Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Temperature Measurement Sites01:14

Temperature Measurement Sites

3.8K
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
3.8K
Pipe Flowrate Measurement01:28

Pipe Flowrate Measurement

1.4K
In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
The orifice meter is a simple,...
1.4K
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

6.7K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
6.7K
Measurement of Fluid Pressure01:16

Measurement of Fluid Pressure

1.4K
Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...
1.4K
Thermometers and Temperature Scales01:22

Thermometers and Temperature Scales

8.2K
Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...
8.2K
Pipe Flowrate Measurement: Problem Solving01:28

Pipe Flowrate Measurement: Problem Solving

927
A spray tank system is engineered to uniformly distribute a pest-control liquid across plants by using a pressurized mechanism. The tank, pressurized to 150 kPa, holds the pesticide at a height of 0.80 meters. Liquid flows from the tank through a 1.9 meter pipe with a diameter of 0.015 meters, angled at 0.698 radians, ultimately reaching a 0.007 meter nozzle that sprays the pesticide. Accurate calculation of the system's flow rate is crucial to ensure uniform application, and this is achieved...
927

You might also read

Related Articles

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

Sort by
Same author

Instrumentation for the measurement of single-particle circular intensity differential scattering for bioaerosol detection.

Applied optics·2026
Same author

Temperature Measurement of Trapped, Thermally Sensitive Single Particles in an Optical Trap Using Raman Spectroscopy.

Applied spectroscopy·2023
Same author

A Collection of Molecular Fingerprints of Single Aerosol Particles in Air for Potential Identification and Detection Using Optical Trapping-Raman Spectroscopy.

Molecules (Basel, Switzerland)·2022
Same author

Combined Experimental and Computational Kinetics Studies for the Atmospherically Important BrHg Radical Reacting with NO and O<sub>2</sub>.

The journal of physical chemistry. A·2022
Same author

Measurement of circular intensity differential scattering (CIDS) from single airborne aerosol particles for bioaerosol detection and identification.

Optics express·2022
Same author

Improved Mechanistic Model of the Atmospheric Redox Chemistry of Mercury.

Environmental science & technology·2021
Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026
Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026
Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026
Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026
Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026
Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026
See all related articles

Related Experiment Video

Updated: Mar 12, 2026

A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing
08:29

A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing

Published on: August 10, 2018

8.4K

Fiber loop ringdown humidity sensor.

Haifa Alali, Chuji Wang

    Applied Optics
    |November 10, 2016
    PubMed
    Summary
    This summary is machine-generated.

    A novel optical fiber sensor uses evanescent field-fiber loop ringdown (EF-FLRD) to measure relative humidity (RH). This sensor offers fast response, high sensitivity, and wide dynamic range for accurate RH monitoring.

    More Related Videos

    A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device
    05:32

    A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device

    Published on: November 24, 2016

    8.3K
    Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
    09:48

    Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

    Published on: November 7, 2016

    12.5K

    Related Experiment Videos

    Last Updated: Mar 12, 2026

    A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing
    08:29

    A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing

    Published on: August 10, 2018

    8.4K
    A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device
    05:32

    A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device

    Published on: November 24, 2016

    8.3K
    Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
    09:48

    Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

    Published on: November 7, 2016

    12.5K

    Area of Science:

    • Photonics
    • Optical Sensing
    • Environmental Monitoring

    Background:

    • Relative humidity (RH) monitoring is crucial in various scientific and industrial applications.
    • Existing RH sensors may face limitations in response time, sensitivity, or dynamic range.
    • Optical fiber sensing offers potential for robust and sensitive measurements.

    Purpose of the Study:

    • To demonstrate a new optical fiber sensor for relative humidity (RH) measurement.
    • To utilize the evanescent field-fiber loop ringdown (EF-FLRD) technique for RH sensing.
    • To evaluate the sensor's performance characteristics, including response time, sensitivity, and dynamic range.

    Main Methods:

    • An optical fiber sensor was designed based on the evanescent field-fiber loop ringdown (EF-FLRD) technique.
    • The sensor was placed in a controlled humidity chamber monitored by a standard humidity meter.
    • Changes in the medium's refractive index due to moisture altered ringdown time via evanescent field scattering loss.

    Main Results:

    • The EF-FLRD sensor exhibited a rapid response time of approximately 1 second.
    • The sensor demonstrated high sensitivity and excellent reproducibility.
    • The sensor successfully measured RH across a wide dynamic range from 4% to 100% at a constant temperature.

    Conclusions:

    • The developed optical fiber EF-FLRD sensor is a promising tool for accurate and fast RH monitoring.
    • The sensor's performance characteristics make it suitable for applications requiring precise humidity measurements.
    • This technique offers a novel approach to optical fiber-based environmental sensing.