Experience Chemistry vs Relativity Simulator

EXPERIENCE CHEMISTRY is a series of innovative apps designed to motivate students to investigate basic scientific phenomena and concepts in chemistry through simulations and interactive labs. Using an inquiry-based learning approach, the apps challenge students with investigations and quizzes based on the students' explorations of each interactive unit. EXPERIENCE CHEMISTRY PROVIDES APPS WITH: • Dynamic simulations of scientific phenomena and concepts, such as states of matter, floating and density, dissolving sugar or salt in water, diffusion rate, the Law of Conservation of Mass, and the structure of the atom; • Multiple representations, such as dynamic graphs, tables, and interactive animations; • Investigations that help students learn by exploring inquiry questions; • Thought-provoking quizzes that are ideal for individual learning, small-group work, and teacher-led class instruction; • Scientific background of the relevant concepts introduced in each unit. EXPERIENCE CHEMISTRY UNITS ARE: CHANGES IN THE STATE OF MATTER invites students to observe the various changes that occur when water is heated and transitions from ice to liquid to gas. Floating and Density invites students to place cubes of different materials in water tanks and understand what causes them to float or sink. DISSOLUTION invites students to observe a microscopic view of how salt and sugar dissolve in water. Effect of Temperature on Diffusion Rate invites students to remove the barrier between two parts of a vessel, each containing a different substance, and measure the resulting diffusion rate at different temperatures. THE LAW OF CONSERVATION OF MASS invites students to compare the weights of the reactants and products of different chemical reactions in order to test the Law of Conservation of Matter. The reactions can be conducted in open or closed vessels. The Structure of the Atom invites students to construct specific atoms and ions in a partial Periodic Table of Elements by choosing the correct number of protons and electrons for each.

Relativity Simulator is an interactive relativity toolkit built strictly on the axiomatic foundations of modern physics. There is no "hard sci-fi" here — every result traces back to the Lorentz transformation of special relativity or the Einstein field equations of general relativity, and is verified against numerical truth fixtures. 【Real physics, not imagination】 · 20 interactive modules covering core effects from special relativity to black holes, gravitational waves, and curved spacetime; · Each module ships with precise charts, adjustable parameters, and a "Theory Card" with a fully visible derivation chain; · All demo numbers are recomputed locally on your device from real CODATA constants — nothing is fabricated. 【Phenomena you can verify yourself】 · Gravitational time dilation: why clocks run faster up high — ~80 ns/day faster atop Everest, ~38 µs/day faster on GPS satellites; · Twin paradox: fly to 4.22 light-years at 0.8c and the Earth twin ages 10.5 years while the traveler ages only 6.3; · Tidal disruption: why you get stretched into "spaghetti" falling into a black hole — small holes tear you outside the horizon, supermassive ones only after you cross it; · Plus light bending, gravitational lensing, the Schwarzschild horizon, frame dragging, and mass–energy equivalence E=mc². 【Built for learning and teaching】 · Volume-based progression: kinematics → gravitational field → black holes → cosmology → applications; · Bilingual (zh/en) system notes ship with every effect: derivation, physical quantities, and references; · Chinese / English UI follows your system language. 【Privacy first】 The app collects, stores, and transmits no personal data, embeds no third-party SDKs, and runs every computation locally on your device. Whether you are studying, teaching, or simply curious, Relativity Simulator lets you actually run the "invisible spacetime" and watch it.