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関連する概念動画

Emission Spectra02:39

Emission Spectra

76.5K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
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Random Error01:04

Random Error

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Random or indeterminate errors originate from various uncontrollable variables, such as variations in environmental conditions, instrument imperfections, or the inherent variability of the phenomena being measured. Usually, these errors cannot be predicted, estimated, or characterized because their direction and magnitude often vary in magnitude and direction even during consecutive measurements. As a result, they are difficult to eliminate. However, the aggregate effect of these errors can be...
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Random Variables01:09

Random Variables

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A random variable is a single numerical value that indicates the outcome of a procedure. The concept of random variables is fundamental to the probability theory and was introduced by a Russian mathematician, Pafnuty Chebyshev, in the mid-nineteenth century.
Uppercase letters such as X or Y denote a random variable. Lowercase letters like x or y denote the value of a random variable. If X is a random variable, then X is written in words, and x is given as a number.
For example, let X = the...
17.9K
Randomized Experiments01:13

Randomized Experiments

9.1K
The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
9.1K
Random and Systematic Errors01:20

Random and Systematic Errors

15.2K
Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
15.2K
Random Sampling Method01:09

Random Sampling Method

14.8K
Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest. Among the various sampling methods used by...
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Updated: Feb 9, 2026

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
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Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

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発光:温度調節可能なランダムレーザー.

D S Wiersma1, S Cavalieri

  • 1European Laboratory for Nonlinear Spectroscopy and Istituto Nazionale per la Fisica della Materia, Largo E. Fermi 2, 50125 Florence, Italy.

Nature
|December 14, 2001
PubMed
まとめ
この要約は機械生成です。

研究者は,調整可能な色スペクトルを持つ新しいランダムレーザーを開発しました. この温度調節可能なレーザーは,高度なフォトニックアプリケーションのためのユニークな放射特性を提供します.

さらに関連する動画

In Situ Measurement and Correlation of Cell Density and Light Emission of Bioluminescent Bacteria
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In Situ Measurement and Correlation of Cell Density and Light Emission of Bioluminescent Bacteria

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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

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関連する実験動画

Last Updated: Feb 9, 2026

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

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In Situ Measurement and Correlation of Cell Density and Light Emission of Bioluminescent Bacteria
05:52

In Situ Measurement and Correlation of Cell Density and Light Emission of Bioluminescent Bacteria

Published on: June 28, 2018

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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

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科学分野:

  • フォトニクスと光学
  • 材料科学 材料科学とは

背景:

  • 従来のレーザーは,光の増幅のために光学空洞に依存しています.
  • ランダムレーザーは,拡散材料と光の散乱を利用し,従来の穴の必要性を排除します.
  • これらのレーザーは,従来のレーザーと電球の間でユニークな放射特性を持っています.

研究 の 目的:

  • 温度調節可能な色スペクトルを持つランダムなレーザーを作成します.
  • フォトニクスとセンシングにおけるそのようなデバイスの潜在的な応用を探求する.

主な方法:

  • 拡散物質を用いたランダムレーザーの製造.
  • 温度変化によるレーザー放出限界値とスペクトル出力の調節.
  • ランダムレーザーの放射特性の特徴.

主要な成果:

  • ランダムレーザーを実証し,その放射スペクトルは小さな温度変動で調節可能である.
  • 温度調節によってレーザーの値の制御を達成しました.
  • 数十マイクロメートルの小型化の可能性が確認されました.

結論:

  • 開発されたランダムレーザーは,制御可能な色スペクトルを持つ温度調整可能な光源を提供します.
  • 潜在的な応用には,フォトニクス,温度感知ディスプレイ,および遠隔温度感知が含まれます.
  • デバイスの小ささと調節可能な特性により,将来の技術にとって有望な候補となります.