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weightlessness    音标拼音: [w'etləsnəs]
n. 无重状态

无重状态

weightlessness
n 1: the property of being comparatively small in weight; "the
lightness of balsa wood" [synonym: {lightness},
{weightlessness}] [ant: {heaviness}, {weightiness}]

34 Moby Thesaurus words for "weightlessness":
airiness, ascent, asteroids, aurora particles, blackout,
bubbliness, buoyancy, cosmic particles, cosmic ray bombardment,
daintiness, delicacy, downiness, ethereality, floatability,
fluffiness, foaminess, frothiness, gentleness, gossameriness,
intergalactic matter, lack of weight, levitation, levity,
lightness, meteor dust impacts, meteors, radiation, softness,
space bullets, tenderness, the bends, unheaviness, volatility,
yeastiness

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  • Weightlessness - Wikipedia
    Weightlessness is the complete or near-complete absence of the sensation of weight, i e , zero apparent weight It is also termed zero g-force, or zero-g (named after the g-force) [1] or, misleadingly, zero gravity
  • Weightlessness | Definition, Effects, Facts | Britannica
    Weightlessness, condition experienced while in free-fall, in which the effect of gravity is canceled by the inertial (e g , centrifugal) force resulting from orbital flight Excluding spaceflight, true weightlessness can be experienced only briefly, as in an airplane following a ballistic (i e , parabolic) path
  • Weightlessness - HyperPhysics
    It is possible to experience weightlessness for a considerable length of time by turning the nose of the craft upward and cutting power so that it travels in a ballistic trajectory A ballistic trajectory is the common type of trajectory you get by throwing a rock or a baseball, neglecting air friction
  • What is weightlessness? - howengineeringworks. com
    Why Weightlessness Occurs To understand weightlessness, we must understand what weight really is Weight = Force exerted by Earth’s gravity on a body However, what you feel as weight is actually the reaction force from the ground or any surface supporting you For example: When you stand on the ground, Earth pulls you downward The ground pushes you upward This upward push is what you feel as
  • How Weightlessness Works - HowStuffWorks
    As the International Space Station astronauts return to Earth after a three-month stay, learn about the effects of weightlessness on the body
  • Weightlessness Microgravity: Why Astronauts Float
    Weightlessness happens in free fall, not where gravity is missing Learn why astronauts float, what microgravity means and where you can feel it on Earth
  • WEIGHTLESSNESS Definition Meaning - Merriam-Webster
    The meaning of WEIGHTLESS is having little weight : lacking apparent gravitational pull
  • The Science of Zero Gravity: Life Without Weight
    But is gravity really gone? What does weightlessness do to the human body? And how does it change the way we live, work, and even think? Welcome to the fascinating world of zero gravity, where the laws of physics play tricks on our perception, and life takes on a whole new dimension
  • Weightlessness - New World Encyclopedia
    Weightlessness is the experience (by people and objects) during free-fall, of having no apparent weight This condition is also known as microgravity Weightlessness in common spacecraft is not due to an increased distance from the earth; the acceleration due to gravity at an altitude of 100 km is only three percent less than at the surface of the earth Weightlessness means a zero g-force or
  • Why Are Astronauts Weightless In The Space Station?
    In space, astronauts experience weightlessness because they’re in free-fall, constantly falling toward Earth yet missing it due to the planet’s curvature This orbit gives them a unique sensation, similar to jumping off a cliff but without any danger Gravitational forces still affect the space station The sensation of weight on Earth comes from the forces acting against gravity In space





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