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関連する概念動画

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.
Kepler's Third Law of Planetary Motion01:18

Kepler's Third Law of Planetary Motion

In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. In 1909, he formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe. However, in 1918, he published his third law of planetary motion, which gives a precise mathematical relationship between a planet's average distance from the Sun and the amount of time it takes to revolve around the Sun. It...
Gravitation01:16

Gravitation

In the years before Newton, a general belief prevailed that different laws governed objects in the sky than objects on Earth. When Kepler wrote down the three laws of planetary motion, explaining in detail the geometrical properties of the planetary orbits around the Sun, there was no immediate idea to discern their connection with more fundamental laws. It was Isaac Newton who, in 1665–66, figured out the connection between planetary motion, the motion of the moon around the Earth, and the...
Nephrons01:10

Nephrons

The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma happens...
Newton's Law of Gravitational Attraction01:24

Newton's Law of Gravitational Attraction

Sir Isaac Newton established the universality of the law of gravitational attraction based on empirical evidence and inductive reasoning. He published his work in Philosophiae Naturalis Principia Mathematica ("the Principia") on July 5, 1687.
Newton's law of gravitational attraction is a fundamental law of physics that governs the attraction between objects. It states that the magnitude of the gravitational force between any two objects is proportional to their masses and inversely proportional...
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...

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関連する実験動画

Updated: Jul 12, 2026

Murine Neural Plate Targeting by In Utero Nano-Injection (NEPTUNE) at Embryonic Day 7.5
10:49

Murine Neural Plate Targeting by In Utero Nano-Injection (NEPTUNE) at Embryonic Day 7.5

Published on: February 14, 2022

ネプチューンの物語 ネプチューンの物語

P Goldreich, N Murray, P Y Longaretti

    Science (New York, N.Y.)
    |August 4, 1989
    PubMed
    まとめ
    この要約は機械生成です。

    トリトン トリトン

    さらに関連する動画

    Visualizing Oceanographic Data to Depict Long-term Changes in Phytoplankton
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    Visualizing Oceanographic Data to Depict Long-term Changes in Phytoplankton

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    Inducing Complete Polyp Regeneration from the Aboral Physa of the Starlet Sea Anemone Nematostella vectensis
    08:17

    Inducing Complete Polyp Regeneration from the Aboral Physa of the Starlet Sea Anemone Nematostella vectensis

    Published on: January 14, 2017

    関連する実験動画

    Last Updated: Jul 12, 2026

    Murine Neural Plate Targeting by In Utero Nano-Injection (NEPTUNE) at Embryonic Day 7.5
    10:49

    Murine Neural Plate Targeting by In Utero Nano-Injection (NEPTUNE) at Embryonic Day 7.5

    Published on: February 14, 2022

    Visualizing Oceanographic Data to Depict Long-term Changes in Phytoplankton
    08:15

    Visualizing Oceanographic Data to Depict Long-term Changes in Phytoplankton

    Published on: July 28, 2023

    Inducing Complete Polyp Regeneration from the Aboral Physa of the Starlet Sea Anemone Nematostella vectensis
    08:17

    Inducing Complete Polyp Regeneration from the Aboral Physa of the Starlet Sea Anemone Nematostella vectensis

    Published on: January 14, 2017

    科学分野:

    • 惑星科学は惑星科学である.
    • 軌道ダイナミクスとは
    • N-ボディシミュレーション

    背景:

    • ネプテュンの最大の月であるトリトンは,異常な逆行軌道を持っています.
    • その捕獲メカニズムとその後の進化は完全に理解されていません.

    研究 の 目的:

    • トリトンが海王星の周回軌道に捕らえられたことを調査するためです.
    • トリトンの軌道進化と海王星の衛星システムへの影響をモデル化する.

    主な方法:

    • 軌道動力の数値シミュレーション.
    • 潮分散モデリング.
    • 衛星の相互作用と共鳴の分析.

    主要な成果:

    • トリトンの捕獲は,以前に存在していた海王星の衛星との衝突の結果だった可能性が高い.
    • 潮の力は109年以内にトリトンの軌道を現在の状態に進化させた.
    • トリトンの重力の影響は,他の海王星の衛星を破壊し,食いつくし,ネレイドの偏心的な軌道と内部衛星の生存を説明しました.

    結論:

    • トリトンの捕獲と進化は,海王星の衛星システムの構造について包括的な説明を提供します.
    • 内側衛星は5R(N) 圏内に存続し,トリトンからの混沌とした干渉により軌道が傾斜している.
    • ネプテュンの弧は,これらの内側の衛星の角回転共鳴と関連しています.