero point vacuum energy. This analysis is mainly limited to later stages of an observable nearly flat universe. It is based on a revised formulation of the spectral distribution of the zero point energy, for an ensemble in a defined statistical equilibrium having finite total energy density. The steady and dynamic states are studied for a spherical cloud of zero point energy photons. The ‘antigravitational’ force due to its pressure gradient then represents dark energy, and its gravitational force due to the energy density represents dark matter. Four fundamental results come out of the theory. First, the lack of emitted radiation becomes reconcilable with the concepts of dark energy and dark matter. Second, the crucial coincidence problem of equal orders of magnitude of mass density and vacuum energy density cannot be explained by the cosmological constant, but is resolved by the present variable concepts, which originate from the same photon gas balance. Third, the present approach becomes reconcilable with cosmical dimensions and with the radius of the observable universe. Fourth, the deduced acceleration of the expansion agrees with the observed one. In addition, mass polarity of a generalized gravitation law for matter and antimatter is proposed as a source of dark flow.

Good question. How would a vacuum energy model of expansion work with emergentism? Though near objects are gravitationally bound, a vacuum energy still weakly repels and so all objects are slightly larger than they would be. Then expansion would be intrinsic? So not emergent?

Haha. When there is a discussion of absurdity, it is hard not to mention Monty Python. That phrase is almost a shibboleth for Python fans.

Haha! A little embarrassed to admit how much fun I had with this webpage... https://www.omniglot.com/language/phrases/hovercraft.htm

Oh, right, Google wouldn't recognize a lot of creole languages. Owat eyfule amei = Oh what a fool am I. And here is a phrase in Morse Code.... -- -.-- / .... --- ...- . .-. -.-. .-. .- ..-. - / .. ... / ..-. ..- .-.. .-.. / --- ..-. / . . .-.. ... Cheers.

I thought that might be the case. Owat eyfule amei.

Hvorfor? å være absurd? C'est la navet! You just broke Google Translate. 😀

Plus one, mainly for a clear explanation but also because this (below) on frequency doubling is one of the coolest things I've learned here. I already sense that frequency doubling of an IR laser makes a green beam is going to become a staple of my cocktail party chatter. (an excellent reason to avoid cocktail parties)

Sourdough, the slow fermented kind has always been the least problem bread for me, and very tasty. The fermentation also breaks down starches that are difficult for some guts to digest, referred to as FODMAP. The Dutch also like to use emmer wheat, which is an ancient grain quite low in gluten and more tolerated by people with gluten sensitivity.

Amen. It's hard to describe the stark improvement I found eliminating wheat from my diet. And most "multigrain" breads are still at least fifty percent white flour, which is crap. I like whole rolled oats, which are one of those foods which is exactly what it says it is. And no brain-fogging, nap-inducing gluten. I would not be surprised if future research discovered that half the population has NCGI, non-coeliac gluten intolerance.

Agree. The alt-azimuth mount makes it useless at higher mag or photos, as you noted, but it's a great "light bucket" (what we called it, back in my astronomy club days, for its large aperture) for low mag viewing. As @Genady mentioned there are also binoculars, for a wide field, ultimate portability. And their chromatic aberration isn't a problem unless they are very cheap. If you want to do real astronomy, be sure and get an equatorial mount. That has a clock drive which follows the stars in their apparent motion. For planets, you would do well with the Dobson or a Maksutov or some other Cassegrain, because planets benefit from the larger aperture. For deep-space objects, it's hard to beat the classic Newtonian - good price, too.

C'est la vie, C'est la guerre, C'est la pomme de terre! "what makes something absurd"

Made me think of Kiki Rockwell, with her witch/folk stuff. And weirdly, though the vibe is somewhat different, Wet Leg. Here's a rather whimsical track from these Isle of Wightians... Great voices, great sense of humor. See also All Day Long on the Chaise Longue, or Ur Mum.