Corpus evidence — top 10 passages

Most-relevant passages from the entire indexed corpus (67,286 paragraph chunks across YouTube transcripts, PubMed, arXiv, archive.org, Stanford Encyclopedia of Philosophy, OpenAlex, and more) ranked by semantic similarity (bge-small-en-v1.5).

1. 01 · yt0.782

   It's a pushing out that it does. It's a pressure, an outward pressure, that the gravitational force is pushing against. ♪ ♪ Overall, the universe is accelerating in its expansion because of this dark energy effect. ♪ ♪ NARRATOR: Today, scientists estimate it is overwhelmingly the most prevalent form of energy in the universe. RHODES: We thought we knew the constituents of the universe and how it was evolving over time. Al of a sudden, we found out that, no, we didn't know, because the biggest component of the universe wasn't dark matter, it was dark energy. NARRATOR: So, what exactly is dark e…

   yt/5BNPeFHU7QQ-decoding-the-universe-cosmos-full-documentary-nova-pbs/transcript.txt

2. 02 · openalex0.764

   Reply to "Comment on `Time in quantum gravity: An hypothesis' " — Carlo Rovelli — cited 58x (2011) Cosmological constant in spinfoam cosmology — Eugenio Bianchi Thomas Krajewski Carlo Rovelli — cited 58x (2013) Evidence for Maximal Acceleration and Singularity Resolution in Covariant Loop Quantum Gravity — Carlo Rovelli Francesca Vidotto — cited 58x (2011) Generalized spinfoams — You Ding Muxin Han Carlo Rovelli — cited 57x (2008) Stepping out of Homogeneity in Loop Quantum Cosmology — Carlo Rovelli Francesca Vidotto — cited 57x (2018) Physics Needs Philosophy. Philosophy Needs Physics — Carlo…

   openalex/A5050105545/info.md

3. 03 · yt0.763

   For example, the amount of entropy or the balance between matter and antimatter in the universe. Now all of these constants and quantities fall into an extraordinarily narrow range of life-permitting values. Were these constants or quantities to be altered by less than a hair's breath, the balance would be destroyed and life would not exist. To give just one example: The atomic weak force, if it were altered by as little as one part out of 10 to the 100th power would not have permitted a life-permitting universe. Now there are three possible explanations of this remarkable fine tuning: physica…

   yt/0tYm41hb48o-does-god-exist-william-lane-craig-vs-christopher-hitchens-fu/transcript.txt

4. 04 · blog0.761

   Robertson’s conclusion exhibits this point clearly and explicitly: We have examined, from the operational standpoint, the problem of determining the most general kinematical background suitable for an idealized universe in which the cosmological principle holds. Allowing the fundamental observers the use only of clocks and theodolites, and granting them the possibility of sending and receiving we have shown that for each given mode of motion x(t) there necessarily exists a quadratic line element which is invariant, in form as well as in fact, under transformation from one fundamental observer …

   blog/plato-stanford-edu/cosmology-methodological-debates-in-the-1930s-and-1940s.md

5. 05 · yt0.760

   Now to the uh proverbial uh the implications of the dark energy changing is are astonishing if indeed it's true. There are many things that can happen. The cosmological constant can slowly change sort of asmtoically changing to some value. It could get bigger. It could get smaller, right? It changes. It's not going to be a constant. It won't be a constant, right? So, the dark energy term will evolve. Can't evolve. We parameterize it by these two terms, omega or wa. Those are both the equations of state which govern the existence and the the net effect of the scale factor on distance. How the s…

   yt/BVkUya368Es-why-people-are-terrified-of-eric-weinstein-s-geometric-unity/transcript.txt

6. 06 · blog0.758

   Dingle’s article appeared back-to-back with an appraisal of kinematic relativity by the important American cosmologist H. P. Robertson (Robertson 1933a). Robertson focussed upon Milne’s hypothetico-deducivism as well, noting that the cosmological principle in kinematic relativity functions as an a priori rule, rather than as an empirical generalization, its status in relativistic cosmology. Robertson otherwise is not especially taken with Milne’s theory, limiting himself to remarks suggesting that, where they can be compared, kinematic relativity and relativistic cosmology apparently are simil…

   blog/plato-stanford-edu/cosmology-methodological-debates-in-the-1930s-and-1940s.md

7. 07 · yt0.758

   That's a it's a good question. And here's the answer. When we're talking about the expansion of space, the driver of that is the gravitational force. In Einstein's theory in the original version without using this more exotic idea of inflation that you make use of, it's the very fact that space can stretch or it can contract and it is matter and energy that sources those changes in size. And that's the origin of an expanding universe. Inflation is the same basic idea. It's just the source of the gravitational force is a little different. It's a uniform energy as opposed to clumpy chunks of mat…

   yt/nH8c60ZbSgw-live-q-a-with-brian-greene-world-science-festival/transcript.txt

8. 08 · blog0.756

   Second, the expansion rate varies as different types of matter come to dominate the dynamics. As shown by (\(\ref{eq:cons}\)), the energy density for different types of matter and radiation dilutes at different rates: for example, pressureless dust (\(p=0\)) dilutes as \(\propto R^{-3}\), radiation (\(p=\rho/3\)) as \(\propto R^{-4}\), and the cosmological constant (\(p=-\rho\)) remains (as the name suggests) constant. The SM describes the early universe as having a much higher energy density in radiation than matter. This radiation-dominated phase eventually transitions to a matter-dominated …

   blog/plato-stanford-edu/philosophy-of-cosmology.md

9. 09 · pubmed0.754

   Within conventional big bang cosmology, it has proven to be very difficult to understand why today's cosmological constant is so small. In this paper, we show that a cyclic model of the universe can naturally incorporate a dynamical mechanism that automatically relaxes the value of the cosmological constant, including contributions to the vacuum density at all energy scales. Because the relaxation time grows exponentially as the vacuum density decreases, nearly every volume of space spends an overwhelming majority of the time at the stage when the cosmological constant is small and positive, a…

   pubmed/PMID-16675662-why-the-cosmological-constant-is-small-and-positive/info.md

10. 10 · blog0.750

    218–9) Setting aside questions about the strength of these arguments for the present, how then are we to give an acceptable intrinsic account of motion? According to Priest, the only acceptable answer is Hegel’s: that motion is inconsistent. Support comes from Leibniz’ Continuity Condition (LCC). This is essentially the thesis, suitably qualified, that whatever holds up to a limit, holds at the limit. Priest’s argument for the LCC appeals to causality. He describes change violating the LCC as “capricious” (p. 210). Humeans might be able to accept it, but for them there are no connections, noth…

    blog/plato-stanford-edu/change-and-inconsistency.md