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This is an accepted version of this page This is the latest accepted revision, reviewed on 27 February 2025. Fear or disgust of objects with repetitive patterns of small holes or protrusions Not to be confused with Trypanophobia. The holes in lotus seed heads elicit feelings of discomfort or repulsion in some people. Trypophobia is an aversion to the sight of repetitive patterns or clusters of ...
[4] 80% were found to have very broad Balmer emission lines, suggesting that they are active galactic nuclei (AGN) and host supermassive black holes at their center. [7] Active galactic nuclei are defined as small regions in the centers of galaxies that emit copious amounts of energy in the form of bright jets and winds.
Nevertheless, while a diamond is being formed, it may not totally crystallize, leading to the presence of small dots of black carbon. These black spots have been classified to be those of graphite, pyrrhotite and pentlandite. These surface flaws resemble a small black dot and may affect the clarity of the stone depending on the size of the ...
Although most galaxies with no supermassive black holes are very small, dwarf galaxies, one discovery remains mysterious: The supergiant elliptical cD galaxy A2261-BCG has not been found to contain an active supermassive black hole of at least 10 10 M ☉, despite the galaxy being one of the largest galaxies known; over six times the size and ...
It is called preauricular sinus which, according to the U.S. National Institutes of Health, or NIH, "generally appears as a tiny skin-lined hole or pit, often just in front of the upper ear where ...
It was quickly identified that the optical changes that appeared for very small particles were due to quantum mechanical effects. [133] The term quantum dot first appeared in a paper first authored by Mark Reed in 1986. [144] According to Brus, the term "quantum dot" was coined by Daniel S. Chemla while they were working at Bell Labs. [145]
Overlaying the "hypotenuses" from both figures results in a very thin parallelogram (represented with the four red dots in the above image) with an area of exactly one grid square (Pick's theorem gives 0 [1] + 4 [2] / 2 − 1 = 1), which corresponds to the "missing" area.
1.5 cm – length of a very large mosquito; 1.6 cm – length of a Jaragua Sphaero, a very small reptile; 1.7 cm – length of a Thorius arboreus, the smallest salamander [111] 2 cm – approximate width of an adult human finger; 2.54 cm – 1 inch; 3.08568 cm – 1 attoparsec; 3.4 cm – length of a quail egg [112]