Physics

A.Y. 2022/2023
6
Max ECTS
60
Overall hours
SSD
FIS/07
Language
Italian
Learning objectives
The course is intended:
- To present the basis of the scientific method, with examples and discussions applied to Physics topics.
- To provide a fundamental knowledge on Classical Dynamics, Thermodynamics, Fluids Mechanics, Surface properties, Electromagnetism, Geometrical Optics, with examples and applications to Medical and Dentistry contexts. The course foresees also discussion and application of the methods used to solve simple exercises.
- To present and discuss the physical basis of the main diagnostic methods used in Medicine and Dentistry (RX, TAC, Ecography, NMR, etc.).
Expected learning outcomes
The student will learn the basis of Classical Dynamics, Thermodynamics, Fluids Mechanics, Surface properties, Electromagnetism, Geometrical Optics, with specific examples and applications to Medical and Dentistry contexts. The acquired methodological and scientific knowledge will result useful in following studies, as for example in Physiology, when studying the Mechanics of Mastication or Mechanical Properties of Materials used in Dentistry, etc.
Single course

This course cannot be attended as a single course. Please check our list of single courses to find the ones available for enrolment.

Course syllabus and organization

Single session

Course syllabus
The experimental method.

Measurement process and errors, systems of measurement units. Significant digits.

Material point and material points systems mechanics.

Reference system and coordinate system. Definition of a material point. Law of motion. Average and instant speed. Uniform rectilinear motion. Average and instant acceleration. Rectilinear motion evenly accelerated. Concepts of force and mass. Principles of classical dynamics. Examples of forces: gravitational, electrical, elastic force. Gravity acceleration; motion of a mass under gravity in two dimensions. Weight and gravity. Motion on curved trajectory: displacement and angular velocity, acceleration and centripetal force; examples of the motions of planets, satellites and electrons. Energy, work and power: definitions and examples. Potential and kinetic energy. Kinetic energy theorem. Mechanical energy conservation theorem. Friction and energy conservation in the presence of dissipative forces. Center of mass and its properties. Momentum, angular momentum and equations that govern their evolution over time (1st and 2nd Cardinal Equations). The equilibrium conditions. The levers. Examples of the application of the lever model to the study of joints in the human body. Elasticity: stress and deformation.

Fluid systems properties.

General information. Microscopic model for the various states of matter. Chaotic motion and drift speed. Density, viscosity and internal friction, compressibility. Pressure and devices to its absolute and relative measurement. Pascal principle and its applications. Stevino's Law. Communicating vessels. Hydrostatic force, Archimedes law and applications. Laminate and turbulent motion. Continuity equation and its consequences. Bernoulli's theorem and its applications. Torricelli's theorem. Poiseuille equation and its application to blood circulation. Reynolds' number. Vacuum and thrust pumps: the heart as a pump for circulation. Measurement of blood pressure. Centrifuge pump. Surface tension and examples. Laplace laws. Capillarity and adherence.

Thermodynamics.

Intensive and extensive variables. Operational temperature definition; Kelvin, Celsius and Fahrenheit scales. Thermodynamic equilibrium. Isolated, open and closed system. Possible channels for energy exchange. Equation of state and Cartesian representation of thermodynamic state. Transformations. Reversible and irreversible processes. The phase diagram of the perfect gas and of the homogeneous real gas. Relationship between kinetic energy and temperature. Distribution of molecular speeds. Internal energy of a perfect gas and a real gas. Internal energy as a state function. Thermodynamic work. Conducting and thermal insulating materials. The heat; thermal capacity and specific heat. Big and small calories and relationship with the Joule. First principle of thermodynamics and energy conservation. Thermal machines and performance; Steam car and Carnot's machine. Statements of the second principle of thermodynamics and their discussion. Heat transmission. Thermoregulation of the human body (nods). Thermodynamic potentials. Elements of Intensive and extensive variables. Operational temperature definition; Kelvin, Celsius and Fahrenheit scales. Thermodynamic balance. Isolated, open and closed system. Possible channels for energy exchange. Equation of state and Cartesian representation of thermodynamic state. Transformations. Reversible and irreversible processes. The phase diagram of the perfect gas and homogeneous real gas. Relationship between kinetic energy and temperature. Distribution of molecular speeds. Internal energy of a perfect gas and a real gas. Internal energy as a state function. Thermodynamic work. Conducting and thermal insulating materials. The heat; thermal capacity and specific heat. Big and small calories and relationship with Joule. First principle of thermodynamics and energy conservation. Thermal machines and performance; steam machine and Carnot's machine. Statements of the second principle of thermodynamics and their discussion. Heat transmission. Thermoregulation of the human body (nods). Thermodynamic potentials.

Elements of electromagnetism.

Notions of the microscopic structure of matter. Attractive and repulsive electrical actions; positive and negative electric charges. Stability of the nucleus and atom. Insulating materials and electrical conductors. Electrostatic induction. The electric charge and the law of its conservation. Coulomb's law. Comparison of electrical and gravitational force. Principle of overlapping effects. Definition of electric field; force lines of the field. Electrostatic field conservative. Electrical potential and potential energy. Capacity and capacitors. Capacitor with dielectric. Electrical forces in molecular biology. Conductors and electrical current; current intensity. Electro-driving force. Ohmic conduction and electrical resistance. Overview of electrical conduction in the nervous system.
Magnetic effects due to moving charges. Magnetic induction field B and Lorentz strength. Biot and Savart's Law. Ampère's equivalence principle. Atomic currents and magnetism in matter. Electromagnetic induction: phenomenology, application examples and Faraday-Neumann-Lenz equation. The alternating current. Electromagnetic waves (e.m.): generation and main properties. Spectrum of the e.m. waves. Corpuscular appearance of the e.m. radiation.
Need for a new physics for the study of the microscopic properties of matter (nods). The cathode ray tube: features and examples (TV and computer screens, the oscilloscope).

Geometrical optics.

Reflection and refraction of light. Snell's Law. Total internal reflection and optical fibers. Thin lenses and the lens equation.

Elements of Wave Optics.

Undulating nature of light. Huygens principle and diffraction. Experiments with single and double slit. Diffraction grating. The spectrometer and its applications. Interferometers. Polarization. Light diffusion from the atmosphere. X radiation: nature and production. Interaction with matter. Attenuation processes. X-ray technique.

Optical tools.

Magnifying lens and microscope. The human eye. Aberrations. X-rays and tomography (CT scans).

Elements of Radioactivity and Nuclear Energy.

Stable isotopes. Alpha, beta and gamma radiation and natural radioactivity. Law of radioactive decay and measurements of radioactivity. Nuclear reactions and transmutation of elements. Nuclear fusion and fission. Effects and uses of nuclear energy: radiation damage, radiotherapy, emission tomography, nuclear magnetic resonance imaging (MRI).
Prerequisites for admission
Analytical geometry, Definition and main properties of sine, cosine, tangent functions. Vectors: properties and operations, scalar product, unit vectors, components.
Teaching methods
The teaching includes face-to-face lessons and exercises, possibly carried out in small groups with the teacher's guidance. All teaching materials used for teaching (slides for face lessons and for tutorials, texts and solutions of exam tasks) is available on the Ariel website, usually before the corresponding discussion.
Teaching Resources
D. C. Giancoli Fisica Casa Editrice Ambrosiana
F. Scannicchio Fisica biomedica EdiSES, Napoli
Assessment methods and Criteria
The final exam consists of a written test and an oral test, which the student enters with a grade normally no less than 15/30 obtained in the written test. The written test consists of exercises to be solved numerically and sometimes questions of theory. The assessment, which takes into account the correctness of the result obtained and - where possible - the solution method chosen by the student, is expressed in thirtieths. Only calculators are allowed during the written test. The results of the written test are communicated on the Ariel website and discussed with the interested students.
FIS/07 - APPLIED PHYSICS - University credits: 6
Lessons: 60 hours
Professor: Magli Renato
Educational website(s)