Saturday, February 26, 2011

Hawk-Eye : How does it work?

It’s the cricket world cup season! So, all the fans are getting excited, and the game is getting competitive.

Cricket is a game where win or loss is defined by a thin margin. Currently, a lot of money is involved in the game and a huge number of spectators are waiting to see a favorable result for their team. Therefore, not only the responsibility of players to win and play without mistakes, but accuracy of decisions made by umpires have became critically important factors.

However, umpires are also human. Naturally, there may be errors when they take decisions. To support umpires to take the correct decision (and minimize the margin of error), lot of new technical utilities have been used recently. This is going to be about one of those technical advancements of the sport; Hawk-eye.

Friday, February 25, 2011

Where's your data? – Google and Microsoft Data centers

Are you worried about where you keep your money? – Answer is obviously “Yes”. In the modern information society, data is equally or more important when compared with money. Not to mention that data is referred here to the information gathered at the computers. But how many of you know about where your data is stored. We know about data stored in our computer, or in our backup device. But what about the data stored in internet.

Today most people use internet based email services, picture albums, video hosting facilities, document management systems…. and lot more. Technically, considerable amount of our digital information is out there on the internet. We use Gmail, yahoo mail, live mail for our email purposes. And flicker, Picasa for sharing our pictures. YouTube for videos and Google Docs, Office online for various documents. But the locations of the storage and what happen behind is a complete mystery for lot of us.

All those data used and gathered by internet services and applications are stored at huge data centers of those service providers (if not, at third-party datacenters). Following is a quick look at the datacenters used by two information giants; Google and Microsoft.