PHYSICS NOTES
Entry 03: Wednesday, 13 September
Meet up with Eric and Priyanka at Bliss Cafe, 6:00PM
Address: ...
Purpose: study activity
Bring: books, notebooks, laptop, stationary
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Module: WAVES
Topic: Electromagnetic waves
Key concepts:
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Electromagnetic waves consist of oscillating electric (E) and magnetic (B) fields.
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E and B fields are perpendicular to each other and to the direction of wave propagation.
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Travel at the speed of light: c = 3.00 × 108?m/s
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Applications:
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Radio Waves: Long wavelengths used for communication.
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Visible Light: Human eyes perceive within 400–700 nm range.
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X-Rays: Short wavelengths for medical imaging.
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Communication: Radio, television, and satellite transmissions.
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Medicine: X-rays and laser treatments.
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Astronomy: Study of cosmic radiation, visible light, and radio waves.
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Everyday Use: Infrared in remote controls, microwaves in cooking, ultraviolet in sterilization.
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Maxwell''s Contributions:
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Unified electricity and magnetism into a single theory.
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Predicted the existence of electromagnetic waves.
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Showed that light is an electromagnetic wave.
This book was originally published on Royal Road. Check it out there for the real experience.
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Note: Eric is not very committed to work => not a very ideal partner to work with.
Why:
- Lazy
- Always complaining
- Flirts with everybody; touched a waitress''s rump (?)
- Gone after 20 minutes into studying => sign of non-commitment.
- Gone with a girl in the English department => not loyal to major
- Priyanka''s possible infatuation with the guy???
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PHYSICS NOTES
Entry 04: Monday, 18 September
Feedback on assignment:
- Impressive investigation.
- It reflects an excellent understanding of the physics underlying the production of sound in musical instruments.
- The breakdown of sound production, resonance, and material importance for both instruments is exceptionally well-explained.
- The collection of data, particularly the harmonic frequencies and physical measurements, is clear and well-documented. The use of theoretical validation strengthens findings.
- Structured logically, conclusions are supported by both experimental data and theoretical research.
Improvement:
- Include diagrams or graphs to illustrate the relationship between frequency, wavelength, and harmonic overtones. Visual representations could make analysis even more impactful.
- Could be enriched by discussing how external factors (e.g., temperature, humidity, or material aging) might influence sound production.
- A brief comparison with another type of string or wind instrument (e.g., a cello or a clarinet) could offer further depth to your study.
Overall marks: A-
Percentage:
- Hannah Sparrows: 100% (acc. to Eric)
- Eric Gloria: 95% (acc, to Hannah)
Why:
- Turned in past deadline
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MODULE: WAVES
Topic: Electromagnetic waves
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EM waves carry energy and momentum. The amount of energy depends on the wave''s frequency and intensity.
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Polarization: EM waves can be polarized, meaning the direction of the electric field oscillation can be constrained to a specific plane.
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Electromagnetic waves are generated when electric charges accelerate. For instance:
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In antennas, alternating currents create radio waves.
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In atoms, electrons transitioning between energy levels emit visible light or other EM waves.
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James Clerk Maxwell unified the concepts of electricity and magnetism into a single theoretical framework. His equations predict the existence of EM waves and describe their behavior. These equations show that changing electric fields generate magnetic fields, and vice versa, resulting in self-sustaining EM waves.
...
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PHYSICS NOTES
Entry 05: Tuesday, 19 September
Meet with Eric at his house.
Address: ...
Purpose: Hangout because of low percentage score
Bring: snacks.