Topics: soil morphology, hydric soils, soil colour, soil horizon boundary, micro-morphology, field morphology, soil profile, iron reduction, sandy soils, soil colours, sand separates, clay separates, soil texture

Topics: Electromagnetic field, electromagnetic waves, Cartesian coordinate variables, cylindrical coordinates variables, coulomb law, Gauss law, flux density, electric field intensity

Topics: Fields communication, waves communication, input impedance, reflection coefficient angle, reflection coefficient, smith chart, series inductors, network topology, complex impedance, rectangular waveguide

Topics: rice, yam, groundnut, bean, tobacco, cassava, sorghum, cocoyam, wheat, pest, disease

Topics: biot-savart's law, vector analysis, Coulomb's law, Maxwell's euation

Topics: coulombs law, maxwell's equation, current loops, wave equation, Gauss law, electric flux

Topics: Machines electromagnets, electromagnetic relay, doubly excited magnetic field system, coupling field reaction, singly excited magnetic field system, electromechanical energy conversion, coil self inductance

Topics: Measurement, scalar quantities, dimensions, vector quantities, linear motion, projectiles, Circular motion, simple harmonic motion, gravitational field, mass, weight, vectors, equilibrium of forces, work, energy, power, friction, viscosity, surface tension, simple machine, elasticity, Hooke's law, Young's modulus, Density, upthrust, Archimedes principle, flotation, pressure, Pascal's principle, temperature, heat, thermal expansion, Kinetic theory, Gas laws, Heat quantity, heat capacity, latent heat, vapors, heat transfer, waves, wave production, wave propagation, wave characteristics, sound waves, light energy, reflection, optical instrument, vision, light dispersion, electromagnetic spectrum, electrostatics, electric field, capacitors, current electricity, electrical energy, electrical power, Magnetic field, electromagnetic induction, electricity conduction, atomic physics, radioactivity, electronics, simple AC circuit

Topics: pathogen, disease, control, mycelium, bacteria, morphology, fungi, organism

Topics: Limnology, lentic aquatic ecosystem, lotic aquatic ecosystem, lake morphology, lake morphometry, dimictic lakes, meromictic lakes, holomictic lakes, polymictic lakes