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Found 5 essays matching the above criteria.

  1. 1. Stokes' Theorem: Integration of Differential Forms Over Chains

    University essay from KTH/Fysik

    Author : Joel Wållberg; [2022]
    Keywords : Stokes theorem; Differential forms;

    Abstract : The aim of this work is to introduce differential forms on Euclidean space. The theory of differential forms provides a way of abstracting integration by formalising differentials over which an integral can be taken. The work builds towards Stokes’ Theorem for which a proof is given. READ MORE

  3. 2. Investigation of the magnetic fields of a young Sun-like star ∏1 UMa

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Lawen Ahmedi; [2020]
    Keywords : Magnetic field; star; young Sun; polarisation; Stokes vector;

    Abstract : In astronomy, the Sun has an important role. It keeps the solar-system together and is thesource for life, heat, light and energy to Earth. As any other star or planet, the Sun has amagnetic field. The magnetic field of the Sun has a great impact on the Sun itself as well asits surrounding. READ MORE

  4. 3. Investigation of recovery of stellar magnetic field geometries from simulated spectropolarimetric data

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Ahmed Al Kanale; [2017]
    Keywords : Magnetic Doppler Imaging MDI code INVERS10;

    Abstract : Powerful remote sensing techniques can covert time variability of polarization profiles of stellar spectral lines into vector magnetic fields maps of stellar surfaces. These techniques are widely applied to interpret observations but have been tested using only simplistic tests. READ MORE

  5. 4. Inference of chromospheric magnetic fields with the Ca II 8542 line

    University essay from Uppsala universitet/Teoretisk astrofysik

    Author : Filip Jennerholm Hammar; [2014]
    Keywords : Sun: chromosphere; Sun: magnetic topology; polarization; weak field approximation;

    Abstract : Several techniques exist for retrieving and studying information about the properties of the Solar atmosphere from the polarization state of spectral lines. These are commonly called spectral diagnostics. READ MORE

  6. 5. Modeling and Simulation of Elastic Rods with Intrinsic Curvature and Twist Immersed in Fluid

    University essay from KTH/Numerisk analys, NA

    Author : Babak Maboudi Afkham; [2014]
    Keywords : ;

    Abstract : Understanding the dynamics of thin elastic rods that are immersed in fluid is fundamental in explaining many problems that arise in biology, physics and engineering. Solving the coupled system of rod-fluid in 3D is usually very costly, however in case of low Reynolds number, the three-dimensional problem can be reduced a one-dimensional problem on the centerline of the rod. READ MORE