Weightlessness Meaning: Definition, Examples, and Translations
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weightlessness
[ˈweɪtləs(n)əs ]
Definitions
in space
The state or condition of having no weight due to the absence of gravity.
Examples of usage
- Experiencing weightlessness is one of the unique aspects of space travel.
- During the astronaut training, they simulate weightlessness to prepare for space missions.
physics
The state of a body having no force exerted on it by a gravitational field.
Examples of usage
- Objects in orbit around the Earth experience a constant state of weightlessness.
- The concept of weightlessness is a fundamental principle in the study of physics.
Translations
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Interesting Facts
Science
- Weightlessness occurs when objects are in free fall, such as astronauts orbiting Earth where gravity still exists but is counterbalanced by their speed.
- Experiments in weightlessness help scientists understand fundamental physics, including fluid dynamics and combustion.
- Even though astronauts experience weightlessness, they still have mass. It's the sensation and effects that differ due to the environment.
Pop Culture
- Films like 'Gravity' and 'Interstellar' depict weightlessness, showcasing how characters float and move differently in space environments.
- Books and stories often use weightlessness to explore themes of freedom and exploration beyond Earth's limitations.
Health
- Extended exposure to weightlessness can lead to muscle atrophy and bone density loss in astronauts, prompting research into countermeasures for their health.
- Studies on how the human body reacts in a weightless environment are crucial for planning long-term space missions, like trips to Mars.
Education
- Weightlessness is often taught in physics classes to illustrate gravitational forces and motion.
- Experiments in parabolic flights, where airplanes mimic weightlessness, are popular educational tools for students interested in space science.
Origin of 'weightlessness'
Main points about word origin
- The term combines 'weight', meaning the heaviness of an object, with 'lessness', indicating the absence of weight.
- The concept dates back to ancient times, but the specific term 'weightlessness' became popular in the 20th century with the rise of space travel.
The concept of weightlessness dates back to the 16th century when Galileo Galilei made significant contributions to the understanding of gravity. The term 'weightlessness' became more prevalent during the space age in the 20th century as astronauts experienced the sensation of zero gravity in orbit. Understanding weightlessness is crucial for space exploration and has led to advancements in physics and technology.
See also: overweight, weight, weighted, weightier, weights, weighty.