Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Osmoregulation in Fishes02:32

Osmoregulation in Fishes

When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
Testing Water Quality01:14

Testing Water Quality

When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
Tidal Forces01:06

Tidal Forces

The origin of Earth's ocean tides has been a subject of continuous investigation for over 2000 years. However, the work of Newton is considered to be the beginning of the proper understanding of the phenomenon. Ocean tides are the result of gravitational tidal forces. These same tidal forces are present in any astronomical body; they are responsible for the internal heat that creates the volcanic activity on Io, one of Jupiter's moons, and the breakup of stars that get too close to black holes.
Buoyancy01:12

Buoyancy

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 fluid? 
To get...

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Talking back.

Science (New York, N.Y.)·2026
Same author

How Trump upended science.

Science (New York, N.Y.)·2025
Same author

Judge's ruling leaves NIH's move to abruptly slash grants in limbo.

Science (New York, N.Y.)·2025
Same author

Breakdowns of the year.

Science (New York, N.Y.)·2024
Same author

U.S. undersea mapping is a boon for science.

Science (New York, N.Y.)·2024
Same author

Breakdowns of the Year.

Science (New York, N.Y.)·2023

相关实验视频

Updated: Jun 12, 2026

The Floating Lab: Standard Operational Procedure for Collecting and Filtering Seawater Samples from Operating Ferries for Environmental DNA Analysis
06:22

The Floating Lab: Standard Operational Procedure for Collecting and Filtering Seawater Samples from Operating Ferries for Environmental DNA Analysis

Published on: August 1, 2025

监视着海上的情况.

David Malakoff

    Science (New York, N.Y.)
    |June 19, 2010
    PubMed
    概括

    No abstract available in PubMed .

    更多相关视频

    Coral Reef Arks: An In Situ Mesocosm and Toolkit for Assembling Reef Communities
    07:59

    Coral Reef Arks: An In Situ Mesocosm and Toolkit for Assembling Reef Communities

    Published on: January 6, 2023

    相关实验视频

    Last Updated: Jun 12, 2026

    The Floating Lab: Standard Operational Procedure for Collecting and Filtering Seawater Samples from Operating Ferries for Environmental DNA Analysis
    06:22

    The Floating Lab: Standard Operational Procedure for Collecting and Filtering Seawater Samples from Operating Ferries for Environmental DNA Analysis

    Published on: August 1, 2025

    Coral Reef Arks: An In Situ Mesocosm and Toolkit for Assembling Reef Communities
    07:59

    Coral Reef Arks: An In Situ Mesocosm and Toolkit for Assembling Reef Communities

    Published on: January 6, 2023