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ALTERNATIVES. “There are various mechanisms that may account for the antiquark flavour asymmetry of the proton.” https://www.nature.com/articles/s41586-021-03282-z View in LinkedIn

ZINGER. “Indeed, several authors assumed that at some low momentum scale the sea quarks and gluons vanish, and at high momentum scales they are all generated by gluon radiation and then gluon splitting. These assumptions were used to describe successfully the existing data in the late 1970s.” https://www.nature.com/articles/s41586-021-03282-z View in LinkedIn

FRAGMENT FROM NATURE continues from last weekend and concludes this weekend on the theme of dressed photons, in a paper by a Japanese group. They outline how traditional optics has misunderstood some important truths and elaborate the experimental support for this position, and in doing so propose a new optics paradigm with practical applications. View in LinkedIn

IGNORED PARADIGM. “One should bear in mind, however, that the concept of a DP first proposed by one of the authors (M.O.) still seems to be either ignored or tacitly understood differently by the mainstream researchers in optical sciences because of the conceptual difficulty of dealing with off-shell quantities in the midst of field interactions.” (DP = dressed photon). https://www.mdpi.com/2073-8994/12/8/1244/htm View in LinkedIn

ACCOMPLISHING THE IMPOSSIBLE. “Figure 1 shows typical experimental setups for creating a DP. Studies on DPs are now rapidly progressing, yielding innovative generic technologies of “small light”, which accomplish the impossible in a variety of application fields.” (DP = dressed photon). https://www.mdpi.com/2073-8994/12/8/1244/htm View in LinkedIn

The usual hexagonal geometry of basalt columns are clearly not the case in this volcano as seen in these lovely cross sections used for a tunnel and a truncated bridge. View in LinkedIn

BLACK HOLE LABOR. “Twenty-three thousand. According to computer scientist Katie Bouman, that is how many people were involved in creating the first ever image of a black hole, taken by the Event Horizon Telescope (EHT) in 2019.” https://lnkd.in/dAT43ika View in LinkedIn

COMMON VIEW V. “Crystalline silicon has a very low light emission efficiency and is thus unsuitable for use as an active medium in light-emitting devices.” https://www.mdpi.com/2073-8994/12/8/1244/htm View in LinkedIn

COMMON VIEW IV. “An electron cannot be optically excited if the transition between the two electric energy levels is electric dipole forbidden.” https://www.mdpi.com/2073-8994/12/8/1244/htm View in LinkedIn

COMMON VIEW III. “For optical excitation of an electron, the photon energy must be equal to or higher than the energy difference between the relevant two electronic energy levels.” https://www.mdpi.com/2073-8994/12/8/1244/htm View in LinkedIn