escape velocity

简明释义

逃逸速度

英英释义

例句

1.The concept of escape velocity is crucial in astrophysics for understanding how celestial bodies can break free from gravitational pull.

在天体物理学中，逃逸速度的概念对于理解天体如何摆脱引力至关重要。

2.The escape velocity from the Moon is much lower than that from Earth, making lunar missions easier.

从月球的逃逸速度远低于地球，使得月球任务更容易。

3.To leave Earth's atmosphere, a spacecraft must reach a speed known as escape velocity.

要离开地球的大气层，航天器必须达到一个被称为逃逸速度的速度。

4.When launching a satellite, engineers calculate the required escape velocity to ensure it reaches orbit.

在发射卫星时，工程师计算所需的逃逸速度以确保其达到轨道。

5.Understanding escape velocity helps scientists design better rockets and space missions.

理解逃逸速度有助于科学家设计更好的火箭和太空任务。

作文

In the realm of physics, the term escape velocity refers to the minimum speed an object must reach to break free from the gravitational pull of a celestial body without any additional propulsion. This concept is not only crucial for understanding space travel but also serves as a metaphor in various aspects of life. To illustrate this, let us explore the significance of escape velocity in both scientific and personal contexts.When we consider the scientific definition, escape velocity is typically calculated using the formula: v = √(2GM/r), where G is the gravitational constant, M is the mass of the celestial body, and r is the radius from the center of that body to the point of escape. For Earth, the escape velocity is approximately 11.2 kilometers per second. This means that any spacecraft must reach this speed to leave Earth's gravitational influence and venture into space.Understanding escape velocity is vital for engineers and scientists involved in space missions. For instance, when launching a satellite, it is imperative to calculate the necessary thrust and trajectory to ensure that the satellite can achieve this speed. Failure to do so could result in the satellite falling back to Earth or becoming trapped in orbit, unable to fulfill its intended purpose.Beyond the physical sciences, the idea of escape velocity can be applied to personal development and growth. In life, we often encounter challenges and obstacles that can feel as daunting as escaping a planet's gravitational pull. Just as a rocket must reach a certain speed to escape the grip of gravity, individuals must sometimes achieve a particular mindset or level of motivation to break free from limiting beliefs or difficult circumstances.For example, consider someone who wishes to change careers. The fear of failure and the comfort of the familiar can act as a gravitational force, holding them back. To achieve their own escape velocity, they may need to gather courage, develop new skills, and create a strategic plan. This process might involve taking small steps, such as networking, gaining experience through internships, or furthering their education. Each of these actions contributes to building the momentum needed to propel them toward their goals.Moreover, the concept of escape velocity can also be relevant in overcoming emotional struggles. Individuals facing anxiety or depression may feel trapped in a cycle of negative thoughts and feelings. To break free, they might need to seek support, engage in therapy, or adopt healthier coping mechanisms. Just like a rocket requires fuel to reach its destination, people may need external support and internal resolve to achieve their own personal escape velocity.In conclusion, the term escape velocity encompasses more than just a scientific principle; it symbolizes the critical threshold one must surpass to achieve freedom from constraints, whether they are physical, professional, or emotional. By understanding and applying this concept in various aspects of our lives, we can strive to overcome our limitations and reach new heights. Just as rockets soar into the cosmos, we too can aim for the stars by finding our own escape velocity.

在物理学领域，术语逃逸速度指的是一个物体必须达到的最小速度，以摆脱天体的引力而无需额外的推进。这一概念不仅对理解太空旅行至关重要，还在生活的各个方面作为隐喻。为了说明这一点，让我们探讨一下逃逸速度在科学和个人背景下的重要性。当我们考虑科学定义时，逃逸速度通常使用公式计算：v = √(2GM/r)，其中G是万有引力常数，M是天体的质量，r是从该天体中心到逃逸点的半径。对于地球来说，逃逸速度大约为每秒11.2公里。这意味着任何航天器必须达到这个速度才能离开地球的引力影响，进入太空。理解逃逸速度对参与太空任务的工程师和科学家至关重要。例如，在发射卫星时，必须计算必要的推力和轨迹，以确保卫星能够达到这个速度。如果未能做到这一点，可能会导致卫星坠回地球或被困在轨道上，无法完成其预期目的。超越物理科学，逃逸速度的概念可以应用于个人发展和成长。在生活中，我们经常会遇到挑战和障碍，这些障碍可能感觉就像逃离一个星球的引力一样艰巨。正如火箭必须达到一定的速度以逃脱重力，个人有时也必须达到特定的心态或动机水平，以突破限制性信念或困难环境。例如，考虑一个希望换职业的人。对失败的恐惧和熟悉感的舒适感可以作为引力，阻碍他们前进。为了实现自己的逃逸速度，他们可能需要聚集勇气、发展新技能并制定战略计划。这个过程可能涉及采取小步骤，例如建立人际网络，通过实习获得经验或进一步教育。每一个行动都有助于建立推动他们朝向目标所需的动力。此外，逃逸速度的概念在克服情感挣扎时也可能相关。面临焦虑或抑郁的人可能会感到被困在负面思想和情绪的循环中。要打破这种局面，他们可能需要寻求支持、参与治疗或采用更健康的应对机制。就像火箭需要燃料才能到达目的地一样，人们可能需要外部支持和内心决心来实现自己的个人逃逸速度。总之，术语逃逸速度不仅仅是一个科学原理；它象征着一个人必须超过的关键阈值，以实现从约束中解放，无论这些约束是身体上的、职业上的还是情感上的。通过理解和应用这一概念，我们可以努力克服局限，达到新的高度。正如火箭飞向宇宙，我们也可以通过找到自己的逃逸速度来瞄准星辰。