相关实验视频

Updated: Jul 16, 2025

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging
04:54

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging

Published on: June 16, 2023

3.0K

用宽带光谱干扰测量测量清晰和的介质的光学特性

Peter N A Speets, Jeroen Kalkman

    Applied optics
    |September 14, 2023
    PubMed
    概括

    用光谱干扰测量测量了糖醇,乙醇和内脂稀释的光学特性,如组指数和散射. 结果与已建立的混合公式和分散模型保持一致.

    更多相关视频

    Implementation of a Reference Interferometer for Nanodetection16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    9.4K
    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis13:31

    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

    Published on: December 22, 2015

    15.1K

    相关概念视频

    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...
    1.2K
    Spectrophotometry: Introduction01:16

    Spectrophotometry: Introduction

    Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
    The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...
    3.3K
    UV–Vis Spectrometers01:14

    UV–Vis Spectrometers

    The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
    1.4K
    UV–Vis Spectroscopy: Beer–Lambert Law01:09

    UV–Vis Spectroscopy: Beer–Lambert Law

    The Beer-Lambert law describes the relationship between absorbance and concentration, which combines the principles established by scientists Johann Heinrich Lambert and August Beer. Lambert's law states that when light passes through a medium, the loss in intensity is directly proportional to the original intensity and the path length of the light. Beer's law proposed that the transmittance of a solution remains constant if the product of concentration and path length is constant. The...
    3.0K