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Related Concept Videos

Interference and Diffraction02:18

Interference and Diffraction

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Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
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Interference: Path Lengths01:10

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Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
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Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

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Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
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Atomic Absorption Spectroscopy: Interference01:25

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Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
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Interference and Superposition of Waves01:07

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When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
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Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

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In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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Implementation of a Reference Interferometer for Nanodetection
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Interference effect from noise on range-gated laser ranging and tracking system.

Pengfei Du, Wei Wang, Dongxian Geng

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    |May 14, 2015
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    Summary
    This summary is machine-generated.

    High-repetition-rate noise interferes with laser ranging and tracking systems (LRTS). Noise pulses, periodic or not, affect system operation due to their repetition rate and shifts relative to echo pulses.

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    Area of Science:

    • Optoelectronics
    • Laser Systems Engineering

    Background:

    • Laser ranging and tracking systems (LRTS) are crucial for distance measurement.
    • Understanding noise interference is vital for LRTS accuracy and reliability.

    Purpose of the Study:

    • To investigate the influence of high-repetition-rate noise on LRTS.
    • To reveal the interference mechanism of noise on range gates.

    Main Methods:

    • Theoretical analysis and numerical simulation of noise interference.
    • Experimental verification using electrical and optical circuits.

    Main Results:

    • High-repetition-rate noise, both periodic and nonperiodic, can infiltrate LRTS range gates.
    • Relative shifts between signal and noise pulses significantly impact interference effects.
    • Simulation models were validated by experimental results.

    Conclusions:

    • Noise pulses affect LRTS operation through their repetition rate and temporal shifts.
    • The study provides insights into mitigating noise in laser ranging and tracking systems.