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Clear filtersConcept section
Microscopes →
Teaching section in Magnifiers, telescopes, microscopes and focal measurements. Trace the intermediate image, define the viewing condition and connect optical models to a bench experiment.
Concept section
Molecular mean free path →
Teaching section in Gases: state variables, molecular speeds and collisions. Connect pressure and temperature to particle motion, then distinguish collision distance from collision time.
Concept section
Molecular rms speed →
Teaching section in Gases: state variables, molecular speeds and collisions. Connect pressure and temperature to particle motion, then distinguish collision distance from collision time.
Concept section
Molecular speed distribution →
Teaching section in Gases: state variables, molecular speeds and collisions. Connect pressure and temperature to particle motion, then distinguish collision distance from collision time.
Concept section
Moment of inertia →
Teaching section in Torque, rotational inertia and fixed-axis dynamics. Derive the axis-dependent quantities that connect turning forces to angular motion.
Concept section
Motion of the center of mass →
Teaching section in Impulse, momentum and collisions. Choose the system and interval, then connect momentum exchange to centre-of-mass motion and impact outcomes.
Concept section
Motional EMF →
Teaching section in Induction, moving conductors and magnetic energy. Follow the changing flux, establish the sign, and close the energy account.
Concept section
Newton’s law of cooling →
Teaching section in Heat balances, conduction and cooling. Track energy through mixing and phase changes, then distinguish steady heat flow from a changing temperature.
Concept section
Nuclear fission →
Teaching section in Nuclear size, binding and reaction energy. Balance the particles, match the mass convention and include recoil in the energy account.
Concept section
Nuclear fusion →
Teaching section in Nuclear size, binding and reaction energy. Balance the particles, match the mass convention and include recoil in the energy account.
Concept section
Nuclear size →
Teaching section in Nuclear size, binding and reaction energy. Balance the particles, match the mass convention and include recoil in the energy account.
Concept section
Ohm law →
Teaching section in Kirchhoff networks and current direction. Read the connections, solve a shared voltage and audit the energy.
Concept section
Open and closed pipes →
Teaching section in Standing waves, pipe modes and resonance measurements. Use boundary conditions to find nodes, harmonics and the information hidden in resonance spacings.
Concept section
Optical resolution →
Teaching section in Gratings, spectra and resolving detail. Separate where a peak appears from how narrowly it can distinguish two signals.
Concept section
Parallel-axis theorem →
Teaching section in Torque, rotational inertia and fixed-axis dynamics. Derive the axis-dependent quantities that connect turning forces to angular motion.
Concept section
Path difference →
Teaching section in Interference: phase, brightness and contrast. Predict what a detector reads by connecting path, phase and field addition.
Concept section
Perpendicular-axis theorem →
Teaching section in Torque, rotational inertia and fixed-axis dynamics. Derive the axis-dependent quantities that connect turning forces to angular motion.
Concept section
Phase changes →
Teaching section in Heat balances, conduction and cooling. Track energy through mixing and phase changes, then distinguish steady heat flow from a changing temperature.
Concept section
Photon energy and momentum →
Teaching section in Photons, photoelectric emission and matter waves. Separate energy per event from event rate, then connect particle momentum to wavelength.
Concept section
Physical pendulum →
Teaching section in Oscillations: restoring forces, phase and energy. Build spring and pendulum models from equilibrium, then connect their motion to energy and initial conditions.