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

Density and Archimedes' Principle01:05

Density and Archimedes' Principle

7.7K
When a lump of clay is dropped into water, it sinks. But if the same lump of clay is molded into the shape of a boat, it starts to float. Because of its shape, the clay boat displaces more water than the lump and experiences a greater buoyant force, even though its mass is the same. The same holds true for steel ships. The average density of an object majorly determines if the object will float. If an object's average density is less than that of the surrounding fluid, it will float. The...
7.7K
Density00:56

Density

16.4K
Density is an important characteristic of substances, crucial in determining whether an object sinks or floats in a fluid. Its SI unit is kg/m3, and its cgs unit is g/cm3. The density of an object helps in identifying its composition, and also reveals information about the phase of the matter and its substructure. The densities of liquids and solids are roughly comparable, consistent with the fact that their atoms are in close contact. However, gases have much lower densities than liquids and...
16.4K
Design Example: Application of Archimedes' Principle01:11

Design Example: Application of Archimedes' Principle

376
Archimedes' principle is fundamental in analyzing the buoyant force and stability of floating bodies. In this example, a wooden block with a rectangular section floats in seawater. Based on the block's dimensions, its specific gravity and the specific weight of seawater are used to find the volume of water displaced and the center of buoyancy.
The volume of seawater displaced by the block is determined by first calculating the block's weight. This is done by multiplying the...
376
Density, Specific Weight, Specific Gravity and Compressibility of Fluid01:27

Density, Specific Weight, Specific Gravity and Compressibility of Fluid

957
Density, specific weight, specific gravity, and compressibility are fundamental properties of fluids. Density is the mass per unit volume, characterizing the mass of a fluid system. It influences buoyancy, pressure, flow dynamics, viscosity, thermal conductivity, and sound propagation. For instance, in pipeline design, accurate density measurements ensure that the pipeline can handle the fluid's mass.
Specific weight represents the weight per unit volume and is calculated by multiplying...
957
Buoyancy and Stability for Submerged and Floating Bodies01:11

Buoyancy and Stability for Submerged and Floating Bodies

2.2K
In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...
2.2K
Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

560
Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
560

You might also read

Related Articles

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

Sort by
Same author

A Novel Method for Analyzing Silver Sediment With High Precision.

Journal of research of the National Bureau of Standards (1977)·2021
Same author

Direct Determination of Air Density in a Balance Through Artifacts Characterized in an Evacuated Weighing Chamber.

Journal of research of the National Bureau of Standards (1977)·2021
Same author

A Practical Test of the Air Density Equation in Standards Laboratories at Differing Altitude.

Journal of research of the National Bureau of Standards (1977)·2021
Same author

The Electrochemical Equivalent of Pure Silver-A Value of the Faraday.

Journal of research of the National Bureau of Standards (1977)·2021
Same author

Recalculation of the Faraday Constant Due to A New Value for the Atomic Weight of Silver.

Journal of research of the National Bureau of Standards (1977)·2021
Same author

Recalibration of the U.S. National Prototype Kilogram.

Journal of research of the National Bureau of Standards (1977)·2021
Same journal

A Graph Coloring Algorithm for Large Scheduling Problems.

Journal of research of the National Bureau of Standards (1977)·2021
Same journal

Generators for Discrete Polynomial L<sub>1</sub> Approximation Problems.

Journal of research of the National Bureau of Standards (1977)·2021
Same journal

Room Temperature Poling of Poly(Vinylidene Fluoride) with Deposited Metal Electrodes.

Journal of research of the National Bureau of Standards (1977)·2021
Same journal

Molecular Dynamics Study of Liquid Rubidium and the Lennard-Jones Fluid.

Journal of research of the National Bureau of Standards (1977)·2021
Same journal

Isoionic Isotope Exchange with Hydroxylapatite and the Dilution Effect.

Journal of research of the National Bureau of Standards (1977)·2021
Same journal

Observations of Surface Changes in Platinum Crucibles.

Journal of research of the National Bureau of Standards (1977)·2021
See all related articles

Related Experiment Video

Updated: Oct 19, 2025

Combined Size and Density Fractionation of Soils for Investigations of Organo-Mineral Interactions
08:38

Combined Size and Density Fractionation of Soils for Investigations of Organo-Mineral Interactions

Published on: February 15, 2019

15.2K

The Density Determination of Small Solid Objects by a Simple Float Method-II.

R S Davis1

  • 1National Bureau of Standards, Washington, DC 20234.

Journal of Research of the National Bureau of Standards (1977)
|September 27, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a new apparatus for precise density change measurements in small solid samples. The novel method achieves high accuracy, enabling detailed comparisons with theoretical predictions.

Keywords:
densitydensity changesdensity of solidssmall samples

More Related Videos

Determination of the Settling Rate of Clay/Cyanobacterial Floccules
06:00

Determination of the Settling Rate of Clay/Cyanobacterial Floccules

Published on: June 11, 2018

7.1K
Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization
09:35

Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization

Published on: December 25, 2017

28.8K

Related Experiment Videos

Last Updated: Oct 19, 2025

Combined Size and Density Fractionation of Soils for Investigations of Organo-Mineral Interactions
08:38

Combined Size and Density Fractionation of Soils for Investigations of Organo-Mineral Interactions

Published on: February 15, 2019

15.2K
Determination of the Settling Rate of Clay/Cyanobacterial Floccules
06:00

Determination of the Settling Rate of Clay/Cyanobacterial Floccules

Published on: June 11, 2018

7.1K
Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization
09:35

Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization

Published on: December 25, 2017

28.8K

Area of Science:

  • Materials Science
  • Physical Chemistry
  • Analytical Chemistry

Background:

  • Accurate density measurements are crucial for characterizing solid materials.
  • Existing methods may lack precision for small samples (<1 gram).

Purpose of the Study:

  • To present a novel apparatus for precise relative density change measurements.
  • To demonstrate the apparatus's capability with small solid samples.

Main Methods:

  • Utilized a newly reported apparatus for density measurements.
  • Performed relative measurements on solid samples under one gram.
  • Achieved a measurement precision of a few parts in 104.

Main Results:

  • Successfully measured density changes in small solid samples.
  • Demonstrated high precision (few parts in 104) in relative measurements.
  • Presented comparisons between experimental results and theoretical models.

Conclusions:

  • The developed apparatus enables highly precise density change measurements for small samples.
  • The findings support the utility of the new apparatus in materials characterization and validation.