“In the fuzzball paradigm, the black hole microstates have no interior, and radiate unitarily from their surface through quanta of energy E ∼ T. But quanta with E ≫ T impinging on the fuzzball create large collective excitations of the fuzzball surface. The dynamics of such excitations must be studied as an evolution in superspace, the space of all fuzzball solution |Fi⟩.”

[A model with no firewall, arXiv preprint arXiv:1506.04342, 2015, https://arxiv.org/abs/1506.04342]

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Samir D. Mathur3

Indian physicist

Dan Flores (1948) American historian

The Natural West: Environmental History in the Great Plains and Rocky Mountains (2003)

“[T]he space constant K… "curvature" may in principle at least be determined by measurement on the surface, without recourse to its embodiment in a higher dimensional space.”

Howard P. Robertson (1903–1961) American mathematician and physicist

Geometry as a Branch of Physics (1949)

“Heisenberg finds that facts of observation lead uniquely and inevitably to the theoretical structure known as matrix mechanics. This shows that the total radiation in any region of empty space can change only by a single complete quantum at a time. Thus not only in the photo-electric phenomenon, but in all other transfers of energy through space, energy is always transferred by complete quanta; fractions of a quantum can never occur. This brings atomicity into our picture of radiation just as definitely as the discovery of the electron and its standard charge brought atomicity into our picture of matter and of electricity.”

James Jeans (1877–1946) British mathematician and astronomer

Physics and Philosophy (1942)

“A very simple experiment shows that a black surface is a better radiator, or pours out more energy when hot, than a surface which does not absorb fully, but reflects much of the radiation which falls upon it. If a platinum foil with some black marks on it be heated to redness, the marks, black when cold, are much brighter than the surrounding metal when hot; they are, in fact, pouring out much more visible radiation than the metal.”

John Henry Poynting (1852–1914) physicist

[Smithsonian Report for 1904, 185–193, Radiation in the solar system, https://books.google.com/books?id=2G1xpr2w4PUC&pg=PA186] (p. 185)

“On Mondays, Wednesdays, and Fridays we use the wave theory; on Tuesdays, Thursdays, and Saturdays we think in streams of flying energy quanta or corpuscles.”

William Henry Bragg (1862–1942) British scientist

in Electrons & Ether Waves : being the twenty-third Robert Boyle lecture, on 11th May 1921, Oxford University Press, 1921, p. 11.

“I also knew the formula that expresses the energy distribution in the normal spectrum. A theoretical interpretation therefore had to be found at any cost, no matter how high. It was clear to me that classical physics could offer no solution to this problem, and would have meant that all energy would eventually transfer from matter to radiation. ...This approach was opened to me by maintaining the two laws of thermodynamics. The two laws, it seems to me, must be upheld under all circumstances. For the rest, I was ready to sacrifice every one of my previous convictions about physical laws. ...[One] finds that the continuous loss of energy into radiation can be prevented by assuming that energy is forced at the outset to remain together in certain quanta. This was purely a formal assumption and I really did not give it much thought except that no matter what the cost, I must bring about a positive result.”

Max Planck (1858–1947) German theoretical physicist

Letter to Robert W. Wood (October 7, 1931) in Archive for the History of Quantum Physics, Microfilm 66, 5, as cited in Thomas S. Kuhn, Black-Body Theory and the Quantum Discontinuity, 1894–1912 (1978) pp. 132, 288. Translation of the entire letter, which is follow above is in Armin Hermann, Frühgeschiche der Quantentheorie (1899–1913) Mosbach/Baden: Physik Verlag (1969), transl. Claude W. Nash, p. 23 of the translation; and also in M. S. Longair,Theoretical Concepts in Physics(Cambridge and NewYork: Cambridge University Press, 1984), ch. 6–12, p. 222. All as quoted/cited by Clayton A. Gearhart, "Planck, the Quantum, and the Historians" http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.613.4262&rep=rep1&type=pdf, Physics in Perspective, 4 (2002) 170-215.