matter

Examples of matter in the following topics:

• Grey and White Matter

  • The basic pattern of the CNS is a central cavity surrounded by gray matter made up of neuronal cell bodies external to which is the white matter which is made up of myelinated axons.
  • The basic pattern of the CNS is a central cavity surrounded by gray matter external to which is the white matter.
  • Grey matter is distributed at the surface of the cerebral hemispheres and cerebellum, as well as in the depths of the cerebrum, cerebellar, brainstem, and spinal grey matter.
  • Myelin also gives white matter its characteristic color.
  • This MRI highlights the location of white matter in the brain.

• Matter and Antimatter

  • Antimatter is composed of antiparticles, which have the same mass as particles of ordinary matter but opposite charge and quantum spin.
  • Matter-antimatter reactions have practical applications in medical imaging, such as in positron emission tomography (PET).
  • Antiparticles bind with each other to form antimatter in the same way that normal particles bind to form normal matter.
  • Almost all matter observable from the earth seems to be made of matter rather than antimatter.
  • Antimatter galaxies, if they exist, are expected to have the same chemistry and absorption and emission spectra as normal-matter galaxies, and their astronomical objects would be observationally identical, making them difficult to distinguish from normal-matter galaxies.

• Spinal Cord White Matter

  • White matter in non-elderly adults is 1.7-3.6% blood.
  • White matter is the tissue through which messages pass between different areas of gray matter within the nervous system.
  • Aggregates of gray matter such as the basal ganglia and brain stem nuclei are spread within the cerebral white matter.
  • "Type 1 astrocytes" had a fibroblasts appearance and resided in both gray matter and white matter.
  • The spinal cord diagram showing location of the white matter surrounding grey matter.

• Content Sourcing

  • Boundless content is sourced from open educational resources and curated by subject-matter experts.

• Phases of Matter

  • There are four states of matter: solid, liquid, gas, and plasma.
  • A solid is in a state of matter that maintains a fixed volume and shape.
  • Matter in the plasma state has variable volume and shape.
  • Plasma is the most common form of visible matter in the universe .
  • Solids are in a state of matter that maintains a fixed volume and shape.

• The Kinetic Molecular Theory of Matter

  • The kinetic molecular theory of matter explains how matter can change among the phases of solid, liquid, and gas.
  • An application of the theory is that it helps to explain why matter exists in different phases (solid, liquid, and gas) and how matter can change from one phase to the next.
  • There are spaces between particles of matter.
  • The kinetic theory of matter is also illustrated by the process of diffusion.
  • Explore how states of matter are related to the strength of intermolecular attractions.

• Wave Nature of Matter Causes Quantization

  • The wave nature of matter is responsible for the quantization of energy levels in bound systems.
  • To consider why wave nature of matter in bound systems leads to quantization, let's consider an example in classical mechanics.
  • The wave nature of matter is responsible for the quantization of energy levels in bound systems.
  • Just like a free string, the matter wave of a free electron can have any wavelength, determined by its momentum.
  • Explain relationship between the wave nature of matter and the quantization of energy levels in bound systems

• Building Community

  • Boundless works with a community of educators and subject-matter experts to continually improve and expand our content.
  • Boundless content is created and curated by a community of educators and subject-matter experts.
  • All edits are reviewed by the Boundless team and our subject-matter experts before going live on our site.
  • Boundless also works with those within our community of subject-matter experts who have their own textbooks or materials they are looking to publish.

• de Broglie and the Wave Nature of Matter

  • The concept of "matter waves" or "de Broglie waves" reflects the wave-particle duality of matter.
  • In quantum mechanics, the concept of matter waves (or de Broglie waves) reflects the wave-particle duality of matter.
  • De Broglie's hypothesis is that this relationship $\lambda = \frac{h}{p}$, derived for electromagnetic waves, can be adopted to describe matter (e.g. electron, neutron, etc.) as well.
  • Therefore, the presence of any diffraction effects by matter demonstrated the wave-like nature of matter.
  • Just as the photoelectric effect demonstrated the particle nature of light, the Davisson–Germer experiment showed the wave-nature of matter, thus completing the theory of wave-particle duality.

• White Matter of the Cerebrum

  • White matter is composed of myelinated axons and glia and connects distinct areas of the cortex.
  • White matter is one of the two components of the central nervous system.
  • The axons of white matter transmit signals from various grey matter areas (the locations of nerve cell bodies) of the cerebrum to each other and carry nerve impulses between neurons.
  • White matter appears white in this dissected human brain, while gray matter appears darker.
  • White matter is composed largely of myelinated axons.