* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Demonstration of surface discharges (on DVD)
Edward Sabine wikipedia , lookup
Skin effect wikipedia , lookup
Magnetometer wikipedia , lookup
Magnetic stripe card wikipedia , lookup
Giant magnetoresistance wikipedia , lookup
Electromagnetism wikipedia , lookup
Electromagnetic field wikipedia , lookup
Lorentz force wikipedia , lookup
Neutron magnetic moment wikipedia , lookup
Earth's magnetic field wikipedia , lookup
Magnetic monopole wikipedia , lookup
Magnetotactic bacteria wikipedia , lookup
History of electrochemistry wikipedia , lookup
Electromagnet wikipedia , lookup
Superconducting magnet wikipedia , lookup
Magnetotellurics wikipedia , lookup
Magnetohydrodynamics wikipedia , lookup
Magnetoreception wikipedia , lookup
Multiferroics wikipedia , lookup
Force between magnets wikipedia , lookup
Magnetochemistry wikipedia , lookup
JÁNOS DR. MÁRKI-ZAY Vásárhelyi Cseresnyés Kollégium [email protected] Life forced me to use objects of everday life for doing experiments in physics. An advantage is that most of them can be performed also by the students at home. 1. Experiments with paper Paper is an excellent material to do a large number of experiments in statics, elasticity, optics, thermodynamics, acoustics, aerodynamics, environmental protection etc. Changes in the geometric properties of paper cause changes in the physical properties. A selection from my experiments with paper: A „paperspring” prepared from a paper cylinder. The static properties of the cylinder change to their opposite. This twistable cylinder changes its color according to the direction of the twist. Paper strips „repell” each-other sideways according to the orientation of the fibres inside the paper. 2. Electrostatical experiments (live and on DVD) The simple „Márki-Zay straw model” enables to perform mainly (but not exclusively) electrostatic model experiments during several hours. There are several experiments among them, where no other demonstration method is known. The main idea is the following: the electric charges are modelled by electrically charged plastic straws, which can roll on horizontal insulator lines Modeling the capacity of a short conductor Straws rolling „uphill” Investigation of the electric field of a Van de Graaf generator using dipoles made of straws Demonstration of surface discharges (on DVD) Large surface discharges on plastic foils (made by Van de Graaf generator) 3. Colourful demonstration of magnetic behaviour using color TV ( 45 mins DVD). A magnet placed on a uniformly colored (eg. blue) TV-screen deviates the electron beam, and a characteristic picture is formed (Lorentz print). Using this effect the color TV-screen can be used to teach wide vaireties of magnetic properties. Beside the aestethic picture the color enables 3D representation as well. Moreover, the electrons do not „stick together” like the particles of the generaly used iron-powder, therefore the timechange of the magnetic field can also be demonstrated. Device for teaching magnetism „Lorentz-print” of repelling magnets, and the 3D demonstration of the „Lorentz-print” Lorentz-print of a permanent magnet and of a conductor circle Demonstration of longitudinal waves using a series of magnetic pendula Magnetic pendulum, operated by hand or by electricity 4. Bragg-Nye bubble-model for modeling metal crystallines Vacancy (point defect) 5. Demonstration of diffusion along a grain boundary using the grain-model. Other experiments from fluid-mechanics, vortices, etc. Address: János Dr. Márki-Zay Hódmezıvásárhely, Hungary Demonstration of surface discharges (on DVD) Lorentz-print of a permanent magnet and of a conductor circle Demonstration of longitudinal waves using a series of magnetic pendula Large surface discharges on plastic foils (made by Van de Graaf generator) 3. Colourful demonstration of magnetic behaviour using color TV ( 45 mins DVD). A magnet placed on a uniformly colored (eg. blue) TV-screen deviates the electron beam, and a characteristic picture is formed (Lorentz print). Using this effect the color TV-screen can be used to teach wide vaireties of magnetic properties. Beside the aestethic picture the color enables 3D representation as well. Moreover, the electrons do not „stick together” like the particles of the generaly used iron-powder, therefore the timechange of the magnetic field can also be demonstrated. Magnetic pendulum, operated by hand or by Electricity 4. Bragg-Nye bubble-model for modeling metal crystallines Device for teaching magnetism Vacancy (point defect) 5. Demonstration of diffusion along a grain boundary using the grain-model. Other experiments from fluid-mechanics, vortices, etc. „Lorentz-print” of repelling magnets, and the 3D demonstration of the „Lorentz-print” Address: János Dr. Márki-Zay Hódmezővásárhely, Hungary