Month: August 2008

Maths: Fourth Dimension Videos

In mathematics (and physics) a sequence of n numbers can be understood as a location in an n-dimensional space. When n=4, the set of all such locations is called the fourth dimension. Now, Mathematicians create videos that help in visualizing four-dimensional objects.

In mathematics (and physics) a sequence of n numbers can be understood as a location in an n-dimensional space. When n=4, the set of all such locations is called the fourth dimension. Now, Mathematicians create videos that help in visualizing four-dimensional objects.

The 4th dimension may be interpreted either as time, or as a literal fourth dimension of space, a fourth spatial dimension. Rotating shadow of a tesseract rotating on a single axis and a single plane is fine example of 4th dimension.

From the article:

Three dimensions can be so limiting.

Mathematicians, freed in their imaginations from physical constraints, can conjure up descriptions of objects in many more dimensions than that. Points in a plane can be described with pairs of numbers, and points in space can be described with triples. Why not quadruples, or quintuples, or more?

You can watch all videos here online.

Windows XP Still Beating Windows Vista Sales


Windows XP still outselling Windows Vista. Most Business PC user are still overwhelmingly opting for XP, computer giant HP has revealed.

MS-Windows Vista was Released on November 8, 2006 (RTM version) but Windows XP still outselling Windows Vista. Most Business PC user are still overwhelmingly opting for XP, computer giant HP has revealed. From the article:

“From the 30th of June, we have no longer been able to ship a PC with a XP licence,” said Jane Bradburn, Market Development Manager, Commercial Notebooks for HP Australia.

“However, what we have been able to do with Microsoft is ship PCs with a Vista Business licence but with XP pre-loaded. That is still the majority of business computers we are selling today.”

So, in other words, Microsoft counts a sale for Vista, even though the computer manufacturer has really sold XP.

Does this even matter? I don’t think so, as Microsoft still gets share, no matter what OS sells more.

Viruses Can Get Infected By Another Biological Agent


Scientists have discovered a virus that can infect another virus i.e. viruses can catch colds, says study that redefines life itself.


(Rotavirus particle, source – wikipedia)

A virus is a microorganism. A virus is a small particle that can infect living organisms. Viruses do not belong to any of the six kingdoms. They are generally seen as being between living organisms and inanimate nature, rather than alive, since they do not show all characteristics of living organisms.

Virus is biological agent which can cause common diseases such as common cold, influenza, chickenpox, diarrhea and cold sores. Serious diseases such as Ebola, AIDS, avian influenza etc. Now, scientists have discovered a virus that can infect another virus i.e. viruses can catch colds, says study that redefines life itself.

From the article

There’s no doubt that this is a living organism. The fact that it can get sick makes it more alive.