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関連する概念動画

Schwarzschild Radius and Event Horizon01:21

Schwarzschild Radius and Event Horizon

No object with a finite mass can travel faster than the speed of light in a vacuum. This fact has an interesting consequence in the domain of extremely high gravitational fields.
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape velocity with the...
Principle of Equivalence01:18

Principle of Equivalence

According to Albert Einstein (1897-1955), free-falling and feeling weightless are intrinsically linked. If a person were in free-fall under gravity, for example, diving towards the Earth from an airplane, they would feel completely weightless. Similarly, a person descending in a lift may feel partially weightless. Broadly speaking, it is assumed that an object in a uniform gravitational field and an object undergoing constant acceleration in the absence of gravity are under the same...
Space-Time Curvature and the General Theory of Relativity01:17

Space-Time Curvature and the General Theory of Relativity

In 1905, Albert Einstein published his special theory of relativity. According to this theory, no matter in the universe can attain a speed greater than the speed of light in a vacuum, which thus serves as the speed limit of the universe.
This has been verified in many experiments. However, space and time are no longer absolute. Two observers moving relative to one another do not agree on the length of objects or the passage of time. The mechanics of objects based on Newton's laws of motion,...
Phase Transitions: Vaporization and Condensation02:39

Phase Transitions: Vaporization and Condensation

The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules...
Entropy02:39

Entropy

Salt particles that have dissolved in water never spontaneously come back together in solution to reform solid particles. Moreover, a gas that has expanded in a vacuum remains dispersed and never spontaneously reassembles. The unidirectional nature of these phenomena is the result of a thermodynamic state function called entropy (S). Entropy is the measure of the extent to which the energy is dispersed throughout a system, or in other words, it is proportional to the degree of disorder of a...
Weightlessness01:01

Weightlessness

When an object is dropped, it accelerates toward the center of the Earth. If the net external force on the object is its weight, it is said to be in free fall; that is, the only force acting on the object is gravity. Galileo was instrumental in showing that, in the absence of air resistance, all objects fall with the same acceleration g. However, when objects on the Earth fall downward, they are never truly in free fall, because there is always some upward resistance force from the air acting...

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関連する実験動画

Updated: Jun 12, 2026

Thermocapillary Convection Space Experiment on the SJ-10 Recoverable Satellite
07:00

Thermocapillary Convection Space Experiment on the SJ-10 Recoverable Satellite

Published on: March 11, 2020

微重力におけるボース-アインシュタイン凝縮.

T van Zoest1, N Gaaloul, Y Singh

  • 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany.

Science (New York, N.Y.)
|June 19, 2010
PubMed
まとめ
この要約は機械生成です。

科学者たちは,巨大な物質の波を観測して,自由落下状態でボース・アインシュタイン凝縮液を作り出した. この画期的な発見は,量子物質で基礎物理学をテストする新たな可能性を提供します.

さらに関連する動画

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment
11:38

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment

Published on: December 3, 2019

Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology
13:59

Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology

Published on: November 13, 2014

関連する実験動画

Last Updated: Jun 12, 2026

Thermocapillary Convection Space Experiment on the SJ-10 Recoverable Satellite
07:00

Thermocapillary Convection Space Experiment on the SJ-10 Recoverable Satellite

Published on: March 11, 2020

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment
11:38

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment

Published on: December 3, 2019

Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology
13:59

Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology

Published on: November 13, 2014

科学分野:

  • 量子物理学とは,量子物理学のことです.
  • 一般相対性理論とは
  • 原子物理学 原子物理学とは

背景:

  • アルバート・アインシュタインの等価原理は,重力と加速を結びつける.
  • ボーゼ-アインシュタイン凝縮物は,マクロスケールの量子現象を呈する.
  • 以前の実験では,大規模な量子効果のために十分な自由落下期間がありませんでした.

研究 の 目的:

  • ボーゼ-アインシュタイン凝縮液を自由落下状態で準備し観察する.
  • 拡張された自由落下条件下における量子物質の振る舞いを調査する.
  • 物質波インターフェロメトリーおよび基礎物理学のテストにおける応用を探求する.

主な方法:

  • マイクロ重力のために146メートルの高さの避難ドロップタワーを利用しました.
  • 準備された超冷たい原子がボース・アインシュタイン凝縮液を形成する.
  • 1秒間にわたってコンデンサートの膨張と波動関数の進化を観察した.

主要な成果:

  • ボーゼ-アインシュタイン凝縮液を自由落下状態で成功裏に生成した.
  • 巨大でミリメートル規模の異動化した物質の波の形成を観測した.
  • 拡張された自由落下における量子実験の可行性を実証した.

結論:

  • この実験は,自由落下中の物質の量子性質を検証する.
  • この研究は,一般相対性理論の高精度テストのための新しいプラットフォームを提供します.
  • この結果は,量子コンデンサットを用いた高度な物質波干渉測定の道を開く.