This document provides information about an introductory physics course, including contact information for the instructor and a link to the course website. It then summarizes key topics and developments in the history of physics, from ancient Greek philosophers to modern quantum mechanics and string theory. Major figures discussed include Galileo, Newton, Maxwell, Einstein, Bohr, Feynman, and Gell-Mann. The document traces the development of theories like classical mechanics, electromagnetism, relativity, quantum mechanics, and the Standard Model.
This is the presentation given by Mr. Anmol Kandel on "AYN Friday Sharing" program on 05-Aug-2016. The presentation about The Superstring Theory was very well received by the audiences present there at Agronomy Seminar Hall, AFU. These slides are for all the people who could not attend the program. Enjoy!
Origin of the Universe and the Solar SystemNikoPatawaran
The most widely accepted theory of planetary formation, known as the nebular hypothesis, maintains that 4.6 billion years ago, the Solar System formed from the gravitational collapse of a giant molecular cloud which was light years across.
This is the presentation given by Mr. Anmol Kandel on "AYN Friday Sharing" program on 05-Aug-2016. The presentation about The Superstring Theory was very well received by the audiences present there at Agronomy Seminar Hall, AFU. These slides are for all the people who could not attend the program. Enjoy!
Origin of the Universe and the Solar SystemNikoPatawaran
The most widely accepted theory of planetary formation, known as the nebular hypothesis, maintains that 4.6 billion years ago, the Solar System formed from the gravitational collapse of a giant molecular cloud which was light years across.
a lesson in grade 11 earth and life sciences. it also discuses the nature of science defining law, theory, hypothesis and the first competency which is the Big Bang theory, its evidences and other theories on the origin of the universe such as the steady state theory and creationism.
Nuclear physithese slides are related to the introduction of nuclear physics some contents is given which are related to the discovery of nucleus. The history of atoms etc
.arth-science-origin-of-the-earth (2).pptx
The four main ERAS are, from oldest to youngest: PreCambrian, Palaeozoic, Mesozoic and Cenozoic. Periods are a finer subdivision in the geological time scale.
This is a powerpoint presentation that discusses about one of the Senior High School Core Subject: Earth and Life Science. It is composed of the definition of universe, and some of the theories of the origin of the Universe.
Man i m just tired of this bullshit....i m sitting here for like almost 5 hours and doing this fucking batshit....uploading these shites after downloading it from a different websites......but hell no.....its requirements are like my dick.....its just didnt doing me no favors.fuck this damn world....!
a lesson in grade 11 earth and life sciences. it also discuses the nature of science defining law, theory, hypothesis and the first competency which is the Big Bang theory, its evidences and other theories on the origin of the universe such as the steady state theory and creationism.
Nuclear physithese slides are related to the introduction of nuclear physics some contents is given which are related to the discovery of nucleus. The history of atoms etc
.arth-science-origin-of-the-earth (2).pptx
The four main ERAS are, from oldest to youngest: PreCambrian, Palaeozoic, Mesozoic and Cenozoic. Periods are a finer subdivision in the geological time scale.
This is a powerpoint presentation that discusses about one of the Senior High School Core Subject: Earth and Life Science. It is composed of the definition of universe, and some of the theories of the origin of the Universe.
Man i m just tired of this bullshit....i m sitting here for like almost 5 hours and doing this fucking batshit....uploading these shites after downloading it from a different websites......but hell no.....its requirements are like my dick.....its just didnt doing me no favors.fuck this damn world....!
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
I will finally argue that deep variability is both the problem and solution of frictionless reproducibility, calling the software science community to develop new methods and tools to manage variability and foster reproducibility in software systems.
Exposé invité Journées Nationales du GDR GPL 2024
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
Toxic effects of heavy metals : Lead and Arsenicsanjana502982
Heavy metals are naturally occuring metallic chemical elements that have relatively high density, and are toxic at even low concentrations. All toxic metals are termed as heavy metals irrespective of their atomic mass and density, eg. arsenic, lead, mercury, cadmium, thallium, chromium, etc.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The system’s unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
Nucleic Acid-its structural and functional complexity.
Lecture1F1020.pdf
1. COURSE MODULE INFORMATION
• Dr Rick Goulding
C3004
rgoulding@mun.ca
864-6111
Course WEB PAGE: www.physics.mun.ca/~rgoulding/index.html
Here you will find course notes and other material.
3. A gun mounted on a moving traincar….
A Typical Physics Problem
4. History of Physics
•The Greeks
•Cultivated the study of “Natural Philosophy”
•Aristotle(384-322 BC)
•Student of Plato
•observation of physical phenomena Physical Laws
•Wrote first Physics book Aristotle’s Physics
•Believed earth was center of solar system (geocentric)
•Knew earth was a sphere (Eratosthenes 276-194BC)
•Aristarchus proposed sun centered (heliocentric) model of solar
system
•Archimedes made many contributions in fluids and mechanics
•Ptolemy wrote many scientific “papers” which became basis for later
advancement
•Greeks developed scientific method
•Most of Greek work was lost. Some was salvaged through Islamic
philosphers who reinterpreted the Greek in the context of their
religion.
5. Galileo Galilei-The Rise of Physics and mathematics
•Knowledge was dominated by Law, medicine and theology
•Galileo studied Copernicus and felt that math was the key to
understanding the motion of the planets.
•Discovered moons of Jupitor in 1609 (First telescope?)->big job-
>publications
• Dialogue Concerning the Two Chief Worlld Systems-> house
arrest
•Galileo started new focus on experimentation-> start of a new
age in science
Descartes-believed that motion was due to objects following the influence of
corpuscles. Planetary motion was caused by vortex motion of corpuscles in space.
Decartes did not believe that a vacuum could exist.
6. Isaac Newton-The Big Picture
http://en.wikipedia.org/wiki/Isaac_Newton
•4 January 1643 – 31 March 1727
•Built first practical refracting telescope
•Developed a theory of colour, emperical law of cooling
• Co-inventor of Calculus and Generalized Binomial Theorem
•Published Principia 1687
•Laid groundwork for classical mechanics
•Law of Universal Gravitation
•Newton’s Three law’s of Motion
•Showed Kepler’s laws came from law of Universal
Gravitation
•Saw the Big Picture!!
•Principia dominated science for next three centuries!!
I saw the cresent. You saw the Whole of the Moon-The Waterboys
7. The Middle Years 1750-1900
•Calculus and mathematical analysis applied to many problems
•Mid 1800’s , theories of the energy of physics were developed.
These theories made physicists rethink how the physical world
worked.
•James Clerk Maxwell (June 1831 –Nov 1879) led the way with
his Kinetic Theory of gases and his theory of electromagnetic
radiation
•Showed EM radiation, light and magnetic fields were all
products of the electromagnetic field-> second great
unification!
•These two discoveries laid down the groundwork for
“Modern Physics” which was just around the corner!
•Maxwell is considered to be as great a scientist as Newton and
Einstein!
8. Physics in 1900
The problems:
1.Blackbody Radiation
2.Photoelectric Effect
3.Certain types of radioactivity could not be explained
4.An ether around the earth through which EM radiation was
postulated to travel could not be found.
9. Einstein and Quantum Mechanics
1. Special Theory of Relativity which gave mass-energy
equivalence(E=mc2)
2. Postulated that light could be a particle which was
quantized(E=hf). This was a revolutionary idea!
• Neils Bohr used this idea to explain the hydrogen
atom and the light frequencies emitted by hydrogen
gas. This was the beginning of Quantum Mechanics.
• This explained the Photoelectric Effect
3. Einstein’s General Theory of Relativity showed that the
force of gravity and motion in an accelerating frame are
indistinguishable.
Homework: Look at THIS VIDEO
11. Quantum Mechanics-The Roaring 20’s
1. Bohr’s idea was expanded to full scale theory in 1920’s.
2. Debroglie(1925)( showed that light could behave as a
wave(particle-wave duality)
3. Heisenberg’s Uncertainty Principle (1927)showed that for
very small things you can measure momentum or position
but not both.
4. Paul Dirac produced relativistic quantum theory in 1928
5. Theories got more complicated but couldn’t quite fit
known results.
6. Einstein did not like the probabilistic nature of quantum
mechanics and said “I do not believe that God plays
dice?”
12. What happened next….
•Quantum mechanics evolved and cumulated
•in the late 1940s in the quantum electrodynamics (QED) of Richard
Feyman,Freeman Dyson, Julian Schwinger and Si-ItiroTomonaga.
Feynman, Schwinger and Tomonaga received the 1965 Nobel Prize in
Physics. QED, a quantum theory of electrons, positrons, and the
electromagnetic field, was the first satisfactory quantum description of a
physical field and of the creation and annihilation of quantum particles. It
was called Theory of everything!
•Particle physics evolved. Key features were the existance of short lived
virtual particles governed by the Uncertainty Principle. Particles from
nothing!
•Feyman was one of the great minds of science
•http://en.wikipedia.org/wiki/Richard_Feynman
•Feynman explaining Atoms
•The Pleasure Of Finding Things Out(Part1)
•The Pleasure Of Finding Things Out(Part2))
13. What keeps protons in nucleus together? Repulsive force is very
strong!
•Yukawa predicted existence of a powerful but short range
force carried by a particle called a Pion whose size was bigger
than an electron but smaller than a proton. Pion was
discovered in 1947 as were many particles such as the neutron
and positron.
•Particle accelerators built to search for new particles
Stanford Linear Accelerator
•Murray Gell-Mann and Zweig proposed that protons, neutrons
were composed of smaller particles called quarks. It is
impossible to see a free quark!
•
14.
15. •Standard Model-Quantum Chromodynamics
•The Standard Model was finalized in the
1970’s which tied together all forces except
for gravity.
•Particle accelerators have confirmed most parts of this model
•A theory called string theory holds promise to bring gravity
into the fold. This theory requires strings of size much smaller
than anything we know and 11 dimensions! These strings
vibrate
•
16. Strings become Membranes
•These "strings" vibrate in multiple dimensions,
and depending on how they vibrate, they might
be seen in 3-dimensional space as matter, light,
or gravity. It is the vibration of the string which determines
whether it appears to be matter or energy, and every form of
matter or energy is the result of the vibration of strings.
•Five string theories by late 80’s
•M-theory incorporated all 5 string theories. Looks like a very
good theory.
•