Sökning: "magnetism"

Visar resultat 21 - 25 av 80 uppsatser innehållade ordet magnetism.

  1. 21. Experimentera mera! : En designbaserad studie med utgångspunkt i de fysiska krafterna gravitation, magnetism, och statisk elektricitet.

    Uppsats för yrkesexamina på grundnivå, Karlstads universitet/Fakulteten för humaniora och samhällsvetenskap (from 2013)

    Författare :Kristina Hanson; Emma Nordlund; [2021]
    Nyckelord :Gravity; magnetism; physics in preschool; science in preschool and static electricity; Fysik i förskolan; magnetism; naturvetenskap i förskolan; gravitation och statisk elektricitet;

    Sammanfattning : Abstract The purpose of the study is to contribute knowledge about working with physics in preschool, and how the youngest children perceive natural science phenomena, and to make visible how educators work with the subject of physics. Our focus is forces, and we therefore designed and allowed the children and educators to conduct experiments on, gravity, static electricity and magnetism. LÄS MER

  3. 22. Optimal Demagnetization of Transformer After Winding Resistance Measurements

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Niclas Grönström; [2020]
    Nyckelord :;

    Sammanfattning : In this thesis, transformer demagnetization in connection to winding resistance tests is investigated. In transformer testing, winding resistance measurement (WRM) is an important test used to detect winding or connection faults. It is common practice to measure the resistance by injecting a DC current into the windings of a transformer. LÄS MER

  4. 23. Reducing the dynamical diffraction effects in EMCD by electron beam precession

    Kandidat-uppsats,

    Författare :Arvid Forsberg; [2020]
    Nyckelord :electron microscope; TEM; transmission electron microscope; EMCD; electron energy-loss magnetic chiral dichroism; magnetism; precession electron diffraction; crystals; crystallography;

    Sammanfattning : Dynamical effects are known to reduce the signal to noise ratio in EMCD measurements making them highly dependent on sample thickness. Precession of the electron beam has been shown to reduce these effects in ordinary crystallography. LÄS MER

  5. 24. Energiklossen : En normkreativ fordonsartefakt som bidrar till lek och lärande

    Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för ekonomi, teknik och samhälle

    Författare :Jennie Olausson; Emma Åsberg; [2020]
    Nyckelord :Teknisk design; Användarcentrerad design; Normkreativ design; Förskola; Artefakt; Digital teknik; Energi; Magnetism;

    Sammanfattning : Sustainable technology is implementing more and more in society and is going to be an important part in the future. That is why it is important to introduce and arouse children’s interest in these subjects already in preschool. LÄS MER

  7. 25. Out-of-plane Ferromagnetic Resonance (FMR) measurements on magnetic nanoparticle dispersions for biomedical sensor applications

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets fysik

    Författare :Markus Back; [2020]
    Nyckelord :Ferromagnetic; magnetic; resonance; FMR; EPR; nanoparticle; microwave; coplanar; waveguide; cavity; s-parameter; gilbert; damping; gyromagnetic; liquid; biosensor; landau; lifshits; spin; polymer; composites; engineering physics; teknisk fysik; magnetism; ferromagnetisk; vågledare; resonans; mikrovågsteknik; nanopartiklar;

    Sammanfattning : In this master work, we investigated the feasibility of a magnetic resonance measurement technique using magnetic nanoparticle dispersions in both liquid and solid form. The implementation is realised as a coplanar waveguide operating in the frequency range of 0.5 - 20 GHz and an electromagnet producing a static magnetic field of strength up to 1. LÄS MER