Friday, July 12, 2013
Thursday, July 11, 2013
Credit: NASA
The majority of stars in the galaxy, including our Sun, Sirius and Alpha Centauri A and B are all main sequence stars. The Sun's relative longevity and stability have provided the conditions necessary for life to evolve here on Earth. Our understanding of the processes involved and characteristics of this key group of stars has progressed in parallel with our understanding of nuclear physics.
Categories:
Imagine
you were standing in the center of a circle 100 meters in radius. How
long do you think it would take to leave the circle? Usain Bolt could
do it in 10 seconds, but most people could leave the circle in under a
minute. After all, it’s just a casual 100 meter stroll and you are out
of the circle. But suppose we
Categories:
The center of our galaxy is about 27,000 light years away in the direction of the constellation Sagittarius. That isn't a large distance on astronomical scales, but it is hidden by gas and dust so we can't observe it in visible light. We can, however, observe it at infrared and radio wavelengths,
Categories:
In
the mid-1800s, astronomy faced a serious problem. No one knew how the
stars shone. Now a little mystery never hurt anyone, but in this case
it was deeply perplexing. By this time we had a solid understanding of
energy, and that energy is conserved. That is, energy must come from
somewhere, and it
Categories:
In Medieval Europe, the physical universe could be divided into two parts: the Earth and earthly events (chaotic and temporary) and the heavens (structured and eternal). That's a bit of an over simplification, but the idea was that the Earth and heavens were governed by different rules. In the heavens the stars were fixed and eternal. The motion of the planets were thought to move in
Categories:
At the end of the 1800s we finally knew how the universe worked. Newton’s laws of motion and gravity had been studied for 200 years, and had become the pinnacle of scientific precision. James Clerk Maxwell had unified the electricity, magnetism and light into a single elegant theory, and
Categories:
Wednesday, July 10, 2013
Stats
|
Categories:
Sanity4J is primarily a tool for running multiple Java code static analysis tools.
Static Analysis tools are used to provide pointers to possible issues in code during the development cycle, as an automated form of code-review. Use of these tools helps to improve the quality of code and reduce the amount of software defects that are delivered for system testing.
Categories:
Subscribe to:
Posts (Atom)