Recent content by arunshanker

Thanks AT, Wabbit and DrGreg

The trampoline analogy tries to explain gravity in terms of space time curvature the orbit of objects around a massive object can be understood, but what about centre of gravity of the massive object, the images of trampoline is generally shown as seen from top where the massive object is making...

Was there CD recording technology in 1977

Thanks, just found out that it is etched on the record

The Voyager Golden Records are phonograph records which were included aboard both Voyager spacecraft , which were launched in 1977. My question is will be good enough now, won't the radiation damage the CD, can it be read, if at all it reaches some ET Arun

Yes by insertion of the transgene in the germ cell

I read of the Milankovitch Cycles which explains the collective effects of changes in the Earth's movements upon its climate or in other words long term climate change. There is a flash animation here http://www.wwnorton.com/college/geo/egeo2/content/animations/18_2.htm I have also read that...

Thanks

Here is a compilation of my astrophotgraphy experiments http://vimeo.com/74302301 and some photos http://www.flickr.com/photos/76122336@N06/

Lawrence Krauss says that We evolved as human beings a few million years ago on the Savanna in Africa and we evolved to escape tigers, or lions, or predators. You know, how to throw a rock or a spear or how to find a cave and we didn't evolve to understand quantum mechanics. How correct is the...

Instantaneous action of gravity According to Albert Einstein's theory of special relativity, instantaneous action at a distance was seen to violate the relativistic upper limit on speed of propagation of information. For example if a massive object was removed will the effect be instantaneous...

A positive value for the cosmological constant was found by the studies of Adam G. Riess et al and Pearlmutter et al In terms of Planck units, and as a natural dimensionless value, the cosmological constant, λ, is on the order of 10−122 or 10−29 g/cm3 The cosmological constant has negative...