Not exact matches
The fact is, the
Earth's magnetic field has reversed thousands of times over the
Earth's lifetime,
with no apparent effect on it's
rotation.
Instead they work on the equatorial bulge; due to its own
rotation, the
Earth is not a perfect sphere but an oblate spheroid,
with an equatorial diameter about 43 kilometers larger than its polar diameter.
The moon was 10 to 20 times closer to
Earth than it is now, and the researchers found that it quickly assumed a tidally locked position
with the
rotation time of the moon equal to the orbital period of the moon around
Earth.
The changing level of light each day keeps these rhythms synchronized
with Earth's
rotation.
With scorching temperatures and a mind - numbingly slow
rotation (one Venus day lasts 243
Earth days), Venus was already a contender for weirdest planet in the solar system.
Jeffrey Hall and Michael Rosbash, who performed their award - winning work at Brandeis University, share the honor
with The Rockefeller University's Michael Young for their seminal discoveries explaining how living creatures — including plants, animals and humans — adapt their biological rhythms to align
with Earth's
rotation.
Repeat a famous experiment carried out
with atomic clocks and you will age 40 nanoseconds less if you circle the globe eastward, in the direction of
Earth's
rotation.
Paglen shot these photographs
with a host of cameras and telescopes using a computer - guided mechanical mount for accurate «pointing», and to compensate for the
rotation of
Earth.
At the same time, an intense surge of cool monsoon winds from the northeast whistled through the gap between Borneo and Indochina, wrapping around the stormy vortex and making it spin
with no help from
Earth's
rotation.
And if the
rotation rate was 16
Earth days, the temperature skyrocketed 45 degrees higher than the level
with its current
rotation rate.
11 To keep this time in sync
with Earth's slowing
rotation, a «leap second» must be added every few years, most recently this past New Year's Eve.
But because a second defined in that way fails to account for the slowing of
Earth's
rotation, it wreaked havoc
with celestial navigation, which in the 1960s was still guiding ships across the globe.
The wobble in
Earth's axis of
rotation is a combination of two major components, each
with its own cause.
By contrast, the four - meter Mayall telescope a few blocks away weighs 375 tons because it has an equatorial mount aligned
with Earth's axis of
rotation.
Its uniqueness becomes clear only after
Earth's
rotation has whirled the sky around,
with most of the stars arcing in their grand and endless ballet.
Exposing the retina to light at night messes
with your body's circadian rhythm, the beat of life estimated to have evolved 2.5 billion years ago in response to
Earth's 24 - hour
rotation.
(Less massive bodies also cause frame dragging on a smaller scale; NASA's Gravity Probe B launched in 2004 to measure the frame - dragging effects of
Earth's
rotation with sensitive gyroscopes.)
The spectral landscape is revealed by the Meteosat Seviri satellite, which snaps images every 15 minutes as it orbits in lockstep
with Earth's
rotation.
Time can mean many things, but Hillis's machine needs to track a particularly messy version:
Earth - surface clock / calendar time, which is based on a byzantine agglomeration of astronomical
rotations, orbits, and perturbations of hugely varying lengths, overlaid
with arbitrary cultural whims about how to divide it up.
That means an ancient Venus
with an
Earth - like atmosphere could have had the same
rotation rate it has today.
In combination
with Earth's
rotation, it builds up a powerful «dynamo effect,» which creates a magnetic field.
The streams of particles can vary in density, temperature and speed and sweep past
Earth every 27 days or so, in line
with the time it takes the Sun to make one complete
rotation relative to
Earth.
The observations are consistent
with the hypothesis that Vega is viewed
with its pole of
rotation pointing toward
Earth (first proposed by astronomer Richard O. Gray), so that the relatively cool equator corresponds to the darker «limb of the star» and heightens the gravity - darkening effect.
This is in line
with more recent studies that suggest that misalignment of magnetic field and
rotation axes or turbulence may enhance early disk formation, producing disks of 100 times the
Earth - Sun radius or larger.
For many years it was thought that Mercury's
rotation was tidally locked to be in synchrony
with the Sun, such that it rotated once for each orbit, keeping the same face directed toward the Sun at all times — analogous to the manner in which the same side of the Moon always faces the
Earth.
A dizzying number of genetic transcripts, proteins and other molecular players alternatively glom together or fall apart, turning on or tuning down countless patterns of gene expression that keep our cells, organs and bodies humming along
with the
Earth's daily
rotations.
If clock time gets more than about 0.4 seconds out of step
with astronomical time then the
Earth Orientation Center of the International
Earth Rotation and Reference Systems Service (IERS) based in the Paris Observatory announce a leap second needs to be inserted so that the two time scales always agree to better than one second.
Here we show that the recent warming in this region is strongly associated
with a negative trend in the North Atlantic Oscillation, which is a response to anomalous [natural] Rossby wave - train activity [planetary waves related to the
Earth's
rotation] originating in the tropical Pacific.
It is found that the El Niño — Southern Oscillation (ENSO) is driven not only by the seasonal heating, but also by three more external periodicities (incommensurate to the annual period) associated
with the ~ 18.6 - year lunar - solar nutation of the
Earth rotation axis, ~ 11 - year sunspot activity cycle and the ~ 14 - month Chandler wobble in the
Earth's pole motion.
With very strong magnetic fields and very fast
rotations, some neutron stars blast beams of electromagnetic radiation from their poles, and if
Earth is in the path of those beams we can detect the signals as regular «pulses» — hence the name pulsars.
However, its
rotation is very slow
with 243
Earth days in a single «Venus day,» which is slightly longer than the planet's year, and retrograde when compared
with Earth's so that the Sun rises in the west and sets in the east.
The new high - resolution simulations show that an oblique impact by an object
with 10 percent the mass of the
Earth can eject sufficient iron - free material into
Earth - orbit to yield the Moon, while also leaving the
Earth with its final mass and correct initial
rotation rate.
In recent years Greenland has been losing so much mass that, along
with changes in Antarctica and the amount of water stored on the globe's continents, it appears to be having a subtle but measurable effect on the
rotation of the
Earth itself.
Earth and moon have a pretty stable relationship at this point: The moon's orbit is circular, and paced
with its
rotation so that the same side of the moon always faces
Earth.
The latter is almost linearly related to changes in ice sheet volume; the former, however, is influenced by a range of factors, including atmosphere / ocean dynamics and changes in
Earth's gravitational field,
rotation, and crustal and the mantle deformation associated
with the redistribution of mass between land ice and the ocean.
From broken farm equipment, he built his own equatorial mount so his telescope could move
with the
rotation of the
Earth.
«A Moon-less
Earth with the same mass,
rotation rate, and orbit as today would have the direction of its spin axis vary chaotically between 0 and 90 degrees on time scales as short as 10 million years,» says Darren Williams, Assistant Professor of Physics and Astronomy at Penn State University and NAI member.
In addition, women need to manage their lifestyles so their clocks are always set properly in alignment
with earth's
rotation.
There are so many more variables for a fight scene when your heroine is in tune
with the vibrations of sound, the molecules in the air, and the very
rotation of the
Earth.
Shadow walls — where suspended panels
with cutout images cast shadows as the sun shines through the cutouts — teach students about the
earth's
rotation and seasonal cycles as shadows cast by the sun shift positions and lengths.
And it does it because those big blowers don't just allow the Supersports to alter the
rotation of the
earth at low rpm, but they also allow the motor to bang into its rev - limiter
with unprecedented ferocity at its top end.
The impact pushes the moon off its axis into a closer
rotation with the
earth causing immediate and massive tsunamis that wipe out millions.
With the earliest purpose thought to be as simple as a light source at night to modern day understandings of its effect on the
Earth's
rotation and tides, the moon has found itself playing a fundamental role in the lifespans of all forms of life on this planet.
As The World Turns is a record player moving imperceptibly slowly, in time
with the
rotation of the
Earth.
This property arises from unassailable dynamic considerations having to do
with the weak influence of the
Earth's
rotation in the tropics, where the local vertical is nearly perpendicular to the
Earth's axis of
rotation.
With a different overall climatic state or geography, the system might be considerably less sensitive to orbital forcing (obviously it has been less sensitive; orbital forcing has been going on throughout
Earth's history (modulated by tidally - induced changes in
Earth's
rotation and the moon's orbit)-RRB-.
The lack of such transverse waves in
Earth's polar vortices is suggestive that the dynamics of the Venus polar vortices may have more in common
with hurricanes than their more direct terrestrial polar counterparts, perhaps due to the large difference in the
rotation rates of
Earth and Venus.»
Short period variations in the
Earth's
rotation rate, length ‐ of ‐ day (LOD), are driven mainly by the atmosphere
with smaller contributions by the oceans.
The mechanism I have in mind is instead the
rotation of the
Earth's core relative to the crust, which is an inevitable result of the Moon's tidal drag on
Earth combined
with the relatively inviscid mantle acting as a kind of lubricant for that
rotation.
This network grew to a multi-station, multi-nation system
with the Paris observatory eventually becoming the headquarters of the International
Earth Rotation Service — IERS.