Top 10 social bookmarking websites 2011

Lots of people use social bookmarking websites for their website, because social bookmarking websites are very useful for their websites. There are lots of social bookmarking websites in the internet world but some websites are very popular and a lot of people visit them in everyday. We know what s the best social bookmarking web site, it’s Twitter.

But there are more social bookmarking websites too. We made this video for you, you can learn what s The top ten social bookmarking sites in the world in 2011.

Top 10 social networking sites 2011

Social networking sites are part of our life. Web world is contiuning to grow, there are lots of social networking websites but some websites are more popular than others.

We know best social networking sites, they are: facebook, linkedin, myspace and orkut(especially in latin america countries). Facebook has got 600 millions visitors per a month so it’s the leader!. But there are other web sites too.

You can watch a video about top social networking websites in 2011 years;

The Nabatean City of Petra Jordan – City of Petra pictures

This is one of the wonders of the world; Petra is an archaeological relic in Jordanian. This beautiful place lies between the mountains which form the eastern wing of a large valley of Wadi Aramba, precisely in the lowlands. Petra means rock, a former city that was founded by chiseling the stone walls, exactly in a 40-meter-high rock.

Petra was founded by Nabatean tribe in nine eighteenth dynasty of Egypt by the King Aretas IV as the city that are difficult to be attacked by enemy and secure from natural disasters such as sandstorms. Petra was the capital of the kingdom, which was built with an elaborate irrigation system and a theater that holds 4000 people. Continue reading →

Neutrinos and X-rays .. Neutrinos are released in nuclear fusion processes

Neutrinos are elementary particles, whose existence was predicted in 1930 by Pauli. It was clear to him that apply to core processes the law of conservation of energy also has that something was missing and that this added to the particle “neutrino” could be solved.

It is now fully accepted that the neutrino is a tiny particle with no charge and with very low mass. Neutrinos are released in nuclear fusion processes, as they proceed in stars in supernova explosions, or in the particle accelerators of particle physicists. Neutrinos have little interaction with other matter. Every second, billions of neutrinos fly through our bodies without us noticing something like this. The neutrino is a “nothing”. But still ..

Detect neutrinos is due to the low interaction with other matter very difficult. Raymond Davis has discussed for 40 years, with the possible techniques of their evidence and, despite great skepticism of his colleagues, continued the search. The first evidence came in the 50s in a reactor (Brookhaven’s Graphite Research Kernreactor). Later, the detection of released in the solar neutrinos in a detector was in the “Homestake mine in South Dakota (USA), and so have the stamina and inventiveness of Davis rewarded. Continue reading →

Migrating animals in the Serengeti park

The Serengeti ecosystem is a geographical region located in north-western Tanzania and extends to south-western Kenya between latitudes 1 and 3 S and longitudes 34 and 36 E. It spans some 30,000 km2.

The Serengeti hosts the largest migration in the world, which is one of the ten natural travel wonders of the world. The region contains several national parks and game reserves. Serengeti is derived from the Maasai language, Maa; specifically, “Serengit” meaning “Endless Plains”. Approximately 70 larger mammal and some 500 avifauna species are found there. This high diversity in terms of species is a function of diverse habitats ranging from riverine forests, swamps, kopjes, grasslands and woodlands. Blue Wildebeests, gazelles, zebras and buffalos are some of the commonly found large mammals in the region.Currently there is controversy surrounding a proposed road that is to be built through the Serengeti in Tanzania. Continue reading →