Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Distance Measurements by Taping

Distance Measurements by Taping

Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...

Causes of Similarity-Dissimilarity Effect

Causes of Similarity-Dissimilarity Effect

The similarity-dissimilarity effect, a fundamental concept in social psychology, explains how interpersonal similarities and differences influence attraction and social interactions. This effect is supported by three key psychological perspectives: balance theory, social comparison theory, and consensual validation.Balance Theory and Cognitive ConsistencyBalance theory, developed by Fritz Heider, posits that individuals seek cognitive consistency in their relationships. When two people share...

Calibration Curves: Correlation Coefficient

Calibration Curves: Correlation Coefficient

In a linear calibration curve, there is a value called the calibration coefficient, denoted by 'r,' which measures the strength and the direction of association between two variables. The correlation coefficient value ranges from −1 to +1. A value of +1 indicates a perfect positive linear correlation, −1 denotes a perfect negative correlation, and 0 implies no correlation between the two variables. A positive correlation value establishes that as one variable increases, the other increases, and...

Correlation of Experimental Data

Correlation of Experimental Data

Dimensional analysis simplifies complex physical problems and guides experimental investigations, but it does not provide complete solutions. It identifies the dimensionless groups that influence a phenomenon, but experimental data is needed to establish the specific relationships and validate theoretical predictions.
For example, a spherical particle moving through a viscous fluid experiences drag. Dimensional analysis shows that the drag force depends on the particle's diameter, velocity, and...

$Interference and Diffraction$ 02:18

Interference and Diffraction

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.

2D NMR: Overview of Homonuclear Correlation Techniques

2D NMR: Overview of Homonuclear Correlation Techniques

Homonuclear correlation spectroscopy (COSY) is a powerful technique used in Nuclear Magnetic Resonance (NMR) spectroscopy to study the correlations between nuclei of the same type within a molecule. It provides information about scalar couplings between adjacent nuclei, which helps determine connectivity and structural information. There are several COSY variants, each with its unique strengths and experimental parameters.
COSY90 is the standard two-dimensional (2D) COSY experiment that...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

2021 Canadian Surgery Forum: Virtual, online Sept. 21-24, 2021.

Canadian journal of surgery. Journal canadien de chirurgie·2022

Same author

Volume imaging by tracking sparse topological features in electron micrograph tilt series.

Ultramicroscopy·2022

Same author

The effect of elemental Zn boluses on concentrations of Zn in serum and faeces of South American camelids.

New Zealand veterinary journal·2019

Same author

Tetratrichomonas and Trichomonas spp.-Associated Disease in Free-Ranging Common Eiders ( Somateria mollissima) from Wellfleet Bay, MA and Description of ITS1 Region Genotypes.

Avian diseases·2018

Same author

A menu of electron probes for optimising information from scanning transmission electron microscopy.

Ultramicroscopy·2017

Same author

Prevalence of Candidatus Mycoplasma haemolamae, bovine viral diarrhoea virus, and gastrointestinal parasitism in a sample of adult New Zealand alpaca (Vicugna pacos).

New Zealand veterinary journal·2017

Search research articles

Related Experiment Video

Updated: May 29, 2026

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

Published on: October 6, 2023

Practical methods for the measurement of spatial coherence--a comparative study.

C Maunders¹, C Dwyer, P C Tiemeijer

¹Department of Materials Engineering, Monash University, VIC 3800, Australia.

Ultramicroscopy

|August 26, 2011

Summary

This summary is machine-generated.

Two new methods precisely measure transverse spatial coherence in field emission gun transmission electron microscopes (TEMs). These techniques reveal how illumination and operating conditions impact TEM spatial coherence.

More Related Videos

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Conducting Hyperscanning Experiments with Functional Near-Infrared Spectroscopy

Conducting Hyperscanning Experiments with Functional Near-Infrared Spectroscopy

Published on: January 19, 2019

Related Experiment Videos

Last Updated: May 29, 2026

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

Published on: October 6, 2023

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Conducting Hyperscanning Experiments with Functional Near-Infrared Spectroscopy

Conducting Hyperscanning Experiments with Functional Near-Infrared Spectroscopy

Published on: January 19, 2019

Area of Science:

Materials Science
Physics
Microscopy

Background:

Spatial coherence is crucial for high-resolution imaging in transmission electron microscopy (TEM).
Accurate measurement of spatial coherence is essential for optimizing TEM performance.
Existing methods for measuring spatial coherence have limitations.

Purpose of the Study:

To develop and validate novel methods for measuring transverse spatial coherence in TEM.
To investigate the influence of illumination and operating conditions on spatial coherence.
To compare the new methods with the established Ronchigram method.

Main Methods:

Development of two new techniques for transverse spatial coherence measurement.
Application of these methods to a field emission gun TEM.
Systematic variation of illumination and operating parameters during measurement.

Main Results:

Successful implementation of two novel spatial coherence measurement methods.
Demonstration of the impact of various conditions on spatial coherence.
Comparative analysis of the new methods against the Ronchigram technique.

Conclusions:

The developed methods provide accurate measurements of transverse spatial coherence in TEM.
Understanding the effect of operating conditions allows for improved TEM performance.
These new techniques offer valuable alternatives for spatial coherence assessment in electron microscopy.