SRC Blog

 Black Hole and its Latest Discovery   By – Monodivya Dewan   For many years the term black hole has fascinated millions, so without any further due let us dig into this topic.  The term black hole is of a very recent origin. It was coined in 1967 by an American astronomer John Wheeler as a graphic description of an idea that goes back at least two hundred years, to the time where the wave particle duality of quantum mechanics was bought into the lime light.  • If the light is made up of wave it was not clear how it would respond to gravity  • If the light is composed of particle, gravity might have an important effect.  On this assumption, John Michell, a Cambridge don, pointed out that a star that was sufficiently massive and compact would have such a strong gravitational field that light could not escape. Michell suggested that there might be a large number of stars like this. Although we would not be able to see them. Such objects are what we now call black holes as they are black

  SPECIAL THEORY OF RELATIVITY      TWINKLE GURUNG (PHYSICS DEPARTMENT) In physics ,the special theory of relativity ,is a scientific theory regarding the relationship between space and time. In Albert Einstein’s original treatment ,the theory is based on two postulates: 1.The laws of physics are invariant in all inertial frames of reference . 2.The speed of light in vacuum is the same for all observers , regardless of the motion of the light source or observer. Special relativity was originally proposed by Albert Einstein on 26 September 1905. The incompatibility of Newtonian mechanics with Maxwells’s equations of electromagnetism and experimentally the Michelson-Morley null result demonstrated that the historically hypothesized luminiferous aether did not exist.This led to Einsteins’s development of special relativity ,which corrects mechanics to handle situations involving all motions and especially those at a speed close to that of light (known as relativistic velociti

खगोल जीव विज्ञान १०१ : छोटो प्रस्तुति अन्मोल सुब्ब ( भौतिकी विभाग  ) द्वारा  जबदेखि प्रारम्भिक मानिसहरु रातको आकाश र ताराहरु लाई आगोको गोलो को रूप मा देखे, मानवता ले सोध्नु भएको छ कि उनीहरु एक्लै छन् कि छैनन्? प्राचीन ग्रीकहरु हाम्रो ग्रह भन्दा बाहिर जीवन मा विश्वास गरे तर उनीहरु लाई आफ्नो विश्वास साबित गर्न को लागी उन्नत प्रविधि थियेनन । २० औं शताब्दीको उत्तरार्धमा, एक मंगल ग्रह उल्कापिण्डमा जीवाणुको जीवनको सम्भावित अवशेष र अन्य ताराहरु को परिक्रमा गर्ने पहिलो ग्रहहरु को खोजले पृथ्वी भन्दा पर जीवन को अस्तित्व को प्रश्न लाई वैज्ञानिक को अग्रणी मा ल्यायो। २१ औं शताब्दीमा खगोल जीव विज्ञान नामक नयाँ क्षेत्र विज्ञानमा जन्मिएको थियो। खगोल जीवविज्ञान के हो? खगोल जीव विज्ञान ब्रह्माण्डमा जीवनको उत्पत्ति, विकास, वितरण र भविष्यको अध्ययन हो। यो क्षेत्र मा तल दिइएको शामिल छ: १. हाम्रो सौर्यमण्डलमा बस्न योग्य वातावरण र हाम्रो सौर्यमण्डल बाहिर बस्न योग्य ग्रहहरुको खोज, २. पृथ्वी मा जीवन को उत्पत्ति र प्रारम्भिक विकास मा अनुसन्धान, 3. पूर्व जीवन रसायन शास्त्र को प्रमाण को लागी खोज, र ४. अन्य ग्रहहरु

by Esha Chettri (Physics Dept.) THE MILKY WAY GALAXY   The Milky Way Galaxy is a large spiral system consisting of several hundred billion of stars including our Sun and the Earth. Earth is located about halfway between the center of the Milky Way and its outer edge. It’s estimated visible diameter is 100,000-200, 000 light-years. It is called a spiral galaxy because if we could view it from the top or bottom, it would look like a spinning pinwheel. Galileo was the first to see the Milky Way Galaxy in 1610.  Milky Way Galaxy  The milky Way gets its name from a Greek myth about the Goddess Hera who sprayed milk across the sky. If you are someone fond of stargazing like I am, you could see about 6000 stars belonging to the milky way from Earth without a telescope. If you think of the entire Milky way Galaxy as a giant pizza then all the stars you can see from the Earth fall within about one pepperoni on that pizza. artistic picture of milky way galaxy misconceptions about how to find th