By: Lawrence George
Gamma rays are a form of light. What humans think of as "light" is only a small part of a vast spectrum of electromagnetic energy. When a body possesses an electric charge some of its atomic particles will emit energy by giving off photons -...
Is reincarnation scientifically possible?
By: Wayne Myers
Hidden within man's religions, hidden within his poetry, his science and his philosophies, hidden within the very marrow of his bones is a deep and abiding fear of death. Nowhere is this more apparent than in the case of reincarnation, a concept founded upon a...
Metalworking and manufacturing processes: What is the shearing process
By: Rex Coker
There are three different methods of shearing metal in manufacturing. Metal shearing can be done at all three stages of making the products length, width. Other methods of cold shearing are used by pipe and stamping facilities. Steel mills use many different shearing methods...
Stephen Hawking argues against the search for extra-terrestrial intelligence (SETI)
By: D. Vogt
Most critics of the Search for Extraterrestrial Intelligence (SETI) suggest merely that it is a well-intentioned but foolish waste of money, chasing after radio signals sent by "little green men" while substantive research projects with tangible results go unfunded. However, some, like well-known Cambridge physicist...
Stephen Hawking argues against the search for extra-terrestrial intelligence (SETI)
By: Paul Rance
There are so many stars in the universe it would be very strange indeed if there was no life on any other planet but ours, and would that life be dangerous to us? Professor Stephen Hawking's fear, that extra-terrestrials would be unfriendly, is really judging...
By: Elizabeth M Young
Physical scientists have a whole world of work to do in the Gulf Oil Spill. From anthro-biology to ethno-zoology, there is something to study and there will be practical applications that need to be developed from knowledge that is both old and new; general and...
By: D. Vogt
Since the advent of major national space programs in the 1950s, forward-seeing scientists have assumed that we will soon not only be landing spacecraft on the Moon, but setting up permanent bases or colonies there. Unfortunately, to date this has not happened, more, it must...
Astro physics - Stellar Distances: Light years, parsecs and AU's explained
By: D. Vogt
Because distances in deep space are so vast, astronomers have adopted a number of stellar distance units to make them more manageable. Three of the most important of these are the astronomical unit (AU), the parsec, and the light-year. Without such units, it would quickly...
What is the technological singularity?
By: D. Vogt
A technological singularity is a point at which capability for technological progress becomes both immense and self-reproducing (that is, one improvement promptly makes possible another improvement, allowing for rapid and indefinite progress). In particular, it refers to a theoretical point in the future at which...
What are the general design principles of a spacecraft
By: D. Vogt
Spacecraft are the most complex transportation systems ever built by humans - and the International Space Station, the most successful semi-permanent abode in space yet, is also the most expensive structure ever built. For such technically complex devices, then, obviously there are a very large...

 

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