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?

Amazing Facts about Sex.

Did You Know…..

      I.            The average male produces several million new sperm daily, while a female produce no more than that throughout her lifetime. A man will ejaculate about 1 to 2 trillion sperm in his lifetime.

 II.            Unlike other cells, which contain an individual's full DNA, the egg of female and sperm of male each contain only half of the DNA required to reproduce a new human. A single cell contains 6 billion steps of DNA.

III.            Use of the condom was first noted in published literature in the early 1500A.D. It was originally made of linen, and historians believe the legendary lover Casanova used linen condoms. The first legalized condoms in the US were made from vulcanized rubber in the 1870A.D. They were expensive and annoyingly thick and meant to be reused. Today, Japan leads the world in condom use.

Science and spirituality

Pariwartan (crazy diamond)

Earlier science and spirituality used to be considered as two opposite parts of life. Belief in one meant disbelief in another but time went on and the terms have been expressed together. Today science defines spiritualism and vice versa.

After the World War II, industrial revolution began. Europe and America proved themselves a step ahead than the rest part of the globe. Sophisticated technologies made the world amazed and we easterners were not the exception. Our identity began to fade and we became the captives of the materialistic world. Then there was no option left for us than believing what the westerns and the Americans said

Mental health, addiction and community health

 Rosy Thapa, microbiology

Mental health can be defined as “a state of emotional and psychological well-being in which an individual is able to use his or her cognitive and emotional capabilities, function in society, and meet the ordinary demands of everyday life”. Mental health is not mere absence of mental illness. Mental illness can be classified into three types: psychosis, neurosis and epilepsy. Addiction is a chronic progressive and sometimes fatal disorder with both genetic and environmental roots.

What’s A Google?

When you hear the word Google the first image that comes to mind has to be the famous internet search engine but does the word actually mean anything? Well the answer is a firm yes because it comes from the term “Googol” which represents a number (written as a 1 followed by 100 zeros) so large that it’s actually larger than the total number of atoms in the known universe.

Tortoise of turtle

All tortoises are turtles but not all turtles are tortoises.

You know it is a tortoise if it

·        lives on land

·        eats only planets

·        has a large, hard, domelike shell

·        is hidden-necked.

Nobel Prize in Physics 2010 for Graphene -- 'Two-Dimensional' Material

The Royal Swedish Academy of Sciences has awarded the Nobel Prize in Physics for 2010 to Andre Geim and Konstantin Novoselov, both of the University of Manchester, "for groundbreaking experiments regarding the two-dimensional material graphene."



 Konstantin Novoselov and Andre Geim



A thin flake of ordinary carbon, just one atom thick, lies behind this year's Nobel Prize in Physics. Geim and Novoselov have shown that carbon in such a flat form has exceptional properties that originate from the remarkable world of quantum physics.

GLOBAL WARMING

Bhaba Amatya

Zoology Department

Prithvi Narayan Campus, Pokhara

bhabaamatya@yahoo.com

Global warming refers to the rising global temperature. It causes climate change that is responsible for: flood; frequent and intense rain and snow; change in the normal occurrence of monsoon thereby affecting crop production; drought; land slide; vector borne diseases; more frequent tropical storms; forest fire and extinction of species due to the loss of ecological niches.

          Scientists all over the world believe that global warming is caused mainly by two processes as given below:

1) Increase in the level of green house gases such as carbon dioxide (Co₂), chlorofluorocarbons (CFCS), methane and water vapour due to burning of fossil fuel and deforestation.

2) Milankovitch cycle