関連する実験動画

Updated: Aug 5, 2026

AC Electrokinetic Phenomena Generated by Microelectrode Structures
20:38

AC Electrokinetic Phenomena Generated by Microelectrode Structures

Published on: July 28, 2008

スカミの巨大アクソンに逆行する電気的Naポンプによって生成される電流

P De Weer, R F Rakowski

    Nature
    |May 6, 1984
    PubMed
    まとめ

    動物の細胞機能に不可欠なナトリウムポンプは,通常,輸入するカリウムよりも多くのナトリウムを輸出する. この研究は,イカの軸索におけるその逆行動作が,内向きの電流を生成し,細胞の潜在力に影響することを示しています.

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    Implementation of a Hyperbolic Vortex Plasma Reactor for the Removal of Micropollutants in Water

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    Action Potentials01:41

    Action Potentials

    Overview
    Electromotive Force02:36

    Electromotive Force

    Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical charge is defined as an electric current. When electrons move through a wire, they generate an electric current. It can be recalled that in a redox reaction, electrons are lost and gained. In the spontaneous redox reaction of zinc with copper, when zinc is immersed in a copper ion solution, a transfer of electrons from one substance to...
    Action Potential01:14

    Action Potential

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    Membrane potential in neurons
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    Van de Graaff Generator01:15

    Van de Graaff Generator

    Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
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    Magnetic Force Between Two Parallel Currents01:13

    Magnetic Force Between Two Parallel Currents

    Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
    The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
    Action Potential01:14

    Action Potential

    Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the release of neurotransmitters at axon terminals, thereby transmitting information to the nervous system. An action potential is a specific "all-or-none" change in membrane potential that results in a rapid spike in voltage.
    Membrane potential in neurons
    Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...