Inventor of G-Suit Dies

...ical Unit, which developed the first civilian human centrifuge in the United States. The centrifuge was used to test human reactions to high levels of gravitational (G) forces. The team of Drs. Wood and Code, and Drs. Edward Lambert and E.J. Baldes tested the centrifuge themselves, risking their personal safety to...

ESA launches first Earth Explorer mission GOCE

... be processed on the ground to produce the most accurate map of the Earth's gravitational field to date and to refine the geoid: the actual reference shape of our pl...on of gravity-field anomalies (mountains, for instance, usually cause local gravitational variations ranging from tens of milligals to approximately one hundred). Th...

Physical therapists test mechanical arm to help patients recover from stroke, traumatic brain injury

... Studies have demonstrated that repetition is key to quicker recovery from neurological injuries, and researchers hope that Armeo's ability to counter gravitational forces will allow patients to perform the required tasks more often than when they are aided by therapists, said Dr. Patricia Smith, professor and vic...

GOCE Earth explorer satellite to look at the Earth's surface and core

...histicated mission ever to investigate the Earth's gravitational field and to map the reference shape of our planet...geoid (the reference surface of the planet) and of gravitational anomalies. Such a map will not only greatly improv...bit the Earth close enough to gather high-accuracy gravitational data while being able to filter out disturbances c...

September launch for ESA's gravity mission GOCE

...variations in the gravity field with unprecedented detail and accuracy. This will result in a unique model of the geoid, which is the surface of equal gravitational potential defined by the gravity field crucial for deriving accurate measurements of ocean circulation and sea-level change, both of which are affect...

Why do astronauts suffer from space sickness?

... major role in our spatial orientation. Changes in gravitational forces, such as the transition to weightlessness d...even be experienced after lengthy exposure to high gravitational forces in a human centrifuge, as is used for insta...r than an hour in a centrifuge and be subjected to gravitational forces of three times higher than that on Earth. T...

NASA and NIH Partner for Health Research in Space

...r basis of these effects for the eventual benefit of people who suffer from weak, fragile bones or muscle-wasting diseases. -- When people escape the gravitational pull of Earth, their brains also need to adjust to the sensation of weightlessness. Understanding how in space parts of the brain compensate for the a...

Researchers explore medicine in space

...ocols in space, UF researchers write in the October issue of the Journal of gravitational Physiology. Christoph Seubert, lead author of the National Aeronautic...bed rest, with their bodies tilted six degrees head down. 'The normal gravitational vector is from the head to the feet, so if you put somebody slightly head d...

Science of swooning

...m was applied to it to lower the pressure on their bodies. This assumed the gravitational stress of standing up. Blood flow in their forearms was measured at four different gravitational levels after having a non-alcoholic drink to determine how much their blood...

gravitational in Medical Dictionary

Orbit

... In physics, an orbit is the gravitationally curved path of one object around a point or another body, for example the gravitational orbit of a planet around a star. In mathematics, in the study of dynamical systems, an orbit is a collection of points related by the evolutio...

Hypotension

...essure - FAQs ... Orthostatic hypotension is a physical finding defined by the American Autonomic ... In persons with orthostatic hypotension , gravitational opposition to venous ... About the low blood pressure condition which is the result of neurological conditions, hypotensive drugs, or several ...

gravitational in Biological News

Paramecia adapt their swimming to changing gravitational force

For many single-celled organisms living in water, the force is always against them. The classic example is the slipper-shaped paramecium, which consistently swims harder going up than going down, just to keep from sinking. Now physicists Karine Guevorkian and James Valles of Brown University have w...

Life on Earth came from other planets

...e parent star. Because the parent star lost 40 percent to 80 percent of its mass after it became a red giant (blown away by its solar winds) its gravitational influences were reduced. Therefore, its planets would have increased orbital distances or might have been ejected from the solar system prior to super...

Healing wounds with lasers, vehicles that drive themselves, other cutting-edge optics

...he journey taken by the waves. Interferometry is used in many endeavors, such as navigation, optical clocks, encryption, and in the attempt to observe gravitational waves. The quality of the interferometer depends on the positions of the mirrors being precisely stable. Unfortunately, when experiments are carried o...

Water in the early universe

...ht from the quasar forming four distinct images of the quasar. Without this gravitational lensing effect, 580 days of continuous observations with the 100 m telescop...not in the disk, but in the superfast jets of material being ejected by the gravitational power of the black hole," explains John McKean. For the future, the dete...

Dancing atoms now understood

... magnetic field that causes these tiny tops to align with the magnetic field and precess (or wobble, much like a child's top), in the direction of the gravitational field. For MRI, the strong magnetic field needed for these techniques is generated inside the all too familiar tube that causes many patients cla...

NIST awards $24M in grants for new research facilities

...ures; interferometry with ultracold atoms, with applications ranging from basic research on fundamental physics to ultra-high precision gyroscopes and gravitational field detectors; solid-state magnetometers and amplifiers at the quantum limit, a precision measurement field with many applications in physics, earth...

The physics of star-forming clouds and the urban environment

...have built their theories of star formation around gravitational instability in star-forming clouds. New work over ... connection between turbulence in these clouds and gravitational instability. In San Antonio, Padoan will present r...n a dense fluid rests on top of a light fluid in a gravitational field. It also occurs when a pressure gradient acc...

National and international doctoral training

...annually. They involve such topics as novel connections between quantum and gravitational field theories, new ideas for the bionic implementation of concepts derived...ch fields in physics is the aim of the Research Training Group "Quantum and gravitational Fields" at the University of Jena. In close collaboration between physicist...

Space researchers developing tool to help disoriented pilots

...Adaptation Team is developing pre-flight and in-flight training countermeasures so that astronauts can adjust more rapidly to weightlessness, to other gravitational environments, and upon return to Earth's gravity. The team is also developing training tools for telerobotic arm operation. ...

The emerging scientific discipline of aeroecology

...by changing atmospheric conditions ( e.g. winds, air density, precipitation, air temperature) sunlight, polarized light, moonlight and geomagnetic and gravitational forces," the report states. Ecologists who study animals that use the aerosphere face three important challenges: to discover best methods fo...

gravitational in Biological Technology

NIST's LIDAR may offer peerless precision in remote measurements

...k holes with multiple X-ray telescopes on different satellites, and support tests of general relativity through measurements of satellite spacing in a gravitational field. The new LIDAR could enable continuous comparisons and feedback of distances to multiple reference points on multiple satellites. There also may...

NVIDIA CUDA Technology Dramatically Advances the Pace of Scientific Research

...er of magnitude," said Bruce Allen, director of the Max Plank Institute for gravitational Physics and Einstein@Home Leader for the LIGO Scientific Collaboration. "Th...ld permit deeper and more sensitive searches for continuous-wave sources of gravitational waves." "Parallel processing is the key to enabling visual computin...

The human brain minimizes energy expenditure and integrates gravity in to the action plan

...reveals that muscle activity when moving upwards differs from when moving downwards. This led the authors to surmise that the brain takes advantage of gravitational force during movement, trying to optimize energy consumption. The discovery of this biological rule has resulted from the use of a hypothetical-deduct...

Detecting dangerous chemicals with lasers, exploring the brain's circuitry with light and more

...pace-Time with Attometer Precision" on Monday, May 5 about the detection of gravitational waves, which promises to open up a new astrophysical window to the universe. He will discuss gravitational waves, what makes them so interesting and challenging to detect and how res...

Purdue leads center to simulate behavior of micro-electromechanical systems

...d up to the rigors of varying and extreme environments and how long they would last in the field. Devices in many environments must withstand crushing gravitational forces, temperature extremes, radiation and shocks from impact. "Reliability pertains to long-term performance," Murthy said. "Improving the integr...

gravitational in Biological Definition

Potential energy

...d above the Earth has energy resulting from the gravitational attraction of the Earth which is transferred in t...TocToggle("show","hide") 1 Types 1.1 gravitational potential energy 1.2 Elastic potential energy ...epresentation 4 See also Types gravitational potential energy This energy is stored as a res...

Optical spectrum

...olution that variations in their radial velocity as small as a few metres per second could be detected - the presence of planets was revealed by their gravitational influence on the motion of the stars analysed. See also Frequency Wavelength Rydberg formula Tetrachromat Trichromat ...

gravitational in Biological Dictionary

Synapsis

...Carter ... Synapsis by robotJAM. pandas BIG adventure On a secret mission Panda discovers a time traveling toilet. ... Synapsis Similar Albums: gravitational Systems , Process and Reality , Major Works of John Coltrane , Four for Trane , Conference of the Birds , Last synapsis n. , pl. -ses . The side-...

Potential energy

.... ... A rock resting at the top of a hill contains gravitational potential energy . ... In most scientific ci... by the force field, ... The most common use of gravitational potential energy is for an object near the ... The general expression for gravitational potential energy arises from the law of ... ...

Lens

...and refracts light, converging or diverging the beam. A simple lens is a lens consisting of a single optical element. A compound lens is... gravitational lens , a massive astronomical object which bends the light from ... Microwave lens , used to focus microwave radiation and often employed in slo...