Unit Gacha ! vs NETURAKU

◆ Learn Physics Units with a Fun Gacha System Physics Units Gacha lets you practice unit breakdown, unit conversions, and fundamental physical quantities through randomly generated problems. Just tap to get a new question and continue learning at your own pace. ◆ Covers Essential Physics Units Practice and review a wide range of physics units: Mechanics (force, energy, momentum, pressure) Electricity & magnetism (voltage, resistance, charge, field strength) Waves & thermodynamics Derived units SI base units & physical constants Designed for students who want to study physics through units. ◆ Focused Explanations Where Needed Some problems include short explanations that show how units are derived from formulas. ◆ Random Practice Questions are generated randomly, allowing you to encounter various unit patterns and practice repeatedly. ◆ Simple Learning Features In-app scratch paper Learning progress is saved locally, and can be synchronized to the cloud when you sign in. Suitable for both quick review and focused practice sessions. ◆ For High-School Physics & Introductory University Courses A learning app designed to support the study of physics units for exams and fundamental review. ◆ Free to Use (Optional Paid Content) Approximately 70 problems are available for free Additional problem sets are available as optional paid upgrades

NETURAKU is an interactive educational simulation app for experiencing thermodynamics phenomena hands-on. The 5th app in the RAKU series following SUUGAKU (math), BUTURAKU (physics), DENRAKU (electricity), and HARAKU (waves). This time, the theme is heat. Learn and enjoy the wonders of heat and the depth of physical laws through 10 simulations. [10 Simulations] 1. Particle Motion (Ideal Gas) Observe particle motion in real time based on temperature. Change volume and temperature to measure pressure from wall collisions and experience the ideal gas law (PV = nRT). 2. Heat Conduction Simulate heat diffusion using a 2D finite difference method. Adjust heat source temperatures and thermal conductivity to observe temperature distribution changes based on Fourier's law in real time. 3. Phase Transition Matter changes state between solid, liquid, and gas as temperature varies. Intuitively experience the differences in particle behavior from lattice vibrations to free motion. Visually understand the concepts of melting and boiling points. 4. Carnot Cycle Follow the 4 processes - isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression - on a PV diagram. Visualize the efficiency of an ideal heat engine (eta = 1 - T_L/T_H). 5. Entropy Simulate the mixing process of two types of gas separated by a partition. When the partition is removed, observe entropy increasing in real time on a graph. 6. Thermal Radiation (Blackbody Radiation) Visualize the blackbody radiation spectrum (Planck distribution) in real time based on temperature. As temperature changes, the peak wavelength shifts (Wien's displacement law) and radiant energy is proportional to the fourth power of temperature (Stefan-Boltzmann law). 7. Speed Distribution (Maxwell-Boltzmann) View the speed distribution of gas particles as a histogram alongside the theoretical curve. As temperature rises, watch the distribution broaden and its peak shift to the right. Build intuition for the most probable, mean, and root-mean-square speeds. 8. Brownian Motion Visualize a large particle (pollen grain) undergoing irregular motion as it is buffeted by countless invisible smaller molecules. The path is drawn in real time, revealing the random-walk trajectory and how temperature and molecule count affect the motion. 9. Cooling Law (Newton's Law of Cooling) Simulate how a hot object cools at a rate proportional to its temperature difference with the surroundings. Adjust the cooling coefficient, initial temperature, and ambient temperature to watch the exponential decay curve on the temperature-time graph approach equilibrium. 10. Diffusion (Fick's Law) Simulate how a concentration imbalance, like a drop of ink, spreads from high to low until it becomes uniform. Tap to add ink and watch the center cross-section profile flatten (peak lowering and widening toward a uniform state). [Features] - Adjust parameters in real time across all simulations - Real-time display of physics formulas and numerical values - Dark mode / Light mode support - Clean home screen organized by category - Intuitive and beautiful UI - Only a banner ad at the bottom of the home screen - No in-app purchases or subscriptions [Recommended For] - Students studying thermodynamics or statistical mechanics in physics class - Anyone who wants to intuitively understand the properties of heat - Teachers looking for educational tools - Everyone interested in thermodynamics and statistical physics