Today
was a amazing and interesting lecture based on our wonderful living world.
Professor MRN Murthy explained today’s students about the living universe.It was
a mesmerizing topic and presentation which attracted all the students present.We
learnt a lot of unique facts and tried to acquire knowledge as much as possible
by Prof. M.R.N Murthy on the topic The Living World.
The cosmos(the universe)
and the brain are the wondering subjects and have some sort of connection in
them.
Cosmos- This is far as anything on Earth can see. The age of
the universe is 14 billion years, so in theory we are unable to
observe anything further than 14 billion light-years away. Due to the expansion
of space, these objects are now around 46 billion light years away — the limit
of the observable universe. In fact, the photons in the cosmic microwave
background have travelled a cool 45 billion light years to get here. That makes the visible universe some 90 billion light years across. That's big but the universe is almost
certainly much bigger.
The two wonders of the world is cosmos and the
brain. The small muscle tissue present in living organisms is really an gift to
us. It is a mini super computer which has the thirst to know about the amazing
wonders.
The story of Earth is an epic filled with crises,
catastrophes, and remarkable, repeated change. Earth traces its origin to
simple atoms that were created in the big bang, transformed into heavy elements
in stellar explosions, and then forged into a planet inside the nebula that
gave birth to the solar system. Like many other planets, Earth went through
phases of melting, volcanism, and bombardment by asteroids. But only on Earth
did events lead to a flourishing biosphere—life. And once life was established,
it drove the evolution of our planet in startling new directions. Rocks that date to the early stages of the
formation of the solar system arrive on our planet all the time. They are
chondrite meteorites, which are 4.567 billion years old, older than Earth
itself.
Green Earth: The green of photosynthetic life is the most visible sign of the living world.
We also
learnt some interesting facts about the celestial body like:
Sun is a
celestial body which is 150,000,000 away from sun and 5000 years old and takes
8 to 9 min to reach Earth.
Comet is a
celestial body which is also believed as granting wishes but if collides with
Earth it can cause a catastrophe and it consists of solid carbon-dioxide and
ice.
Important fact- 12 November 2014
ESA’s Rosetta mission has soft-landed its Philae probe on a comet, the first time in history that such an extraordinary feat has been achieved.
“Rosetta is trying to answer the very big questions about the history of our Solar System. What were the conditions like at its infancy and how did it evolve? What role did comets play in this evolution? How do comets work?”
Evolution of gases
After loss of the hydrogen, helium and other hydrogen-containing gases from early Earth due to the Sun's radiation, primitive Earth was devoid of an atmosphere. The first atmosphere was formed by outgassing of gases trapped in the interior of the early Earth, which still goes on today in volcanoes.
Life started to have a major impact on the environment once photosynthetic organisms evolved. These organisms, blue-green algae fed off atmospheric carbon dioxide and converted much of it into marine sediments consisting of the shells of sea creatures. While photosynthetic life reduced the carbon dioxide content of the atmosphere, it also started to produce oxygen. Once oxygen had been produced, ultraviolet light split the molecules, producing the ozone UV shield as a by-product. Only at this point did life move out of the oceans and respiration evolved.
Present challenge-the arising crisis of the present day is
the shortage of power.
Newtons law of inertia-
Uranium which divides the nucleolus on its own without any external force and iodine which goes on decreasing for a fortnight without any external force.
Invention of microscope is great contribution
We also learnt that there were many microscopes designed at the beginning to observe minute things which were not that magnified. Then the fact that electrons also emit light gave rise to electrone microscope which helped in observing minute things which were far from the observation of normal microscope. Then as time went along there were
X-ray which helped in determining the structure of the molecule.
Some electron microscopes can magnify specimens up to 2 million times, while the best light microscopes are limited to magnifications of 2000 times. Both electron and light microscopes have resolution limitations, imposed by their wavelength.
Some electron microscopes can magnify specimens up to 2 million times, while the best light microscopes are limited to magnifications of 2000 times. Both electron and light microscopes have resolution limitations, imposed by their wavelength.
DNA is the essential component and its unique from one another.there’s a sequence structure function relationship.
Quantum mechanics-
Rate of radioactive decay depends on the number of nuclei present.
QUESTIONNAIRE
SESSION-
o IS RAMAYANA THE ENSCRIPTURE TRUE IN ALL THE FACTS?
o Some facts are not
true in all aspects. Like that of pushpaka vimana.
o Some scientists are against “theory of evolution”?
o Theory of evolution is true . its better to believe
the fact.
o Researches are
going on based on anti-aging?
o Aging is a lively process in all living organisms. We
can stop aging but its not necessary based on today’s situation
o If all the honeybees die , humans will also die in
the next four years. Is it true?
o No its not, it wont affect the diversity of human
beings.
o They say there’s only possible of survival of the
fittest.
o Every living organisms has consciousness. It has
super inherent powers .
