Equatorial Bulge
Equatorial Bulge - Related Videos
01:06
Multipotency and Niche of Bulge Stem Cell
0 Views •
2023
A hair follicle or HF is a small part of the skin that produces the hair shaft. Paul Gerson Unna was the first to observe a bulge in the human hair follicle's outer root sheath (ORS). The bulge is present between the sebaceous gland and the arrector pili muscle and is the niche for hair follicle stem cells (HFSCs). The bulge is also a niche for melanocyte stem cells, and their loss results in graying of hair. The HFSCs express Sox9 and Lhx2, which help them maintain stemness and prevent...
04:01
VSEPR Theory and the Effect of Lone Pairs
0 Views •
2020
Effect of Lone Pairs of Electrons on Molecule Geometry It is important to note that electron-pair geometry around a central atom is not the same thing as its molecular structure. Molecular structure describes the location of the atoms, not the electrons. The geometry that includes all electron pairs is the electron-pair geometry. The electron-pair geometries describe all regions where electrons are located, bonds as well as lone pairs. The structure that includes only the placement of the...
02:52
VSEPR Theory and the Basic Shapes
0 Views •
2020
Overview of VSEPR Theory Valence shell electron-pair repulsion theory (VSEPR theory) enables us to predict the molecular structure, including approximate bond angles around a central atom, of a molecule from an examination of the number of bonds and lone electron pairs in its Lewis structure. The VSEPR model assumes that electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between these electron pairs by maximizing the distance between them.
07:56
Sequential Application of Glass Coverslips to Assess the Compressive Stiffness of the Mouse Lens: Strain and Morphometric Analyses
0 Views •
Cited by 28 •
2016
Age-related increases in eye lens stiffness are linked to presbyopia. This protocol describes a simple, cost-effective method for measuring mouse lens stiffness. Mouse lenses, like human lenses, become stiffer with age. This method is precise and can be adapted for lenses from larger animals.
08:29
Mouse Epidermal Neural Crest Stem Cell (EPI-NCSC) Cultures
0 Views •
Cited by 15 •
2008
Here we show our method to isolate mouse epidermal neural crest stem cells (EPI-NCSC). Technique involves micro-dissecting whisker follicles, isolating the bulge and placeing it into tissue culture. EPI-NCSC start to emigrate from bulge explants onto the substratum within 3 - 4 days.
FAQs
Rotation creates a centrifugal effect directed away from the rotation axis. Material at the equator is farthest from that axis, so the rotational effect opposing gravity is strongest there. This difference allows equatorial material to remain farther outward than polar material, producing a measurable departure from spherical shape in a rotating astronomical body.
In a fluid-like body, the surface adjusts until the effects associated with gravity and rotation are balanced in the overall equilibrium configuration. Because rotation acts most strongly around the equator, the resulting surface extends outward there and is compressed relative to a sphere toward the poles. The equilibrium shape therefore records the body’s rotational state.
The uneven distribution of mass associated with an equatorial bulge changes the gravitational field from that of a perfectly spherical body. That altered field can influence satellite motion, because an orbit responds to the body’s actual mass distribution rather than only to its total mass. Accounting for this shape is therefore important when interpreting rotational dynamics.
Geodesy uses the difference between equatorial and polar dimensions to represent Earth’s non-spherical shape. Earth’s equatorial radius is about 21 kilometers greater than its polar radius, so models of sea level and planetary geometry must accommodate this systematic variation. Including the bulge helps produce physically consistent descriptions of elevation, shape, and gravity-related measurements.
Surface gravity is influenced by the body’s rotation and by the distance of its surface from the center and rotation axis. Since the equatorial region is displaced outward and experiences the strongest centrifugal opposition to gravity, the bulge must be included when constructing realistic surface-gravity models. This is especially important for interpreting measurements across different parts of Earth.
The bulge provides evidence about how rotation interacts with the distribution of material inside a planetary body. Comparing its shape with rotational dynamics and gravitational effects helps physicists investigate interior structure and mass distribution. In this way, an observable difference between equatorial and polar radii becomes a tool for connecting surface geometry with deeper planetary properties.