NASA Discovers a New Planet in Our Solar System

The planet, larger than Pluto, was discovered using the Samuel Oscine Telescope at Palomar Observatory near San Diego, Calif. The discovery was announced by planetary scientist Dr. Mike Brown of the California Institute of Technology in Pasadena, Calif., whose research is partly funded by NASA.
While this object has many similarities to others in the Kuiper belt, its sheer size in relation to the nine known planets means that it can only be classified as a planet, according to Dr. Brown. Currently about 97 times further from the sun than the Earth, the planet is the farthest-known object in the solar system, and the third brightest of the Kuiper belt objects.

CERN (European Organization for Nuclear Research) moves closer to antihydrogen spectroscopy

Physicists at CERN have taken a big step towards making the first spectroscopic measurements on a beam of antihydrogen atoms. The antihydrogen atoms, which consist of an antielectron orbiting an antiproton, were made by members of the lab's ASACUSA group. The beams could be used to carry out the first detailed studies of the energy levels in antihydrogen.
Measuring in detail the energy levels in antihydrogen is important because the Standard Model of particle physics says they should be identical to those of hydrogen. Any slight differences in the "fine structure" of the levels compared to ordinary hydrogen could shed light on why there is so much more matter than antimatter in the universe.
The breakthrough comes just weeks after researchers in the ALPHA collaboration at CERN succeeded in trapping 38 antihydrogen atoms for about 170 ms.This was the first time that antimatter atoms had been stored for long enough to measure their properties in detail and, taken together, the two results represent major advances in studies of antimatter.
by:
Sailes Bataju
BSc. 1st year

Astronomy

Since the beginnings of humankind people have gazed where they can. Before the dawn of history someone noticed that certain celestial bodies moved in orderly and predictable paths, and astronomy 'an ancient science' was born. Yet some of science's newest discoveries have been made in this same field, which includes the study of all matter outside Earth's atmosphere. From simple observations of the motions of the sun and the stars as they pass across the sky, to advanced theories of the exotic states of matter in collapsed stars, astronomy has spanned the ages.

Ahead of Einstein’s Time

 What would Albert Einstein think if he were alive today?

         As a theorist who was interested in experiments, in his early career at least, he would be pleased to know that a small band of 21^st century physicists are still trying to find flaws in the special theory of relativity, while others are busy checking out the predictions of the general theory, And having spent the final years of his life trying to unify general relativity with electromagnetism, without success, he could be forgiven for thinking that criticisms of his relative non-productivity in those years were somewhat unfair. No-one else has succeeded where he failed.

Colony Collapse Disorder (CCD)

Einstein once said “if bees disappear from the surface of the Earth, man would have no more than 4 years to live.”

Colony Collapse Disorder (CCD) or honey bee depopulation syndrome (HBDS) is a phenomenon in which worker bees from a beehive or honey bee colony abruptly disappear. The term colony collapse disorder was first applied to a drastic rise in the number of disappearances of Western honey bee colonies in North America in late 2006. European beekeepers observed similar phenomena in Belgium, France, the Netherlands, Greece, Italy, Portugal, and Spain,  and initial reports have also come in from Switzerland and Germany, albeit to a lesser degree while the Northern Ireland Assembly received reports of a decline greater than 50% Possible cases of CCD have also been reported in Taiwan since April 2007. The cause or causes of the syndrome are not yet fully understood, although many authorities attribute the problem to biotic factors, environmental change or modern use of equipments. Their descriptions are given below:-

HUMOUR

A renowned Professor lecturing on the topic of the universe had just stated that in about a billion years, according to her calculation, the Earth would fall into the sun in a fiery death. In the back of the auditorium, a tremendous voice piped "Excuse me, Professor, but h-h-how long did you say it would be? Professor calmly replied" About a billion years."

A sigh of relief was heard. "Whew! For a minute there, I thought you'd said a million years."

Give me an example

          Chief instructur: Now remember statistics don’t lie, if 12 man can build a house in one day then one man can build same house in 12 days. Do you understand what I mean? Anup, give me an example.

          Anup: If one boat could cross the ocean in 6 days, 6 boats could cross the ocean in one day.

Ashmita Poudel

 

REVERSE OF THE LOUDSPEAKER

Loud speaker is a device which converts the electrical energy into the sound energy. But how the loud speaker works? The shape of loudspeaker is like a cone made of plastic. In the middle, the round shaped permanent magnet is fixed which produces fixed electric field. In the middle of magnet there is space where a piece of soft iron core is kept. This iron core is wounded by the wires and it can move.

When the ac current is supplied, the pole of magnet also changes and produces attraction and repulsion force between the magnet and iron. Due to this movement of soft iron core, vibration is produced which results mechanical wave (sound).  In this way the loudspeaker sends out sound in all directions.

Now what happens if the loudspeaker is made to work in the reverse way?