radial

Examples of radial in the following topics:

• Animal Characterization Based on Body Symmetry

  • Animals can be classified by three types of body plan symmetry: radial symmetry, bilateral symmetry, and asymmetry.
  • Radial symmetry is the arrangement of body parts around a central axis, like rays on a sun or pieces in a pie.
  • Radially symmetrical animals have top and bottom surfaces, but no left and right sides, or front and back.
  • All true animals, except those with radial symmetry, are bilaterally symmetrical.
  • This is termed secondary radial symmetry.

• Overview of Non-Uniform Circular Motion

  • The change in speed has implications for radial (centripetal) acceleration.
  • A change in $v$ will change the magnitude of radial acceleration.
  • The greater the speed, the greater the radial acceleration.
  • 2: The radial (centripetal) force is constant (like a satellite rotating about the earth under the influence of a constant force of gravity).
  • The important thing to note here is that, although change in speed of the particle affects radial acceleration, the change in speed is not affected by radial or centripetal force.

• Stress and Strain

  • If the charge is positive, field lines point radially away from it; if the charge is negative, field lines point radially towards it.
  • The above equation is defined in radial coordinates which can be seen in .
  • The electric field of a positively charged particle points radially away from the charge.
  • The electric field of a negatively charged particle points radially toward the particle.
  • The electric field of a point charge is defined in radial coordinates.

• Electric Field from a Point Charge

  • If the charge is positive, field lines point radially away from it; if the charge is negative, field lines point radially towards it .
  • The above equation is defined in radial coordinates, which can be seen in .
  • The electric field of a positively charged particle points radially away from the charge.
  • The electric field of a negatively charged particle points radially toward the particle.
  • The electric field of a point charge is defined in radial coordinates.

• Body Plans

  • Animal body plans can have varying degrees of symmetry and can be described as asymmetrical, bilateral, or radial.
  • They can be asymmetrical, radial, or bilateral in form .
  • Radial symmetry describes an animal with an up-and-down orientation: any plane cut along its longitudinal axis through the organism produces equal halves, but not a definite right or left side.
  • The sponge is asymmetrical, the sea anemone has radial symmetry, and the goat has bilateral symmetry.

• Pulse

  • Pulse is a measurement of heart rate by touching and counting beats at several body locations, typically at the wrist radial artery.
  • Pulse rate, or velocity, is usually measured either at the wrist from the radial artery and is recorded as beats per minute.
  • The pulse deficit (difference between heart beats and pulsations at the periphery) is determined by simultaneous palpation at the radial artery and auscultation at the heart apex.
  • Radial pulse is commonly measured using three fingers, the finger closest to the heart is used to occlude the pulse pressure, the middle finger is used get a crude estimate of the blood pressure, and the finger most distal to the heart is used to nullify the effect of the ulnar pulse as the two arteries are connected via the palmar arches.
  • Measurement of the pulse can occur at several locations, including the radial artery shown here.

• Tennis Elbow, Little-League Elbow, and Dislocation of the Radial Head

  • The technical term for the injury is radial head subluxation.
  • Radial head subluxation is a common pediatric presentation generally occurring between the ages of one and three years, although it can happen anytime between six months of age and seven years.
  • After age three, children's joints and ligaments gradually grow stronger, making radial head subluxation less likely to occur.
  • To resolve the problem, the affected arm must be held by the attending physician with one hand/finger on the radial head and the other grasping the hand.
  • Left elbow-joint, showing posterior and radial collateral ligaments.

• Three-Dimensional Coordinate Systems

  • The cylindrical system uses two linear parameters and one radial parameter:
  • The cylindrical coordinate system is like a mix between the spherical and Cartesian system, incorporating linear and radial parameters.

• A single electron in a central field

  • If the potential is a function of the radial distance from the nucleus alone the Schrodinger equation is separable,
  • $V(r)$ is the radial potential and the term proportional to $l(l+1)$ is the centripetal potential.
  • Because the equation does not depend on $m$, the radial wavefunction only depends on $l$.
  • Because the radial eigenfunctions for different values of $l$ satisfy different equations, there is no orthogonality relation for the radial wavefunctions with different $l$ values.

• Ulna and Radius (The Forearm)

  • Laterally to the trochlear notch lies the radial notch, which articulates with the head of the radius to form the proximal radioulnar joint.
  • Proximally, the radius terminates with a disk-shaped head that articulates with the capitulum of the humerus and the radial notch of the ulna.
  • Immediately below the head lies the radial tuberosity to which the biceps brachii attaches.