Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Hottest Latest Alphabetical (A-Z) Alphabetical (Z-A)
Type:
All Topic Review Biography
Topic Review
Holomovement
The holomovement brings together the holistic principle of "undivided wholeness" with the idea that everything is in a state of process or becoming (David Bohm calls it the "universal flux"). In this interpretation of physics wholeness is not considered static, but as a dynamic interconnected process. The concept is presented most fully in Wholeness and the Implicate Order, published in 1980.
  • 2.5K
  • 06 Oct 2022
Topic Review
Homogeneity
In physics, a homogeneous material or system has the same properties at every point; it is uniform without irregularities. A uniform electric field (which has the same strength and the same direction at each point) would be compatible with homogeneity (all points experience the same physics). A material constructed with different constituents can be described as effectively homogeneous in the electromagnetic materials domain, when interacting with a directed radiation field (light, microwave frequencies, etc.). Mathematically, homogeneity has the connotation of invariance, as all components of the equation have the same degree of value whether or not each of these components are scaled to different values, for example, by multiplication or addition. Cumulative distribution fits this description. "The state of having identical cumulative distribution function or values".
  • 1.9K
  • 15 Nov 2022
Topic Review
Horologium
Horologium, Latin for "clock" or "timepiece," is a faint constellation located in the southern celestial hemisphere. It was first described by the French astronomer Nicolas-Louis de Lacaille in 1756.
  • 229
  • 15 Mar 2024
Topic Review
Horror Vacui
In physics, horror vacui, or plenism (/ˈpliːnɪzəm/), commonly stated as "nature abhors a vacuum", is a postulate attributed to Aristotle, who articulated a belief, later criticized by the atomism of Epicurus and Lucretius, that nature contains no vacuums because the denser surrounding material continuum would immediately fill the rarity of an incipient void. He also argued against the void in a more abstract sense (as "separable"), for example, that by definition a void, itself, is nothing, and following Plato, nothing cannot rightly be said to exist. Furthermore, insofar as it would be featureless, it could neither be encountered by the senses, nor could its supposition lend additional explanatory power. Hero of Alexandria challenged the theory in the first century CE, but his attempts to create an artificial vacuum failed. The theory was debated in the context of 17th-century fluid mechanics, by Thomas Hobbes and Robert Boyle, among others, and through the early 18th century by Sir Isaac Newton and Gottfried Leibniz.
  • 509
  • 08 Oct 2022
Topic Review
Hydra
Hydra, known as the Water Snake, is a prominent constellation located in the southern celestial hemisphere. It is the largest of the 88 modern constellations in terms of area and is best observed from the Southern Hemisphere during the months of February and March. 
  • 272
  • 15 Mar 2024
Topic Review
Hydrus (Constellation)
Hydrus is a small and faint constellation in the southern celestial hemisphere. It is named after the Latin word for "male water snake" and is often depicted as a water snake winding its way through the southern skies. 
  • 126
  • 15 Mar 2024
Topic Review
Hyperpolarization
Hyperpolarization is the nuclear spin polarization of a material in a magnetic field far beyond thermal equilibrium conditions determined by the Boltzmann distribution. It can be applied to gases such as 129Xe and 3He, and small molecules where the polarization levels can be enhanced by a factor of 104-105 above thermal equilibrium levels. Hyperpolarized noble gases are typically used in magnetic resonance imaging (MRI) of the lungs. Hyperpolarized small molecules are typically used for in vivo metabolic imaging. For example, a hyperpolarized metabolite can be injected into animals or patients and the metabolic conversion can be tracked in real-time. Other applications include determining the function of the neutron spin-structures by scattering polarized electrons from a very polarized target (3He), surface interaction studies, and neutron polarizing experiments.
  • 762
  • 03 Nov 2022
Topic Review
Identification of Soccer Scoring Techniques
The immense charm of soccer to millions of players and spectators can be traced back to the most prime idea of the game: to score goals—an idea that will always be captivating. This basic idea shapes the soccer scoring technique (SST) to be the crucial and final determinant of every offensive-maneuver fate of any team. Therefore, the identification of SSTs is particularly important.
  • 490
  • 01 Nov 2022
Topic Review
Image-Guided Surgical and Pharmacotherapeutic Routines
Medical procedures have moved from a direct fully invasive “hand-eye” pairing process to a minimal invasive (MI) process with robot-imaging pairing in a closed-loop treatment architecture. Acts related to the invasive nature mainly concern surgical interventions (SIs) and the restricted dispensing of drugs. Currently, both of these procedures can use MI image-guided (IG) robotics, which enables patient comfort and safety, and medical staff accuracy and efficiency.
  • 150
  • 15 Dec 2023
Topic Review
Imaging Biomarkers
Imaging biomarkers (IBs) have been proposed in medical literature that exploit images in a quantitative way, going beyond the visual assessment. These IBs can be used in the diagnosis, prognosis, and response assessment of several pathologies and are very often used for patient management pathways.
  • 296
  • 26 Oct 2023
  • Page
  • of
  • 118
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Video Production Service
Feedback