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Instrument Calibration01:12

Instrument Calibration

Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
Introduction and Methods of Leveling01:26

Introduction and Methods of Leveling

Leveling is a surveying procedure used to determine elevation differences between distant points. Elevation refers to the vertical distance above or below a reference datum, typically mean sea level (MSL). In the United States, elevations are often referenced to the mean sea level station at Father Point Rimouski along the St. Lawrence Seaway. To make the datum accessible, permanent markers are established throughout the region. These markers, called benchmarks, have known elevations. If the...
Common Leveling Mistakes and Errors01:17

Common Leveling Mistakes and Errors

A survey team is tasked with determining the elevation difference between points Point A and Point B, separated by uneven terrain. They use a leveling instrument and a leveling rod.Common MistakesMisreading the Rod: During a backsight reading at Point A, the instrumentman observes the rod partially obscured by tall grass. Instead of reading 1.135 m, they mistakenly record 1.735 m due to the misalignment of the crosshair with the wrong graduation. This error adds 0.600 m to all subsequent...
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...
Calibration Curves: Linear Least Squares01:20

Calibration Curves: Linear Least Squares

A calibration curve is a plot of the instrument's response against a series of known concentrations of a substance. This curve is used to set the instrument response levels, using the substance and its concentrations as standards. Alternatively, or additionally, an equation is fitted to the calibration curve plot and subsequently used to calculate the unknown concentrations of other samples reliably.
For data that follow a straight line, the standard method for fitting is the linear...
Calibration Curves: Correlation Coefficient01:10

Calibration Curves: Correlation Coefficient

In a linear calibration curve, there is a value called the calibration coefficient, denoted by 'r,' which measures the strength and the direction of association between two variables. The correlation coefficient value ranges from −1 to +1. A value of +1 indicates a perfect positive linear correlation, −1 denotes a perfect negative correlation, and 0 implies no correlation between the two variables. A positive correlation value establishes that as one variable increases, the other increases, and...

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関連する実験動画

Updated: Jul 12, 2026

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
10:22

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

Published on: September 7, 2019

シーサットの高度計の校正:最初の結果

B D Tapley, G H Born, H H Hagar

    Science (New York, N.Y.)
    |June 29, 1979
    PubMed
    まとめ

    レーダー高度計のデータは,宇宙船の高さや海波の高さを測定するための精度仕様を満たしています. この技術は,現在,高度な海洋学研究と実用的な応用のための準備ができています.

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    Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds
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    Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

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    Last Updated: Jul 12, 2026

    Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
    10:22

    Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

    Published on: September 7, 2019

    Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds
    12:50

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    Published on: September 26, 2017

    Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools
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    科学分野:

    • 海洋学 海洋学とは
    • リモートセンシング (リモートセンサー)
    • 地質物理学 地質物理学とは地質物理学です.

    背景:

    • レーダー高度測定は,Skylab,GEOS-3,Seasatを含む複数の宇宙ミッションを通じて進化してきました.
    • 以前のミッションは,正確な海洋学的な測定のための基盤を確立しました.

    研究 の 目的:

    • レーダー高度計の性能を,その事前に定義された仕様に照らして評価する.
    • 定量海洋学研究のためのレーダー高度計技術の準備度を決定する.

    主な方法:

    • レーダー高度計から得られたデータの予備分析.
    • 海洋表面上からの宇宙船の高さの測定の検証.
    • 重要な波長の測定値の評価.

    主要な成果:

    • レーダー高度計は,宇宙船の高度を+/- 10cmの精度で測定するための仕様を満たしました.
    • 重要な波長測定により, +/- 0.5m の目標精度を達成しました.
    • データ分析により,計器の信頼性の高い性能が確認されました.

    結論:

    • レーダー高度計は,すべての主要な性能仕様を満たし,重要な精度に達しました.
    • 検証された精度は,重要な定量海洋学調査のためのレーダー高度計データの使用を可能にします.
    • この装置は,様々な実用的な海洋学的用途に適していると考えられています.