Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Pressure Variation in a Fluid at Rest01:11

Pressure Variation in a Fluid at Rest

421
In a fluid at rest, the pressure at any point beneath the fluid surface depends solely on the depth, not on the container's shape or size. This principle, known as hydrostatic pressure, arises because, in stationary fluids, there is no acceleration, meaning the forces within the fluid balance out. Only vertical forces, caused by the weight of the fluid above, contribute to pressure changes with depth.
When measuring pressure at two different levels within the fluid, the difference in...
421
Buoyancy00:59

Buoyancy

11.0K
When an object is placed in a fluid, it either floats or sinks. All objects in a fluid experience a buoyant force. For example, a metal ball sinks, while a rubber ball floats. Similarly, a submarine can sink and float by adjusting its buoyancy.  The concept of buoyancy raises several interesting questions. For instance, where does this buoyant force come from? How much buoyant force is required to make an object sink or float? Do objects that sink get any support at all from the...
11.0K
Design Example: Application of Archimedes' Principle01:11

Design Example: Application of Archimedes' Principle

328
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...
328
Density and Archimedes' Principle01:05

Density and Archimedes' Principle

7.5K
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...
7.5K
Fluid Pressure over Flat Plate of Constant Width01:05

Fluid Pressure over Flat Plate of Constant Width

2.2K
When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
2.2K
Precipitation Gravimetry01:03

Precipitation Gravimetry

7.8K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
7.8K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Association of glomerular hyperfiltration with mortality in stroke: an analysis using pooled individual patient data.

European stroke journal·2026
Same author

A multicomponent unit-based approach for hospital care of older adults with behavioral and psychological symptoms of dementia.

Journal of hospital medicine·2026
Same author

Development and validation of a fully automated transformer-based 3D framework for pancreatic fat quantification in pancreatic steatosis.

European journal of radiology open·2026
Same author

Next-generation radar bed measurements should be optimized for assimilation or repeat-pass profiling.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
Same author

Comparative analysis of PET and multiparametric MRI biomarkers in Alzheimer's disease continuum cohort.

Journal of Alzheimer's disease reports·2025
Same author

A Scoping Review of Sociodemographic Differences in Geriatric Orthopedic Surgery Research.

Journal of the American Geriatrics Society·2025

Video Experimental Relacionado

Updated: Sep 24, 2025

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

8.1K

El agua subterránea bajo la Antártida es profunda

Winnie Chu1

  • 1School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA.

Science (New York, N.Y.)
|May 5, 2022
PubMed
Resumen

Los científicos descubrieron un enorme depósito de agua de mar oculto en lo profundo de la capa de hielo de la Antártida Occidental. Este hallazgo ofrece nuevos conocimientos sobre el pasado geológico y los entornos subglaciales de la Antártida.

Área de la Ciencia:

  • Geología
  • La oceanografía
  • Glaciología

Sus antecedentes:

  • La capa de hielo de la Antártida Occidental (WAIS) cubre una parte significativa del continente antártico.
  • Comprender los entornos subglaciales es crucial para predecir la dinámica de las capas de hielo y el aumento del nivel del mar.

Objetivo del estudio:

  • Para investigar las condiciones subglaciales debajo de la capa de hielo de la Antártida Occidental.
  • Identificar y caracterizar las reservas de agua potenciales.

Principales métodos:

  • Se realizaron estudios geofísicos para mapear el terreno subglacial.
  • El análisis de los datos sísmicos reveló anomalías indicativas de una gran masa de agua.

Principales resultados:

Más Videos Relacionados

Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential
14:38

Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential

Published on: April 20, 2012

11.5K
In Situ Soil Moisture Sensors in Undisturbed Soils
08:20

In Situ Soil Moisture Sensors in Undisturbed Soils

Published on: November 18, 2022

6.6K

Videos de Experimentos Relacionados

Last Updated: Sep 24, 2025

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

8.1K
Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential
14:38

Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential

Published on: April 20, 2012

11.5K
In Situ Soil Moisture Sensors in Undisturbed Soils
08:20

In Situ Soil Moisture Sensors in Undisturbed Soils

Published on: November 18, 2022

6.6K
  • Se detectó un vasto depósito de agua de mar fósil debajo de la capa de hielo.
  • Se estima que el embalse contiene un volumen significativo de agua marina antigua.

    • Conclusiones:

    • La presencia de agua de mar fósil sugiere incursiones marinas pasadas o procesos hidrogeológicos únicos.
    • Este descubrimiento tiene implicaciones para la comprensión del paleoclima y la hidrología subglacial de la Antártida.