Wykład 1: Podstawy Fizyki - Budowa Materii
Piotr Salabura
Contact: piotr.salabura@uj.edu.pl
Location: B-2-66
How is the universe constructed?
Did it have a beginning and will it have an end?
Have these ideas existed forever, or will they remain?
Such questions have intrigued humans since they first gazed upon the star-filled sky.
Vincent van Gogh - "Starry Night Over the Rhône"
Questions about the universe are found in fairy tales, myths, religions, and traditions of all peoples.
These inquiries intensify curiosity and the quest for answers.
A drawing from 1880 illustrates ancient ideas by Anaximenes of Miletus (585 - 525 BC).
Depicts a flat Earth surrounded by a transparent dome where stars, Sun, and Moon are affixed.
The question arises: What lies beyond this?
One wonders about an earth lump, stone, or grain of sand:
Is it composed of something? Or from what does it arise?
(625-545 BC) First physicist- philosopher of nature.
Proposed the question: What is the cosmos made of?
Suggested that all food is moist, and warmth arises from moisture; thus, is everything derived from water?
Anaximander posited the primary substance (infinite) called "apeiron."
He introduced four elements and movement, further elaborated by Empedocles (490 – 430 BC):
Earth, Water, Air, Fire.
Aristotle (384 – 322 BC) added complexity to the understanding of these elements.
Introduced the atomic conception of matter around (460 – 370 BC).
Galaxies: 10² m
Crystals: 10⁹ m
Matter: 10 m
Nucleon: 10-15 m
Atomic nucleus: 10-14 m
Atom: 10-10 m
Electron: 10-18 m
Hydrogen: 2%
Helium: 70%
Heavier Elements: 28%
Immediately after the Big Bang:
Hydrogen: 76%
Helium: 24%
Current Composition: 2% hydrogen, 70% helium, 28% heavier elements.
The Ouroboros, a symbolic snake eating its tail, exemplifies unity of existence in cyclic transformation, never ceasing to exist, but rather perpetually changing.
Understanding the structure of matter and the universe.
Unity of micro and macro worlds, scales, sizes, and interactions.
Energy forms: potential and binding energy.
Chronicles the evolution of understanding matter from Aristotle to Newton.
The Renaissance: Key figures like Leonardo da Vinci, Galileo, Copernicus, Kepler, and the rise of classical physics in the late 19th century.
The implications of wave-particle duality, Heisenberg's uncertainty principle, and the development of atomic theory.
Electromagnetic waves and blackbody radiation.
Delving deeper into quantum mechanics, solutions to quantum problems, and the links between quantum theory and physical phenomena.
Highlighting the works of Becquerel and the Curies on radioactivity and the interaction of radiation with matter.
Yukawa theory concerning the interactions of nucleons and the binding energy aspects of atomic nuclei.
Exploring conductive properties in solids, semiconductors, and various applications of nanotechnology.
Examination of the solar system, observational astronomy, and the scale of the universe.
The dynamics of the universe, critical density, and the observational evidence for cosmic expansion.
Understanding stellar types and the Hertzsprung-Russell diagram along with the formation and evolution of stars.
D. Halliday et al., Podstawy Fizyki 2. H. Haken, Atomy i kwanty 3. R. Eisberg, Fizyka kwantowa 4. H.A. Enge, Wstęp do fizyki atomowej 5. E. Chaisson, Astronomy Today 6. Encyklopedia PWN 7. A.K. Wróblewski, Historia Fizyki
Overview of macro and micro world components and the interactions between them.
Overview of the fundamental forces in physics, such as gravitational, electromagnetic, and strong interactions.
Distinguishing fermions (quarks and leptons) and providing a summary of their properties.
A comparison of the relative strength of fundamental forces in physics and their effective ranges.
Newton's law of universal gravitation presented in vector form, emphasizing gravitational attraction.
Discusses how changes in gravitational constants (G) could affect stellar lifetimes significantly.
Discussing potential energy as it relates to work, energy conservation laws, and gravitational interactions.
Overview of Coulomb's law, depicting forces in electrostatics and energy conservation.
Discusses how negative total mechanical energy denotes bound systems.
Explores the binding energy and mass deficit within nuclear forces and nucleon interactions.
Discussing energy yield in nuclear fission, referencing uranium isotopes.
Examining the relation of mass loss to binding energy in nuclear reactions.
Highlighting the connection between mass deficit and energy releases in fission reactions.
Recognition of significant contributors to the understanding of radiation and nuclear structure.
E = mc² and its implications for binding energies in nuclear physics.
Investigating the practical applications and implications of observed nuclear decay and fission.
Discusses binding energy values and their relevance to nuclear stability.
Examines weak interactions and their significance across various nuclear processes.
A chronology from Aristotle to Newton concerning motion and classical physics.
Aristotle and Isaac Newton and their influence on classical mechanics.
Aristotle’s views on nature underpinning motion, explaining different types of motion.
Clarifying Aristotle's perspective on forces causing movement.
Historical attempts to debunk Aristotelian physics.
Historical observations that challenged Aristotle's beliefs on falling bodies.
Noted figures of Renaissance influencing science through art and literature.
Galileo's establishment of foundational scientific principles that govern motion.
Outline of Galileo's scientific method responsibilities.
Mentioning notable astronomers including Copernicus and Kepler for their contributions to astronomy.
Describing Kepler’s seminal laws governing planetary motion.
Descartes' thoughts on continuous motion unless interrupted by external forces.
Newton's contributions towards developing classical physics.
Discussion on how physics can predict future events based on known laws.
The joint advancements in understanding electric and magnetic phenomena.
Overview of Maxwell’s contributions to electromagnetic theory.
Recognition of Hertz in generating and detecting electromagnetic waves.
Exploring the wave nature of radiation using various phenomena.
Identification of various segments of the wavelength spectrum and their applications.
Depiction of remnants from supernova explosions within astrophysical contexts.
Applications of thermal imaging in astronomical observations.
Examining advancements in observing cosmic phenomena through X-rays.
The role of satellites in observing X-ray emission from celestial objects.
The discussion around light behaving as both wave and particle.
Exploration of diffraction as a property indicating wave behavior.
The concept of interference as significant in wave theory.
Analysis of interference patterns in light demonstrating wave characteristics.
Understanding light as both a wave and particle (photons).
Exploration of theoretical models regarding perfect blackbody radiation.
The law informing about energy radiation through temperature.
Discussion on limitations of classical laws for blackbody radiation.
Applications of thermometry across various cosmic scales.
Highlighting pivotal moments in establishing quantum theory within physics.
Introduction of quantized energy levels through Planck’s hypothesis.
Overview of Planck's law concerning blackbody radiation as a fundamental physics principle.
Accurate measurement of Planck's constant's significance to physics.
Difficulties faced in accurately measuring quantities and interpreting quantum theories.
Analysis of Planck’s contributions and personal challenges amid his work.
Planck’s recognition through the Nobel Prize emphasizing his role in quantum mechanics.
Investigating remnants from the universe's initial formation.
Hertz’s experimental findings connecting electromagnetic waves to electron emissions from metals.
Explaining the relationship between maximum kinetic energy and voltage stop.
Curating influential research leading to the understanding of the photoelectric effect.
Einstein’s pivotal contributions to light quanta theory and the photoelectric effect.
Discussing key experimental results framing the photoelectric effect on metal surfaces.
Deriving critical equations linking energy and frequency within photoelectric phenomena.
Investigating varying work function values for different metals.
The struggles and resistance faced in confirming photon behavior.
The evolving understanding of light in terms of wave-particle duality.
Highlighting accolades awarded to contributors in the realm of quantum mechanics.
Concepts of light as both wave and particle impacting theoretical physics.
Discussing properties of photons derived from light behavior analysis.
Outlining the implications of the Compton effect on quantum mechanics.
Compton’s work bridging theory and empirical evidence in particle physics.
Analyzing the necessity of incorporating both wave and particle theories across physics.
Insights into de Broglie’s groundbreaking ideas concerning particle-wave duality.
Celebrating de Broglie's significant contributions to wave theory in modern physics.
Recognizing empirical strategies confirming particle-wave theories on various scales.
Clarifying the dual nature of matter supported by comprehensive experimental evidence.
Exploring the insights gained from experiment results concerning electron behavior and wave properties.
Summarizing similar experimental findings reinforcing wave-particle duality.
Investigating larger mass particles demonstrating wave-like behavior through interference experiments.
Discussing the social upheaval during scientific advancements, highlighting significant developments in art, music, and science.