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Related Concept Videos

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...
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...
Glassware Calibration01:11

Glassware Calibration

Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical laboratory. Calibration helps maintain consistency across measurements and prevents errors arising from inaccurate volumes.
Volumetric flasks: Volumetric flasks are designed to prepare aqueous solutions of precise volumes accurately with a calibration line on the neck. To calibrate a volumetric flask, it is important to fill it with distilled...

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Updated: Jun 6, 2026

Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
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Published on: June 24, 2016

Lidar calibration technique using laboratory-generated aerosols.

M A Jarzembski, V Srivastava, D M Chambers

    Applied Optics
    |November 19, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel aerosol scattering target calibration method for continuous-wave Doppler lidars was developed. This technique, using silicone oil droplets, revealed lidar efficiencies approximately half those from conventional hard target methods, impacting aerosol modeling and lidar design.

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    Area of Science:

    • Atmospheric optics
    • Remote sensing instrumentation
    • Laser physics

    Background:

    • Continuous-wave Doppler lidars are crucial for atmospheric measurements.
    • Accurate calibration is essential for reliable lidar data.
    • Conventional hard target calibration may introduce systematic errors.

    Purpose of the Study:

    • To develop and validate a new calibration technique for Doppler lidars using an aerosol scattering target.
    • To compare the results of the aerosol calibration method with the conventional hard target calibration.
    • To assess the implications of calibration differences on lidar performance and atmospheric aerosol studies.

    Main Methods:

    • Developed a calibration technique utilizing laboratory-generated spherical silicone oil droplets as an aerosol scattering target.
    • Performed calibrations simulating both single- and many-particle scattering under atmospheric measurement conditions.
    • Calculated single-particle backscatter cross-sections using Mie theory based on known droplet properties.

    Main Results:

    • Measurements using the aerosol calibration technique yielded lidar efficiencies approximately half those obtained with the conventional hard target method.
    • The aerosol calibration method provides a validation of fundamental lidar theory for particle scattering in coherent detection.
    • Discrepancies highlight potential overestimation of lidar efficiency with traditional methods.

    Conclusions:

    • The new aerosol calibration technique offers a more realistic assessment of lidar performance for atmospheric applications.
    • Findings have significant implications for improving aerosol backscatter estimates in atmospheric models.
    • The study suggests a need to re-evaluate current lidar calibration practices and system designs for enhanced accuracy.