Posts Tagged ‘Velocities’

Einstein in four *spatial* dimension

Why many physicists chose to define the universe in terms of the physical properties of a time or space-time dimension instead of four *spatial* dimensions is puzzling because, as was shown in the earlier article "Defining time" Sept 20, 2007 there is no observational evidence supporting it having physical properties.  Gravity and space-time But even […]

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Developmental changes in head movement kinematics during swimming in Xenopus laevis tadpoles [RESEARCH ARTICLE]

Sara Hänzi and Hans StrakaDuring the post-embryonic developmental growth of animals, a number of physiological parameters such as locomotor performance, dynamics and behavioural repertoire are adjusted to match the requirements determined by ch…

Tem finds huge new galaxy that is 99.99% dark matter

A recently-discovered, blob-like galaxy is approximately the same size as the Milky Way, but is almost entirely made up of dark matter, according to new research led by astronomers from Yale University and published in September’s edition of the Astrophysical Journal Letters. Using the W.M. Keck Observatory and the Gemini North telescope in Hawaii, lead […]

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Take-off speed in jumping mantises depends on body size and a power limited mechanism [RESEARCH ARTICLE]

G.P. Sutton, M. Doroshenko, D.A. Cullen, and M. BurrowsMany insects such as fleas, froghoppers and grasshoppers use a catapult mechanism to jump and a direct consequence of this is that their take-off velocities are independent of their mass. In contr…

How massive is the Milky Way? New study has the answer.

Astrophysicists finally have an accurate measurement for the weight of the Milky Way – approximately 7 x 1011 solar masses, or 700 billion times the mass of our Sun. Gwendolyn Eadie, a physicist at McMaster University, has been working on calculating the mass of the Milky Way for some time, and in a press release, […]

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