関連する実験動画

Updated: Jul 12, 2026

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

強い電波でイオノスフィアを変化させる

W F Utlaut, R Cohen

    Science (New York, N.Y.)
    |October 15, 1971
    PubMed
    まとめ

    ラジオ波を用いたイオノスフィアの改変実験は,自然のイオノスフィアとプラズマ物理学の理解を深める. これらの研究はまた,無線通信技術の進歩にもつながるかもしれません.

    さらに関連する動画

    How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters08:42

    How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

    Published on: April 16, 2015

    Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry07:17

    Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

    Published on: August 1, 2017

    関連する概念動画

    Intensity Of Electromagnetic Waves01:22

    Intensity Of Electromagnetic Waves

    The energy transport per unit area per unit time, or the Poynting vector, gives the energy flux of an electromagnetic wave at any specific time. For a plane electromagnetic wave with E0 and B0 as the peak electric and magnetic fields and traveling along the x-axis, the time-varying energy flux can be given by the following equation:
    Generating Electromagnetic Radiations01:10

    Generating Electromagnetic Radiations

    The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...
    The Electromagnetic Spectrum01:24

    The Electromagnetic Spectrum

    Electromagnetic waves are categorized according to their wavelengths and frequencies, giving the electromagnetic spectrum. These waves are classified as radio, infrared, ultraviolet, etc. Radio waves refer to electromagnetic radiation with wavelengths ranging from millimeters to kilometers. Radio waves are commonly used for audio communications (i.e., radios) and typically result from an alternating current in the wires of a broadcast antenna. They cover a broad wavelength range and are used...
    The Electromagnetic Spectrum02:37

    The Electromagnetic Spectrum

    The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
    Electromagnetic Waves01:30

    Electromagnetic Waves

    James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws of electricity and...
    Standing Electromagnetic Waves01:15

    Standing Electromagnetic Waves

    Electromagnetic waves can be reflected; the surface of a conductor or a dielectric can act as a reflector. As electric and magnetic fields obey the superposition principle, so do electromagnetic waves. The superposition of an incident wave and a reflected electromagnetic wave produces a standing wave analogous to the standing waves created on a stretched string.
    Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...