The symbol of mother language in Bangladesh which represent the blood that was shed to protect the mother language in 1952 in Bangladesh |
Monday, February 20, 2012
International Mother Language Day 2012
Wednesday, October 5, 2011
Antimatter Engine
In the dawn of the 21st century human are reaching to the new horizon, where man never stepped. Every single day they wake up and think how I can make the day better. The day people learned how to use a wheel human reached a new era. Every day they developed their ideas and connecting them. As a collaborate working now human are thinking about anti matter engine. The concept of antimatter engine still has some disadvantages and advantages.
The general idea of anti-particle is any particle has its opposite charged component. For example electron has negative charge and its antimatter positron has positive charge. When this two particle collides it annihilates into pure energy. Most of the starships cruiser of the future will use antimatter as fuel since tons of chemical fuel is needed to reach Mars where a teaspoon-full of anti-matter can take us to next Galaxy. When matter and antimatter collides, creates a burst of energy where no energy is lost such as heat loss for chemical engines. This is what makes antimatter engine most powerful engine.
The best thing about antimatter engine is the safety. In order to save time these days scientist are thinking of using nuclear engine. Traveling in short time means less cosmic ray exposure for the astronauts. The current technology provides ample power for a three year mission. But nuclear reactors are complex and anything can go wrong very easily. However an anti-matter engine offers the same advantages in a relatively simple way. Nuclear engines are radioactive even they are used up. On the other hand anti-matter engine does not have any leftover radiation after all the fuel is used. So there are no safety concerns if the empty antimatter reactor accidentally reenter earth’s orbit. Launching is also safe and clean. The danger zone for an antimatter engine is only 1km radius zone. A nuclear reactor accident could result a release of radioactive particle in the atmosphere where antimatter reaction would release a burst of gamma rays. These gamma rays will be gone in an instant. Speed is another significant advantage for antimatter, according to NASA scientist. A normal nuclear engine could take astronauts in 180 days, where the advanced designed ship for antimatter engine will take astronauts in only 40 days.
One technical challenge to making a antimatter propelled spacecraft a reality is the cost to produce the antimatters. Because of its spectacular effect on normal matter, there is not a lot of antimatter sitting around. In space, it is created in collisions of high-speed particles called cosmic rays. On Earth, it has to be created in particle accelerators, immense machines that smash atoms together. The machines are normally used to discover how the universe works on a deep, fundamental level, but they can be harnessed as antimatter factories. 10 mg of antimatter would cost millions. Another challenge is storing enough positrons in a small space. Because they annihilate normal matter, you can't just stuff them in a bottle. Instead, they have to be contained with electric and magnetic fields which is costly.
If we can make the antimatter engine and using the advantages and overcoming the disadvantages reaching mars will be our next tourist spot and we will ask you to book your seat.
Sunday, October 31, 2010
music today
You say Hannah Montana, I say Green Day.
You say Owl City, I say Linkin Park.
You say Jonas Brothers, I say Aerosmith.
You say Justin Bieber, I say Queen.
You say Taylor Swift, I say Guns & Roses.
95% of teens these days listen to the same formulaic, crappy pop over and over again.
Thursday, October 28, 2010
Esperanto
he idea of Esperanto is: the foundation of a neutral language will help break down barriers between people and help everyone see each other as neighbors. [L. Zamenhof, 1912] As an ordinary speaker of Esperanto, you don't often think about the "foundation of a neutral language" and those kinds of fancy expressions. You just enjoy having the ability to express yourself freely in conversations with people from other countries and cultures.In the beginning, it was called Lingvo Internacia - the international language. When Zamenhof introduced the language, he used the name Dr. Esperanto (it means 'doctor who hopes'). Some people started to call it "the language of Dr. Esperanto", which was eventually shortened to just "Esperanto", which is the most common name today.