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

Photoelectric Effect

Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...

You might also read

Related Articles

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

Sort by

Same author

The changes in life style and funding patterns.

The Australasian nurses journal·1979

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 17, 2026

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM

Published on: January 23, 2013

Photoelectric fringe strength measurement.

W I Beavers, W D Swift

|January 14, 2010

Summary

This study demonstrates a photoelectric measurement technique using a scanning photometer to precisely determine a source

Area of Science:

Optical Physics
Photometry
Interferometry

Background:

Accurate measurement of interference fringe strengths is crucial in optical physics.
Scanning photometers offer a method for precise optical measurements.
Understanding system performance and environmental effects is key for reliable data acquisition.

Purpose of the Study:

To describe experiments using a scanning photometer for photoelectric measurement of interference fringe strengths.
To compare the system's observed performance against theoretical predictions.
To investigate signal-to-noise ratio variations and turbulence effects on the measurements.
To demonstrate high-precision measurement of source angular diameter.

Main Methods:

Utilizing a scanning photometer for photoelectric detection of interference fringes.

More Related Videos

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence

In Situ Measurement of Vacuum Window Birefringence using ²⁵Mg⁺ Fluorescence

Published on: June 13, 2020

Related Experiment Videos

Last Updated: Jun 17, 2026

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM

Published on: January 23, 2013

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence

In Situ Measurement of Vacuum Window Birefringence using ²⁵Mg⁺ Fluorescence

Published on: June 13, 2020

Conducting experiments to measure fringe strengths and system performance.

Comparing experimental data with theoretical models.

Analyzing signal-to-noise ratio and the impact of atmospheric turbulence.

Main Results:

The observed performance of the scanning photometer system was evaluated.
Signal-to-noise ratio variations were studied in relation to system parameters.
The effects of turbulence on measurement accuracy were investigated.
A high-precision measurement of source angular diameter was successfully demonstrated using this technique.

Conclusions:

The photoelectric measurement technique with a scanning photometer is effective for determining interference fringe strengths.
The system's performance aligns with theoretical expectations, with quantifiable variations due to noise and turbulence.
This method provides a viable approach for high-precision angular diameter measurements of celestial or other sources.