Physics' Assimilation and Purpose:
For novices, educators and students of
high-school, sixth-form, baccalaureate, and fresh-year physics
who crave deeper assimilation of the subject's foundations and deployment
2nd edition, 6 April 2026, Calluna Publishing, with answers
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This is a diligently constructed course companion and authoritative reference that features:
►Holism, best practice, inspiration of the subject’s greats, and logical development from the start.
►The accessibility of a uniquely simple, concise, margin-noted structure.
►Detailed foundation to data, waves, Newtonian motion, energy, electricity, and magnetism.
►Contemporary applied physics of semiconductors, communication, medical diagnostics, astronomy, and cosmology.
►Introduction to the supportive concepts of thermodynamics, equilibrium, relativity, atoms, and quanta.
►Tantalising overtures to analogy, philosophy, duality, paradox, physicality of time, and theory of everything.
►Connections to the wider sciences.
►Questioning of assimilative readiness via multiple choices.
►Full external referencing, hooks to advanced topics, and revealing of probable future trends.
Copyright ⓒ 2025. All rights reserved.
Philip Henderson:
A chartered/teaching physicist - with connections to Calluna Resources, EMMAY Associates, and Linkedin - whose experience spans professorship at Forman Christian College Lahore, specialism in lasers and fibre-optic instrumentation, and posdoctorates at the Universities of Liverpool, Sydney, and Kent.
Preface, Introduction, Scientific Method, Content, and 1st-Edition Answers:
(answers are included in Calluna Publishing's second - and subsequent - editions)
Preface:
Starting small, but seeking profound enlightenment, this book expounds the methodology and usage of the physical revelation of Nature. For physicists of up to first-year undergraduacy, and with interests spanning experiment, theory, and the liberal arts, the book acts as an explanatory companion to the handling of data, and other topics ranging from mechanics, waves, and electricity to the exotica of photonics, healthcare, and the stars. With an accessible style that includes margin notes, examples, and multiple-choice questions, the content is holistic throughout, occasionally mathematical, and fully referenced to help instil best practice, thought, and understanding. And, with a profusion of guidelines, applications, and tips, as well as pointers on active areas of research, the curious may be eased deeper into the subject.
Introduction:
Regardless of our awareness, we exist within a universe whose evolving structure continuously yields to our destiny. Physics, however, allows us to take control. Rooted upon perception of Nature, and with origins in a miscellany of disparate disciplines – that include philosophy, mathematics, religion, and intuition – physics has come to elucidate the interactions of matter ranging from subatomic entities to the largest bodies in space; and inter alia has eased applications of motion, and the practising of communication, medicine, and astronomy. At the heart of physics is a fundamental inter-connective methodology that unlocks the simplicity, symmetry, and beauty of Nature. Indeed, the grail of many physicists is the establishment of a unified and comprehensive explicative theory. Although far from complete, our present discourses on particles, energy, and physical interactions include the conceptual unification of electricity and magnetism by Maxwell (1865), and major strides towards understanding mass and gravitation by Newton (1687) and Einstein (1916). Nonetheless, advances in physics require a cautionary approach. Time, for example, has been debated since antiquity yet, in physics, is merely a descriptor of change – after all, without change, physical systems would not age, there would be no clocks, and the concept of time would have no meaning. So, whilst we are concerned with the physics of Nature, we must remain acutely aware of the nature of physics. Whereas such physics is but a representation of Nature, its practice contributes to the growth of knowledge accelerated by both innate human desire and rigorous scientific doctrine. With the latter having origins in experimental principles established by al‑Haytham (c.1016), first modern investigative procedure formulated by Bacon (1620), consolidative works by Galileo (1638), and deeper philosophy of Newton (1687), successful physicists follow a maturing tradition known as the scientific method:
Scientific Method:
Scrutiny: Since antiquity, the curious have sought to make sense of the universe. Postulates are propounded. Concepts are originated.
Measurements and records: Empiricists observe and measure. Data are recorded. Manual and electronic techniques are used for visualisation. A good sketch or graph can, indeed, paint a thousand words.
Theory: Theoreticians engage the language of mathematics to predict outcomes, and explain recorded data.
Establishment of physical laws, and growth of knowledge: Empiricism and theory are used to test postulates and concepts. Substantiation increases our knowledge of Nature, whilst the establishment of physical laws provides a universal, timeless predictive power that is often juxtaposed by the brevity of a simple formula and concise description.
Dissemination: Scientific works are communicated to the wider community through the principal languages of English and mathematics. Good publication requires novel works packaged as a balanced mixture of text, formulae, and diagrams.
New scrutiny, review, and acceptance of change: New topics are continuously identified and advanced through the same scientific method, whilst existing ones are subjected to confirmation or refutation. Scientists must be eager to renew their understanding in the light of new information.
Contents:
In accordance with the Scientific Method's best practice, and organised by chapter, the text's fundamental topics include:
#1: Handling of data.
#2: Description of motion.
#3: Cause of motion.
#4: Mechanisms on the propagation of energy.
#5: Mechanisms and unification of physical interaction.
#6: Physics of electronics and photonics.
#7: Nature of space and time.
And contemporary applications include:
#4: Ultrasound based diagnostic medicine.
#5: Magnetic-resonance based diagnostic medicine.
#6: Semiconductors, communication, and electromagnetic based diagnostic medicine.
#7: Astronomy, and cosmology.
Chapter #1 headings:
Data
Magnitude and subsumed unit
Spatial direction; vectors versus scalars
SI system of units
Scientific notation
Order of magnitude
SI standards
Conversion and derivation of units
Significant figures
Decimal places and rounding
Concepts of error and exactness
Error in measurement
Error in calculation, and danger of rounding
Data acquisition, presentation, and analysis
Chapter #2 headings:
Particles, Kinematics, and Mass
Particles
Kinematic states
Kinematic vectors
Kinematic scalars
Rotation
Harmonic motion
Simple harmonic motion, and the pendulum
Mass and other constraints to motion
Centre of mass
Chapter #3 headings:
Newtonian Force; Momentum and Energy
Newtonian physics
Newton's first law
Newton's second law, and particle-like bodies
Newton's third law
Importance of the inertial frame
Free-body diagrams
Examples of Newtonian forces
Momentum and its conservation
The nature, conservation, and equilibrium of energy
Approach to analysing energy
Conversion/conservation of energy within systems
Changes of total system energy; effect of external work done
Power
Chapter #4 headings:
Energetic Propagation
Thermodynamics
Temperature, heat, and thermal equilibrium
Thermal conduction
Radiated heat
Convection
Flow
Introduction to fluids
Analysis of ideal fluids
Waves
What and where is a wave?
Features and equation of a wave
Wave strength, and propagative loss
Wavefronts, Huygens, and diffraction
Superposition and interference
Mechanical waves
Electromagnetic waves
Mechanical versus electromagnetic waves
Chapter #5 headings:
Interactions and Unification
Gravitation
Kepler's rejection of geo- and helio-centricity
Newton's universal gravitation
Potential energy
Escape speed
Beyond Newton
Electricity
Charge, atoms, and ions
Coulomb's electrostatics
Electric equilibrium, energy, and voltage
Electrons as cathode rays
Electric field, and the Faraday cage
Response of charge to an electric field
Magnetism
Atoms as magnetic media
Electric currents as magnetic media
Magnetic field
Response of current to a static magnetic field
Response of charge to a changing magnetic field
Electromagnetic unification
Weak interaction
Strong interaction
Final unification
Chapter #6 headings:
Electronics and Photonics
Electric conduction
Electric current
Electrical supply
Circuits, polarity, and batteries
Electric energy and power
Circuit componentry and Ohm/Kirchhoff based analysis
Electrical measurement
Blackbodies
Photoelectric effect; photonic energy, detection, and counting
Semiconductors
Communication
Electromagnetic emissions used in medicine
Chapter #7 headings:
Space and Time
Nature of space
Principles of astronomy
Sensitivity, and its atmospheric seeing
Resolution, and its atmospheric seeing
Mosaic mirrors, and active optics
Adaptive optics for diffraction-limited imaging
Aperture synthesis for increased imaging resolution
Stellar mass
Stellar surface temperature
Stellar surface composition
Stellar birth, evolution, and death
The Hertzsprung-Russell diagram
Fusing of hydrogen, and first red giant
Fusing of helium, and second red giant
Death of light stars
Death of heavy stars
Nature of time
Eternity and the universe
1st-Edition Answers:
Chapter 1:
1Q1 a
1Q2 b
1Q3 d
1Q4 b
1Q5 a
1Q6 c
1Q7 a
1Q8 b
1Q9 d
1Q10 b
1Q11 c
1Q12 b
1Q13 b
1Q14 c
1Q15 d
1Q16 d
1Q17 d
1Q18 d
1Q19 c
1Q20 d
1Q21 c
1Q22 c
1Q23 a
Chapter 2:
2Q1 c
2Q2 d
2Q3 b
2Q4 b
2Q5 b
2Q6 b
2Q7 b
2Q8 b
2Q9 d
2Q10 c
2Q11 a
2Q12 b
2Q13 b
2Q14 d
2Q15 b
2Q16 a
2Q17 a
2Q18 b
2Q19 d
2Q20 b
Chapter 3:
3Q1 a
3Q2 d
3Q3 b
3Q4 b
3Q5 d
3Q6 d
3Q7 c
3Q8 c
3Q9 c
3Q10 b
3Q11 b
3Q12 c
3Q13 b
3Q14 b
3Q15 b
3Q16 a
3Q17 b
3Q18 b ... 'mass not change' to be read as 'mass does not change'
3Q19 a
3Q20 c
Chapter 4:
4Q1 d
4Q2 d
4Q3 b
4Q4 c
4Q5 c
4Q6 c
4Q7 d
4Q8 a
4Q9 c
4Q10 a
4Q11 d
4Q12 d
4Q13 b ... 'a local a' to be read as 'a local'
4Q14 d ... 'has having' to be read as 'as having'
4Q15 d
4Q16 d
4Q17 b
4Q18 c
4Q19 d
4Q20 d
4Q21 a
4Q22 c
4Q23 d
4Q24 c
4Q25 a ... 'in an air-filled' to be read as 'an air-filled'
4Q26 d
4Q27 d
4Q28 b
4Q29 b
4Q30 d
4Q31 b
4Q32 c
4Q33 c
4Q34 b
4Q35 c
4Q36 b
4Q37 d
4Q38 b
4Q39 c
4Q40 d
4Q41 b
4Q42 d
Chapter 5:
5Q1 d
5Q2 b
5Q3 a
5Q4 d
5Q5 c
5Q6 d
5Q7 d
5Q8 c
5Q9 d
5Q10 c
5Q11 b
5Q12 d
5Q13 b
5Q14 a
5Q15 c
5Q16 c
5Q17 b
5Q18 b
5Q19 b
5Q20 c
5Q21 c
5Q22 a
5Q23 d
5Q24 b
5Q25 c
5Q26 c
5Q27 b
5Q28 a
5Q29 c
Chapter 6:
6Q1 a
6Q2 d
6Q3 a
6Q4 d
6Q5 c
6Q6 d
6Q7 a
6Q8 c
6Q9 b
6Q10 c
6Q11 d
6Q12 b
6Q13 c
6Q14 b
6Q15 c
6Q16 c
6Q17 c
6Q18 a
6Q19 d
6Q20 c
6Q21 darkness
6Q22 d
6Q23 c
6Q24 c
6Q25 a
6Q26 c
6Q27 b
6Q28 d
6Q29 c
6Q30 d
6Q31 b
6Q32 d
6Q33 b
6Q34 b
6Q35 c
6Q36 d
6Q37 c
6Q38 c
6Q39 a ... 'toxic' to be read as 'of high toxicity'
6Q40 a
6Q41 b
6Q42 a
6Q43 c
6Q44 b
Chapter 7:
7Q1 a
7Q2 a
7Q3 a
7Q4 d
7Q5 d
7Q6 d
7Q7 c
7Q8 c
7Q9 c
7Q10 c
7Q11 b
7Q12 c
7Q13 c
7Q14 b
7Q15 c
7Q16 a
7Q17 c
7Q18 b
7Q19 a
7Q20 c
7Q21 a
7Q22 c
7Q23 c
7Q24 c
7Q25 c
7Q26 a
7Q27 b
7Q28 c
7Q29 c
7Q30 b
7Q31 d
7Q32 a
7Q33 d
7Q34 a
