1) Buoyancy 2) Flimsiness 3) Fluffiness 4) Frothiness 5) Lightness 6) Weight
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https://www.crosswordclues.com/clue/weightlessness
1) Lightness 2) Zerog
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https://www.crosswordclues.com/clue/weightlessness
Weightlessness, or an absence of `weight`, is in fact an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces from floors, seats, beds, scales, and the like. Counterintuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an .....
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http://en.wikipedia.org/wiki/Weightlessness
A state experienced in a ballistic trajectory (i.e. in orbit or free fall) when, because the gravitational attraction is opposed by equal and opposite inertial forces, a body experiences no mechanical stress.
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http://www.braeunig.us/space/glossary.htm
condition experienced while in free-fall (q.v.), in which the effect of gravity is canceled by the inertial (e.g., centrifugal) force resulting from ... [3 related articles]
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http://www.britannica.com/eb/a-z/w/20
The condition of zero-gravity (zero-g) or microgravity experienced by all spacecraft and their occupants when in orbit, in any other state of free fall, or traveling through space at constant speed. Weightlessness can be of great benefit in certain areas of research and manufacturing, and large cons...
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http://www.daviddarling.info/encyclopedia/W/weightlessness.html
Condition in which no acceleration, whether due to gravity or any other force, can be detected by an observer within a system. It also means the absence of weight or the absence of the force of gravity acting on a body. Microgravity, gravitational force between 0 and 10 -6 g, is included here. ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: wāt′les-nĕs Definitions: 1. The psychophysiologic effect of zero gravity, as experienced by someone falling freely in a vacuum (astronauts in a stable orbit). A temporary state of simulated weightlessness can be achieved during powered flight within the earth's atmosphere by traversing an inverted parabolic...
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http://www.medilexicon.com/medicaldictionary.php?t=99799
Sometimes termed 'zero g' or 'agravic', it is the condition when no force (such as weight) is sensed. Occurs in orbit or free fall, when gravity already produces its full acceleration and can produce no further effect. See also: Standard Acceleration due to Gravity.
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https://www.encyclo.co.uk/local/20687
noun the property of being comparatively small in weight; `the lightness of balsa wood`
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https://www.encyclo.co.uk/local/20974
Click images to enlargeApparent loss in weight of a body in free fall. Astronauts in an orbiting spacecraft do not feel any weight because they are falling freely in the Earth's gravitational field (not because they are beyond the influence of Earth's gravity). The same phenomenon can be experienced in a falling l...
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https://www.encyclo.co.uk/local/21221
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