Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
Precipitation Gravimetry01:03

Precipitation Gravimetry

Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
Doppler Effect - II01:05

Doppler Effect - II

The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
Errors in Global Positioning System01:26

Errors in Global Positioning System

Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
Galvanometer01:24

Galvanometer

Common devices, including car instrument panels, battery chargers, and inexpensive electrical instruments, measure potential difference (voltage), current, or resistance using a d'Arsonval galvanometer. This electromechanical instrument is also known as a moving coil galvanometer.
The galvanometer consists of  two concave-shaped permanent magnets, providing a uniform radial magnetic field in the annular region. In the center, a pivoted coil of fine copper wire is placed in the uniform magnetic...
Doppler Effect - I00:56

Doppler Effect - I

The Doppler effect and Doppler shift were named after the Austrian physicist and mathematician Christian Johann Doppler in 1842, who conducted experiments with both moving sources and moving observers. Consider an observer standing on a street corner, observing an ambulance with a siren sound passing by at a constant speed. The observer experiences two characteristic changes in the sound of the siren. Initially, the sound increases in loudness as the ambulance approaches and decreases in...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Rheo-dissolution: A new platform for the simultaneous measurement of rheology and drug release.

Carbohydrate polymers·2019
Same author

Structure and physicochemical properties of Ghanaian grewia gum.

International journal of biological macromolecules·2018
Same author

Structure-Function Relationships in Pectin Emulsification.

Food biophysics·2018
Same author

Relaxation-encoded NMR experiments for mixture analysis: REST and beer.

Chemical communications (Cambridge, England)·2017
Same author

Structural characterisation and rheological properties of a polysaccharide from sesame leaves (Sesamum radiatum Schumach. & Thonn.).

Carbohydrate polymers·2016
Same author

Increasing the quantitative bandwidth of NMR measurements.

Chemical communications (Cambridge, England)·2016

関連する実験動画

Updated: Jul 12, 2026

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

ガニメデ:レーダーによる観測

R M Goldstein, G A Morris

    Science (New York, N.Y.)
    |June 20, 1975
    PubMed
    まとめ
    この要約は機械生成です。

    レーダーによる測定により,ガニメデは予想されるエネルギーの12%しか反射しないことが明らかになり,金星に似ており,他の惑星よりも粗いです. これは,ガニメデのユニークな表面組成と構造を示しています.

    さらに関連する動画

    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

    Bringing the Visible Universe into Focus with Robo-AO
    10:35

    Bringing the Visible Universe into Focus with Robo-AO

    Published on: February 12, 2013

    関連する実験動画

    Last Updated: Jul 12, 2026

    Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
    07:14

    Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

    Published on: May 1, 2018

    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

    Bringing the Visible Universe into Focus with Robo-AO
    10:35

    Bringing the Visible Universe into Focus with Robo-AO

    Published on: February 12, 2013

    科学分野:

    • 惑星科学は惑星科学である.
    • ラジオ天文学 ラジオ天文学
    • 表面物理学 表面物理学について

    背景:

    • レーダーの横断面測定は,惑星体の反射性を理解する上で極めて重要です.
    • 以前の研究では,太陽系の様々な天体の散乱特性を特徴づけた.

    研究 の 目的:

    • ガニメデのレーダー断面を測定・分析する.
    • ガニメデの散乱特性を他の天体と比較するために.
    • レーダーエコーに基づいてガニメデの表面の粗さを評価する.

    主な方法:

    • レーダー測定を用いて,ガニメデから地球に散らばった電力を測定した.
    • ガニメデの分散効率 (12%) と水星 (6%),火星 (8%),金星 (12%),小惑星トロ (8%) の分散効率を比較した.
    • レーダーエコーの分布を分析して,12.6cmの波長で表面の粗さを推測しました.

    主要な成果:

    • ガニメデは,予想されるエネルギーの12%を散射し,金星に匹敵する.
    • ガニメデは,観測された波長で水星,金星,火星よりも表面の荒さが大幅に示しています.
    • ガニメデからのレーダーエコーは,滑らかな標的とは異なり,ディスク全体からの散乱を示しています.

    結論:

    • ガニメデのレーダー散射特性は,他の地上の惑星や小惑星とは異なる表面構成や構造を示唆しています.
    • 観測された荒さは,ガニメデの複雑な表面形態を暗示しています.
    • ガニメデの表面特性のさらなる調査は,これらのレーダー発見に基づいて正当化されています.