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関連する概念動画

Infrared (IR) Spectroscopy: Overview01:09

Infrared (IR) Spectroscopy: Overview

When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
IR Spectrometers01:25

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
IR Spectroscopy: Molecular Vibration Overview01:24

IR Spectroscopy: Molecular Vibration Overview

When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
Applications of IR Spectroscopy: Overview01:11

Applications of IR Spectroscopy: Overview

The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.

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関連する実験動画

Updated: Jul 11, 2026

Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor (IRIS)
11:04

Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor (IRIS)

Published on: May 3, 2011

大型探査機赤外線放射計実験の最初の結果

R W Boese, J B Pollack, P M Silvaggio

    Science (New York, N.Y.)
    |February 23, 1979
    PubMed
    まとめ

    この研究は,金星を推定しています.

    科学分野:

    • 惑星科学は惑星科学である.
    • 大気科学 大気科学
    • 金星の科学は,金星の科学である.

    背景:

    • 金星は,主に二酸化炭素からなる濃厚な大気を備えています.
    • 大気組成と放射能移転の理解は,惑星の気候研究にとって極めて重要です.

    研究 の 目的:

    • 降下中の金星探査機からの赤外線放射計データを分析するために.
    • 金星の大気中のエアロゾール絶滅プロファイルと水蒸気混合比率を決定するために.
    • スペクトルデータを用いて雲の組成を推論する.

    主な方法:

    • 大型の探査用赤外線放射計を用いて,純熱放射流量を測定した.
    • 大気下降時の複数のスペクトル帯域のデータを分析した.
    • 見えるエアロゾールプロファイルと相関する赤外線絶滅.

    主要な成果:

    • 金星のエアロゾールの赤外線絶滅係数プロフィールを推定した.
    • 雲の甲板の下の水蒸気混合比率を決定しました.
    • 雲の組成を示す67マイクロメートルの帯域における観測されたスペクトル特徴.

    結論:

    さらに関連する動画

    The Use of High-resolution Infrared Thermography (HRIT) for the Study of Ice Nucleation and Ice Propagation in Plants
    09:36

    The Use of High-resolution Infrared Thermography (HRIT) for the Study of Ice Nucleation and Ice Propagation in Plants

    Published on: May 8, 2015

    An Intra-Tissue Radiometry Microprobe for Measuring Radiance In Situ in Living Tissue
    09:10

    An Intra-Tissue Radiometry Microprobe for Measuring Radiance In Situ in Living Tissue

    Published on: June 2, 2023

    関連する実験動画

    Last Updated: Jul 11, 2026

    Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor (IRIS)
    11:04

    Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor (IRIS)

    Published on: May 3, 2011

    The Use of High-resolution Infrared Thermography (HRIT) for the Study of Ice Nucleation and Ice Propagation in Plants
    09:36

    The Use of High-resolution Infrared Thermography (HRIT) for the Study of Ice Nucleation and Ice Propagation in Plants

    Published on: May 8, 2015

    An Intra-Tissue Radiometry Microprobe for Measuring Radiance In Situ in Living Tissue
    09:10

    An Intra-Tissue Radiometry Microprobe for Measuring Radiance In Situ in Living Tissue

    Published on: June 2, 2023

    • 赤外線放射測定器のデータは,金星の大気特性の貴重な洞察を提供します.
    • エアロゾールと水蒸気分布を定量化しました.
    • スペクトル解析は,金星の雲の複雑な組成のヒントを提供します.