In 1922, Niels Bohr won the Nobel Prize for
Physics. He won it “for his services in the investigation of the structure of
atoms and of the radiation emanating from them.” Naturally then, his Nobel Lecture,
which he delivered on December 11, 1922, discussed the field of physics to
which his work belonged. His lecture was titled “The structure of the atom.” He
therefore spoke about the structure of the atom and how he had been able to
modify the planetary model of Ernest Rutherford to account for the hydrogen
spectrum. By doing this, he had become the first to apply the quantum concept,
which restricts the energy of a system to certain discrete values, to the
problem of atomic and molecular structure.
Indications of New Physics in
European Organisation (CERN)
Science
Coaching India explore
the NEWS pertain to physics indications of new physics
in CERN. The LHCb experiment in European organisation for nuclear research
(CERN) has shown a feeble but persistent sign of physics that contradicts a
basic assumption of the Standard Model of particle physics, indicating that
this theory which has ruled the roost may not be complete in itself. Experts
feel that this is a very big discovery.At the subatomic level, there are two types of processes that have been
compared by the physicists at LHCb. One is the decay of what is called a B
meson into an excited K meson and a pair of muons (muon-plus and muon-minus).
The other is where the B meson decays into K meson giving an electron-positron
pair.According to the standard model, since the muons
and electrons are identical except for their masses, the rates of these two
reactions should be the same. However, the carefully done experiment finds the
rates are quite different. The researchers have taken care to factor out all
the experimental error possibilities.
There
are lot of students who decide to pursue their further studies in
science field. They many opt for engineering or medical stream.
However, to be successful in any of the streams, it is very important
that students have good understanding about the fundamental concepts
of the subjects.
Some
schools appoint good and learned faculty or teachers to teach
students. Such teachers work really hard to make sure that each
student has grasped the concept well. However, not all the
educational institutes lay that much emphasis on hiring qualified and
learned teaching staff. In such scenarios, students should join
science coaching classes at very initial stage itself.
It
is suggested that student joins science coaching as early as possible
so that he/she gets adequate time to understand, learn and improve
his/her skills. It requires lots of practice to understand the
concepts of science. Therefore, it will be beneficial for students if
they get adequate time to practice.
Science
coaching classes emphasize on teaching the fundamental concepts in
the best possible way. They hire highly qualified faculties to teach
students. They also conduct assessments on regular basis which are
helpful in tracking the students
Science Coaching India explore, how can Talent
Search Examinations help Students ?
The Strategy for Talent Search:
Ambitious
XII Appeared / Pass Students, generally have reasonable
understanding of most concepts but they do not have perfection in applying
these concepts to solve examination-based problems. Even among extremely well
prepared & deserving Students, a large percentage fail due to lack of
proper Examination Temperament.
This will help
them to know what they can achieve & how they came bridge the gap between
their desire and aspiration. Based on their answers, Students will get
suggestions to plug loopholes to perform to their optimum.
Preparing well
for a particular Examination is one thing
and transforming the knowledge & skills into success on the Examination day
is another. Many Students are not able to adopt the right approach and proper
examination temperament as they do not have the right feedback on their
preparation.
This strategy help students to analyze & realize
causes of failure in Examination and provide opportunity to learn from the
experience of the successful Students and teach you how not to fail in Examination.
This strategy will also boost your
motivation & help you choose the right study material, books & provide
assistance for preparation. If you take this seriously, you will learn what you
need to do to succeed & get a good Rank in Examination.
PSLV
all set to ferry 31 satellites on January 12 by Cartosat-2F aimed at surveillance
will be main payload. Among the world’s favourite and reliable commercial
launchers for small satellites, the upcoming 42nd PSLV will carry a total of 31
satellites including 28 paid riders. The main payload, the 710-kg Cartosat-2F, is the seventh
in the Cartosat-2 series and is built to work for five years. ISRO is putting up two of its own small satellites — a 100 kg
micro satellite and the 11-kg nano satellite INS-1C. There are also 28 smaller
customers.The commercial satellites include three 100-kg class micro satellites
and 25 nanosats (1-10 kg) from Canada, Finland, France, Korea the U.K. and the
U.S.The PSLV has so far launched 209 small and medium satellites for foreign
countries and earned revenue for the commercial arm, Antrix Corporation Ltd.
ISRO will be trying a two-orbit feat with the PSLV for the second time. On
Friday, just after 17 minutes from take-off, the main satellite will be
released first into a 505-km orbit, followed by 29 others. Almost 1.5 hours
later, microsat will be released into a lower 359 km orbit. Between the two
orbits, the engine in the fourth stage of the rocket will be re-started twice
during the course. The flight lasting 2 hours and 21 minutes will be the
longest of the PSLV, about six minutes longer than C-35 which was launched in
September 2016.
Science Coaching India finds from news pertain to solid chemistry in reference to Journal Science that Scientists have developed carbon nanotubes (CNT) over 50,000 times thinner than a human hair. These CNT can separate salt from seawater and may help solve the global water crisis. Increasing demands for fresh water pose a global threat to sustainable development, resulting in water scarcity for four billion people, researchers said. Current water purification technologies can benefit from the development of membranes with specialised pores that mimic highly efficient and water selective biological proteins. The nanotubes, hollow structures made of carbon atoms in a unique arrangement and are more than 50,000 times thinner than a human hair. The super smooth inner surface of the nanotube is responsible for their remarkably high water permeability, while the tiny pore size blocks larger salt ions. The narrow hydrophobic channel forces water to trans locate in a single-file arrangement, a phenomenon similar to that found in the most efficient biological water transporters. Computer simulations and experimental studies of water transport through CNTs with diameters larger than one nanometre showed enhanced water flow, but did not match the transport efficiency of biological proteins and did not separate salt efficiently, especially at higher salinities.
