SubjectsSubjects(version: 945)
Course, academic year 2023/2024
   Login via CAS
Potential of Regular Bodies - NGEO039
Title: Potenciál pravidelných těles
Guaranteed by: Department of Geophysics (32-KG)
Faculty: Faculty of Mathematics and Physics
Actual: from 2022
Semester: both
E-Credits: 3
Hours per week, examination: 1/1, MC [HT]
Capacity: unlimited
Min. number of students: unlimited
4EU+: no
Virtual mobility / capacity: no
State of the course: cancelled
Language: Czech
Teaching methods: full-time
Teaching methods: full-time
Note: you can enroll for the course in winter and in summer semester
Guarantor: doc. RNDr. Oldřich Novotný, CSc.
Classification: Physics > Geophysics
Annotation -
Last update: T_KG (20.05.2002)
Newtonian and logarithmic potentials, potentials of simple bodies. Elliptic integrals, the potential of a rectangular parallelepiped and especially the potentials of an ellipsoid. Students will be acquainted with difficult multiple integrals which find numerous applications in physics, astronomy and geophysics. The subject may also be interesting for students of mathematics, since many famous mathematicians participated in solving the particular problems (Maclaurin, Lagrange, Laplace, Gauss, Jacobi and others).
Aim of the course -
Last update: T_KG (11.04.2008)

Computing difficult multiple integrals that describe the potentials and intensities for regular homogeneous bodies, including ellipsoids. The lecture may represent an interest for students of geophysics, applied geophysics, astronomy, physics, and also as an extension of the integral calculus for mathematicians.

Literature - Czech
Last update: RNDr. Pavel Zakouřil, Ph.D. (05.08.2002)
  • O.D. Kellogg: Foundations of Potential Theory. Springer-Verlag, Berlin 1967 (prvně vydáno 1929).
  • R.Z. Muratov: Potencialy ellipsoida. Atomizdat, Moskva 1976.
  • M. Pick, J. Pícha, V. Vyskočil: Úvod ke studiu tíhového pole Země. Academia, Praha 1973.

Teaching methods -
Last update: T_KG (11.04.2008)

Lecture + exercises

Syllabus -
Last update: T_KG (20.05.2002)
1. Approaches to computing the intensity and potential of the gravitational, electrostatic and magnetostatic fields

Integral representation, Gauss' law, Laplace's and Poisson's equations. Gravitational and electrostatic field of a homogeneous sphere and spherical shell; examples of applications in physics, geophysics and astronomy. Homogeneous plate and straight line; non-existence of the Newtonian potential.

2. "Two-dimensional" bodies

Derivation of the formulae for the intensity and potential. Logarithmic potential and its relation to the Newtonian potential. Examples from applied geophysics.

3. Homogeneous circle

Expression of the potential in terms of an elliptic integral. Computing elliptic integrals by means of series and arithmetico-geometrical mean. Further applications: expansion of the period of the mathematical pendulum; gravitational field of a planetary ring; charged circular disc.

4. Homogeneous ellipsoid

Calculation of the gravitational field of a homogeneous triaxial ellipsoid for an inner point by Lagrange's method. Newton's theorem. Confocal ellipsoids. Ivory's theorem; field at an outer point. Gravitational field of an ellipsoid of revolution. Equilibrium figure of an rotating liquid; Maclaurin's and Jacobi's ellipsoids.

References:

  • O.D. Kellogg: Foundations of Potential Theory. Springer-Verlag, Berlin 1967 (first edition 1929).
  • M. Pick, J. Picha, V. Vyskocil: Theory of the Earth's Gravity Field. Academia, Prague 1973.

 
Charles University | Information system of Charles University | http://www.cuni.cz/UKEN-329.html