weightlessness

(redirected from Low gravity)
Also found in: Dictionary, Thesaurus, Encyclopedia.

weight·less·ness

(wāt'les-nĕs),
The psychophysiologic effect of zero gravity, as experienced by someone falling freely in a vacuum (for example, 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 curve where gravitational pull and centrifugal force cancel each other out.

weightlessness

Etymology: AS, gewiht + ME, les
a state of absence of apparent weight, as in being beyond the effects of gravitational force in space travel. See also space medicine.
A state in which there is no gravitational effect on a body or material
Physiologic effects Bone mineral loss, altered blood chemistries, weakened immune system, variable heart rate, arrhythmias, loss of skeletal and cardiac muscle mass and strength, increased urinary loss of nitrogen and phosphorus, motion sickness, and redistribution of fluids that are normally pooled in the lower torso and legs, resulting in a ‘fat face’

weightlessness

in horses induces osteoporosis if the period of weightlessness is long enough; in dogs the effects of weightlessness are confused with those of head-out immersion in water.
References in periodicals archive ?
Although major low gravity sources appeared to be shallow, they were most likely concealed throughout much of the area.
Gulf Keystone Petroleum (Gulf Keystone) (LSE: GKP), a company that explores, develops and produces oil and gas in North Africa and the Middle East, has announced that the Shaikan-1 well has discovered a significant resource of low gravity oil in the Jurassic Barsarin, Sargelu, Alan, Mus and Butmah formations.
He had been running on the Lakers' low gravity treadmill for several weeks, but ran on the court Tuesday.
Fascinated Students admired the three-metre high rocket which will monitor the impact of radiation and low gravity in space.
The space station allows scientists to conduct experiments in extremely low gravity, or micro-gravity.
It turns out that Newton's Third Law--the one about equal and opposite reactions--makes sex in low gravity something of a logistical challenge.
The papers address a wide range of experimental and theoretical topics, including measurement of contact angle at low gravity, simulations of electrokinetic flow in nanoscale porous media, the effect of surfactants on mitigation of pattern collapse on nanometre photoresist development, and electrowetting models for microdroplet actuation.
The expert in biomechanics claimed astronauts would find running easier than walking on Mars given its low gravity.
It may sound technical, but combine all these with a low gravity and taut suspension and it makes for outstanding road holding and a terrific driving luxury ( confidence.
Prior to buying it, I was told it was the greatest, outstanding for its quietness, low gravity center, very easy steering and other new features.
Dr John Weihaupt of the University of Colorado and Dr Frans vander Hoeven of the University of Delft in the Netherlands say that recently obtained data from the two Gravity Recovery and Climate Experiment (GRACE) satellites provide evidence for three or four strikes on Antarctica in the form of unusually low gravity readings.
On Earth, when metals are melted, bubbles in the molten material rise to the surface and usually pop and disappear, in low gravity, the bubbles may move only slightly, And when trapped in solid samples, bubbles show up as internal cracks that weaken a material's strength and diminish its usefulness, whether it's processed on Earth or in space.