Rotation Quotes - page 2
Even today, there persists... a feeling that the creation of the Universe out of nothing must violate some basic conservation law that stops one from getting something for nothing. Nevertheless, there is actually no evidence that the Universe as a whole possesses a non-zero value of any such conserved quantity. The total mass-energy of all the constituents of a finite Universe appears to be always equal in magnitude but opposite in sign to the total gravitational potential energies of those particles. ...Similarly, there is no evidence that the Universe possesses any overall net rotation or electric charge.
John D. Barrow
The concept of rotation led to geometrical exponential magnitudes, to the analysis of angles and of trigonometric functions, etc. I was delighted how thorough the analysis thus formed and extended, not only the often very complex and unsymmetric formulae which are fundamental in tidal theory, but also the technique of development parallels the concept.
Hermann Grassmann
Most studies employing three-dimensional objects as stimuli have used simultaneous presentation whereas most studies employing two-dimensional objects have used comparison of a single visual stimulus with a memory presentation. We suspect that it is this procedural difference rather than the difference in dimensionality that is the principal determiner of rate of mental rotation.
Roger Shepard
Heaven and Earth exist for ever:
Mountains and rivers never change.
But herbs and trees in perpetual rotation
Are renovated and withered by the dews and frosts:
And Man the wise, Man the divine-
Shall he alone escape this law?
Fortuitously appearing for a moment in the World
He suddenly departs, never to return.
Tao Yuanming
Within the DM paradigm the Tully-Fisher law must arise from galaxy formation since it connects luminosity of baryonic matter with a dynamical property, rotation, which is seen as dominated by the DM halo. But it has not been easy to derive Tully-Fisher from any natural connection between the two components. And as R. H. Sanders has pointed out, the messiness of galaxy formation is hardly the natural backdrop for such a sharp correlation between galaxy properties. The sharpness needs a dynamical reason as opposed to an evolutionary one.
Jacob Bekenstein
When my marriage broke up... I had just put on 45 pounds for my 'Shall We Dance?' character. I had to eat 10,000 calories a day just to put on weight while training with Tony Dovolani. I basically stayed in bed for a six-month rotation of depression naps. Dance helped me lose the weight.
Lisa Ann Walter
My siblings and I, we were raised on TV and films. Not a day went by that we weren't watching one of three movies - 'Caddyshack,' 'Animal House,' 'Beverly Hills Cop' - on rotation. Our comedy, our personalities were set watching 'Sesame Street': these really sort of wacky, Jim Henson-y characters.
Teddy Sears
The current cosmological paradigm, the cold dark matter model with a cosmological constant, requires that the mass-energy of the Universe be dominated by invisible components: dark matter and dark energy. An alternative to these dark components is that the law of gravity be modified on the relevant scales. A test of these ideas is provided by the baryonic Tully-Fisher relation (BTFR), an empirical relation between the observed mass of a galaxy and its rotation velocity. Here, I report a test using gas rich galaxies for which both axes of the BTFR can be measured independently of the theories being tested and without the systematic uncertainty in stellar mass that affects the same test with star dominated spirals. The data fall precisely where predicted a priori by the modified Newtonian dynamics.
Stacy McGaugh
This excerpt is presented as reproduced by Copernicus in the preface to De Revolutionibus 'Some think that the earth remains at rest. But Philolaus the Pythagorean believes that, like the sun and moon, it revolves around the fire in an oblique circle. Heraclides of Pontus and Ecphantus the Pythagorean make the earth move, not in a progressive motion, but like a wheel in rotation from west to east around its own center.'
Plutarch