Population

Today our World population is hiking a lot… What’s the reason for this? This should be controlled, if not! Surely the future will suffer a lot. Let us see the top 10 countries having more population.
World - 6,720,125,767 - 100%
China - 1,325,880,000 - 19.87%
India - 1,137,509,600 - 17.05%
United States - 305,029,000 - 4.57%
Indonesia - 231,627,000 - 3.47%
Brazil - 190,051,000 - 2.81%
Pakistan - 164,488,000 - 2.47%
Bangladesh - 158,665,000 - 2.38%
Nigeria - 148,093,000 - 2.22%
Russia - 141,888,900 - 2.13%
Japan - 127,690,000 - 1.91%

Compare our Today’s World’s population with the past one.
The amount of population given below is an approximate one…
1950 - 2,518,629,000
1960 - 2,981,659,000
1970 - 3,692,492,000
1980 - 4,434,682,000
1990 - 5,263,593,000
2000 - 6,070,581,000
2005 - 6,453,628,000
2008 - 6,720,125,000
I think that now you have got some idea about our World’s population. Have a nice day…

Googlebot

Hey guys, we all know that Pagerank is an important one for all of those, who owns a website or a blog and we also try very hard to get a pagerank or increasing the excisting one. And we also wish that our webpages should be indexed on the google search engine as soon as it can. But do you know who is allotting this Pagerank and indexing our webpages in the google search engine. Is it done by only one person or a group of people? Who is doing this work for google? The answer is Googlebot. A Googlebot is a search bot used by Google. It collects documents from the web to build a searchable index for the Google search engine.

If a webmaster wishes to restrict the information on their site available to a Googlebot, or another well-behaved spider, they can do so with the appropriate directives in a robots.txt file, or by adding the meta tag <meta name="Googlebot" content="nofollow" /> to the webpage. Googlebot requests to Web servers are discernible from their user-agent string 'Googlebot'.

Googlebot has two versions, deepbot and freshbot. Deepbot, the deep crawler, tries to follow every link on the web and download as many pages as it can to the Google indexers. It completes this process about once a month. Freshbot crawls the web looking for fresh content. It visits websites that change frequently, according to how frequently they change. Currently Googlebot only follows HREF links and SRC links.

Googlebot discovers pages by harvesting all of the links on every page it finds. It then follows these links to other web pages. New web pages must be linked to from another known page on the web in order to be crawled and indexed.

A problem which webmasters have often noted with the Googlebot is that it takes up an enormous amount of bandwidth. This can cause websites to exceed their bandwidth limit and be taken down temporarily. This is especially troublesome for mirror sites which host many gigabytes of data. Google provides "Webmaster Tools" that allow website owners to throttle the crawl rate.

Thus I think that all of you had now got the answer for the riddle with the help of my post. Thank you for reading this post and keep in touch to know more about unrevealed matters…

Digital photo frame

Do you all searching for the exact location to buy quality digital photo frame at cheap prices? Then don't worry and don't go any where to search for the correct place. Here check this post, I am going suggest a site to all of you, from where we can get our desired digital photo frames of various styles and sizes. The site is very well designed and it will be very easy for all the users to navigate all the pages even for the users who doesn't know any thing about the web pages. In the site we can get all kinds of information like information about the various digital frames, Portable DVD players and so on. Here they listed out the products based on best sellers, best prices, quality etc,. so that it will be very easy for the users to select he seller who satisfies their requirement. The information which are provided by them are really useful very informative. If we buy the products from them means, then we can enjoy some cool offers like free gifts, certificates, coupons and so on. We don't need to bother about the shipping, because they made us the shipping of products very easy and protect us from the fraudulent activities. So if you wanna buy digital frames, then don't go and search any where, check this site and get it easily.

Blue sea

Hi friends it’s time for me to ask you a small question… The Question is “Why the sea appears blue?”

If you don’t know, I’m ready to give you the answer. There are 2 reasons for the sea to appear blue.

The sea reflects the sky.

You have probably noticed that the sea is not very blue-looking when the sky is overcast. Water reflects and scatters the light that strikes it; this is shown by the fact that you can see your reflection in puddles. When the sky is brilliant blue, the sea is also, because it reflects the blue of the sky.

The sea refracts light

Blue light is more easily bent, or refracted, than red light; thus, light refracted back from the surface of the sea appears blue. Furthermore, when you are underwater the water around you appears blue because more blue light is scattered back to your eye than red light.

Ok now your doubt is cleared, right! See you guys later, Bye……

Rainbow

Hi friends, I know that it will be a nice one to see a rainbow on the sky during rainy seasons… But any one had ever thought about how it is formed… If not, don’t worry. Reveal of the unknown is there for you to reveal you these information’s.
Rainbows are optical illusions and meteorological phenomena that cause a spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere. They take the form of a multicolored arc, with red on the outer part of the arch and violet on the inner section of the arch. More rarely, a secondary rainbow is seen, which is a second, fainter arc outside the primary arc, with colors in the opposite order, that is, with violet on the outside and red on the inside.
Rainbows can be caused by other forms of water than rain, including mist, spray, dew, fog, and ice. Moreover, rainbows can have shapes other than a bow (arc), including stripes, circles, or even flames.
Rainbows can be observed whenever there are water drops in the air and sunlight shining from behind a person at a low altitude angle (on the ground). The most spectacular rainbow displays happen when half of the sky is still dark with draining clouds and the observer is at a spot with clear sky in the direction of the Sun. The result is a luminous rainbow that contrasts with the darkened background.
The rainbow effect is also commonly seen near waterfalls or fountains. Rainbow fringes can sometimes be seen at the edges of backlit clouds and as vertical bands in distant rain. The effect can also be artificially created by dispersing water droplets into the air during a sunny day. Rarely, a moon bow, lunar rainbow or night-time rainbow, can be seen on strongly moonlit nights. As human visual perception for color is poor in low light, moon bows are often perceived to be white.
Thus I believe that, this information will be helpful for you know about the formation of rainbows. Thanks for reading this post and have a nice day…

Best prices for Laptops

Now a days Laptops become an inenvitable one for all of us. Without the computers no work can be done and it is not possile too. Computers just changed the entire world, no one can go against with this quote. But the main thing is how far we reaches the correct hands to get our Laptops with best quality and cheap prices, that is very important while getting them. Don't worry about it, here check this post and try to get the information about the site Savebuckets.co.uk. They really provides us a great amount of information about the sellers, who sells quality Laptops at cheap prices. They compares each and every seller based on some criteria such as best prices, quality, warranty and so on. This piece of information will really help us a lot to get our own Laptops at our desired prices and in turn we save lot of money through it. So here after there is no need for us to worry about the places where to get our laptops. By easily checking this site we can simply reach the correct destination and can get our laptops. So try this site and enjoy the days with your own laptop.

Chloroform

Hi friends, welcome to my blog once again. Our todays topic is about Chloroform. I think that you people will have some idea about what is chloroform. But not well known about it. So let’s know fully about it… Chloroform was discovered in July 1831 by the American physician Samuel Guthrie , and independently a few months later by the French chemist Eugene Soubeiran and Justus von Liebig in Germany, all of them using variations of the haloform reaction. Soubeiran produced chloroform through the action of chlorine bleach powder (calcium hypochlorite) on acetone (2-propanone) as well as ethanol. Chloroform was named and chemically characterised in 1834 by Jean-Baptiste Dumas.

In 1847, the Edinburgh obstetrician James Young Simpson first used chloroform for general anesthesia during childbirth. The use of chloroform during surgery expanded rapidly thereafter in Europe. In the United States, chloroform began to replace ether as an anesthetic at the beginning of the 20th century; however, it was quickly abandoned in favor of ether upon discovery of its toxicity, especially its tendency to cause fatal cardiac arrhythmia analogous to what is now termed "sudden sniffer's death".

Industrially, chloroform is produced by heating a mixture of chlorine and either chloromethane or methane. At 400-500 °C, a free radical halogenation occurs, converting the methane or chloromethane to progressively more chlorinated compounds.

CH4 + Cl2 → CH3Cl + HCl

CH3Cl + Cl2 → CH2Cl2 + HCl

CH2Cl2 + Cl2 → CHCl3 + HCl

Chloroform undergoes further chlorination to give CCl4:

CHCl3 + Cl2 → CCl4 + HCl

The output of this process is a mixture of the four chloromethanes: chloromethane, dichloromethane, chloroform (trichloromethane), and carbon tetrachloride, which are then separated by distillation.
Thus finally chloroform is obtained.

I think that this post will surely help you a lot in knowing about Chloroform and its preparation… Thanks a lot for reading this post and keep in touch…