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Applied physics engineering Lec 1.1.pptx
- 1. Applied Physics PHM181 Dr. Zeeshan (Lecturer ) Department of Physics and Computer Science DAYALBAGH EDUCATIONAL INSTITUTE
- 2. “ When youcan measure what you are speaking about, and express it in numbers, you know something about it.” Lord Kelvin Physical quantities Control
- 3. Fundamental Physical Quantities 1.Length (m) 🗸
- 4. Fundamental Physical Quantities 1.Length (m) 🗸 2. Mass (kg) 🗸
- 5. Fundamental Physical Quantities 1.Length (m) 🗸 2. Mass (kg) 🗸 3. Time (s) 🗸
- 6. Fundamental Physical Quantities 1.Length (m) 🗸 2. Mass (kg) 🗸 3. Time (s) 🗸
- 7. Fundamental Physical Quantities 1.Length (m) 🗸 2. Mass (kg) 🗸 3. Time (s) 🗸 4. Electric Current (A) 🗸
- 8. Fundamental Physical Quantities 1.Length (m) 🗸 2. Mass (kg) 🗸 3. Time (s) 🗸 4. Electric Current (A) 🗸 5. Temperature (K) 🗸
- 9. Fundamental Physical Quantities 1.Length (m) 🗸 2. Mass (kg) 🗸 3. Time (s) 🗸 4. Electric Current (A) 🗸 5. Temperature (K) 🗸 6. Luminous Intensity (Cd) 🗸
- 10. Fundamental Physical Quantities 1.Length (m) 🗸 2. Mass (kg) 🗸 3. Time (s) 🗸 4. Electric Current (A) 🗸 5. Temperature (K) 🗸 6. Luminous Intensity (Cd) 🗸 7. Amount of Substance (Mole) 🗸 🗸 12.0 g 24.3 g 63.5 g Carbo n Magnes ium Copp er No. of Particles 6.02 ✕ 1023
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- 12. Syllabus 5 Electromagnetic Theory 6Lasers & Fiber Optics 1 Wave Motion 4 Polarisation 2 Interference 3 Diffraction
- 13. Prerequisite Target Audience Physics at10+2 Level. Undergraduate students of Science and Engineering stream. Diploma and Polytechnic students. Students preparing for NET/GATE exams. Physics admirers who wish to brush up the concepts.
- 14. UNIT 1: WAVEMOTION One dimensional waves, harmonic waves, phase and phase velocity, the superposition principle, the complex representation, phasors and the addition of waves, plane waves, the addition of waves of the same frequency, the addition of waves of different frequency. Acoustics: sound waves, intensity of sound waves, decibels and Weber-Fechner law; characteristics of a musical sound versus noise.
- 15. UNIT 2: ELECTROMAGNETICTHEORY Basic laws of electromagnetic theory – Maxwell’s equations, electromagnetic waves, energy and momentum in electromagnetic waves, the electromagnetic- photon spectrum, Rayleigh scattering, reflection, refraction, Fermat's principle, total internal reflection
- 16. UNIT 3: INTERFERENCEAND DIFFRACTION Conditions for interference, Wavefront-splitting interferometers, amplitude-splitting interferometers, types and localization of interference fringes, Fraunhofer diffraction, Fresnel diffraction.
- 17. UNIT 4: POLARIZATION Thenature of polarized light, polarizers, dichroism, birefringence, scattering and polarization, polarization by reflection, retarders, circular polarizers, polarizations of polychromatic light, optical activity.
- 18. UNIT 5: LASERAND FIBER OPTICS Radiant energy and matter in equilibrium, Stefan-Boltzmann law, Wien displacement law, Planck’s radiation law, the Einstein A and B coefficients, Ruby laser, Helium-neon laser, semiconductor laser, fiber optics, numerical aperture, types of fiber, fiber optic communication.
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- 20. What is light? “Islight a wave phenomenon or a particle phenomenon?”
- 21. Particle ● The essentialfeature of a particle is its localization; ● It exists in a well-defined, “small” region of space. ● Practically, we tend to take something familiar like a ball or a pebble and shrink it down in imagination until it becomes vanishingly small. Wave The essential feature of a wave is its non-localization. A classical traveling wave is a self-sustaining disturbance of a medium, which moves through space transporting energy and momentum.
- 22. Traveling Waves ● Travelingwave is a self-sustaining disturbance of the medium through which it propagates ● The most familiar waves, and the easiest to visualize are the mechanical waves. For example, waves on strings, surface waves on liquids, sound waves in the air, and compression waves in both solids and fluids.
- 23. Longitudinal and TransverseWaves Sound waves are longitudinal—the medium is displaced in the direction of motion of the wave. Waves on a string (and electromagnetic waves) are transverse—the medium is displaced in a direction perpendicular to that of the motion of the wave. ……… NOTE: In all cases, although the energy-carrying disturbance advances through the medium, the individual participating atoms remain in the vicinity of their equilibrium positions: the disturbance advances, not the material medium.
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- 25. What about waterwaves and Earthquakes? Transverse / Longitudinal????? https://www.acs.psu.edu/drussell/Demos/waves/wavemotion.html
- 26. What about waterwaves and Earthquakes? Transverse / Longitudinal????? https://www.acs.psu.edu/drussell/Demos/waves/wavemotion.html
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- 30. Ph.D. in Physicsfrom DEI, Agra and Michigan State University, USA Masters of Physics (Director's Medal) with specialization in Electronics & B.Sc. Physics Honors (Director's Medal) from Dayalbagh Educational Institute, Agra Research interests : Electronics, Bio-sensing, Plasma and Microwave physics. Research Publications: 6 Journals, 12 Conferences, 2 Patents Professional Achievements: UGC-NET (Electronic Science)-2017, 2018, 2019, 2020, 2021 UGC-NET (JRF)-2020, 2021 GATE-(Electronics and Communication Engineering)-2019 Fellowships Selected for- JRF in DST-INSPIRE, DRDO and UGC. E-Mail: Teaching Assignments Even Semester: • Applied Physics-II • Electronics-II • Electronics Lab Odd Semester: • Applied Physics-I • Network Theory • Microcontrollers Know Your Instructor……. Dr. Zeeshan, Lecturer Dept. Of Physics & Comp Sci. Faculty of Science
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