RYORAKU vs A Level Physics Practice

RYORAKU is an interactive learning app that brings the invisible world of quantum mechanics to life. Watch particles spread like waves, energy come in discrete steps, and a spin that is decided only when measured. Developer: Fuji Bit Inc. Part of the "RAKU" physics series: see the quantum concepts taught in high school and university as moving pictures, not just formulas. 12 simulations in 3 categories: -- Waves & Particles - Wave function: A Gaussian wave packet moves and spreads, shown as its real part, imaginary part and probability density |ψ|². Change the wave number k, the width σ and the speed to see how a packet follows the Schrödinger equation. - Double slit: Particles reach the screen one at a time, yet interference fringes appear as they pile up. Change the slit spacing, slit width and wavelength and compare the fringes with the theory curve. - Uncertainty principle: Position and momentum distributions side by side. Squeeze the position spread Δx and the momentum spread Δp grows; their product Δx·Δp never drops below ℏ/2. - Quantum tunneling: A wave packet hits a potential barrier, and part of it gets through even when its energy is lower than the barrier. Change the barrier height and width and the particle energy to read the transmission T and reflection R. -- Quantized Energy - Particle in a box: Raise the quantum number n for more nodes and an energy that grows as n², or mix two states and watch the probability slosh back and forth. - Harmonic oscillator: Wave functions built from Hermite polynomials in a parabolic potential. See the evenly spaced levels E_n = ℏω(n+½) and the zero-point energy that stays above zero even at n = 0. - Hydrogen atom: Choose the quantum numbers n, l and m to change the shape of the s, p, d and f electron clouds, the radial probability and the energy E_n = −13.6/n² eV. - Hydrogen spectrum (new): Watch an electron drop from a higher level to a lower one and emit a photon whose wavelength matches the energy gap. Switch between the Lyman (ultraviolet), Balmer (visible) and Paschen (infrared) series to see why hydrogen glows in sharp lines, and why only four Balmer lines are visible. -- Spin & Entanglement - Stern-Gerlach: The historic experiment in which a beam of atoms splits in two in a non-uniform magnetic field. Change the input spin angle θ and the up/down split follows P(↑) = cos²(θ/2). - Entanglement: Alice and Bob measure entangled photon pairs and the correlations are recorded. Change the angles and the degree of entanglement to see quantum entanglement break the classical limit S = 2 of the Bell (CHSH) inequality. - Quantum walk: A quantum walk with a Hadamard coin next to a classical random walk. The quantum walk builds peaks at both edges through interference and spreads in proportion to the number of steps. - Qubit (new): A qubit shown as an arrow on the Bloch sphere. Change the drive strength Ω and the detuning Δ to watch Rabi oscillation as the state turns and the chances of ↑ and ↓ trade places. Press Measure and the state snaps to ↑ or ↓ according to its probability. Features: - Clean, modern design (switch between dark and light themes) - Home screen organized by category - Control panel with tips on what to try and a Play button - Info sheet with formulas and explanations for every simulation - In landscape and on iPad, the canvas and controls sit side by side - Supports larger text sizes - VoiceOver reads out each screen's results (transmission, measurement results and more) - Available in 73 languages, including English and Japanese (follows your device language) - No sign-in; start exploring right away Price and purchases: - Price: Free - In-app purchases: None - Subscriptions: None - Ads: Pangle banner ads at the bottom of the screen

A Level Physics Practice is an educational application designed to help students understand and practice important physics concepts through structured quizzes and mock tests. The app provides topic-wise practice covering mechanics, electricity, waves, optics, thermal physics, modern physics, and electronics. Students can solve conceptual and numerical questions, revise important chapters, and monitor their progress using detailed performance statistics. The app supports systematic learning and regular revision for students preparing for A-Level examinations and other academic assessments. The content is organized into chapters to make learning structured and accessible for both beginners and advanced learners. Topics Included 1. Physical Quantities and Units Physical quantities, SI units, base quantities, derived quantities, dimensional analysis, and measurement errors. 2. Kinematics Distance and displacement, speed and velocity, acceleration, equations of motion, graphs of motion, and projectile motion. 3. Dynamics Forces, Newton’s laws of motion, friction, and momentum concepts. 4. Work, Energy and Power Work done, kinetic energy, potential energy, power, conservation of energy, and efficiency. 5. Circular Motion and Gravitation Circular motion, centripetal force, gravitational force, orbital motion, and escape velocity. 6. Mechanical Properties of Matter Density, elasticity, stress and strain, Young’s modulus, Hooke’s law, and breaking stress. 7. Thermal Physics Temperature, heat transfer, specific heat capacity, latent heat, gas laws, and thermodynamics. 8. Waves Wave types, wave properties, superposition principle, diffraction, interference, reflection, and refraction. 9. Optics Reflection and refraction of light, lenses, mirrors, optical instruments, and total internal reflection. 10. Electricity Electric charge, current, potential difference, resistance, Ohm’s law, and electrical power. 11. Magnetism and Electromagnetism Magnetic fields, electromagnetic induction, Faraday’s law, Lenz’s law, and practical applications. 12. Alternating Currents AC current, RMS values, reactance, impedance, resonance, and transformers. 13. Modern Physics Photoelectric effect, atomic models, Bohr model, radioactivity, nuclear structure, and half-life. 14. Electronics Semiconductors, diodes, transistors, logic gates, rectifiers, and electronic applications. Key Features • Topic-wise physics quizzes • Mock tests for overall assessment • Daily quiz for regular practice • Performance statistics and progress tracking • Structured chapters for systematic study • Simple and distraction-free interface A Level Physics Practice is suitable for students studying physics who want organised practice in mechanics, electricity, optics, waves, thermal physics, and modern physics concepts.