EXPLORE BY TOUCHING STRUCTURE
Dawn · Intermediate · 5 chaptersTuring Machine
Follow the Turing machine from abstract computation to mechanisms, mechanical demonstrations, universal machines, and limits of computability.
5 chapters · 104minDawn · Advanced · 4 chaptersLarge Language Models
Follow the Turing machine from abstract computation to mechanisms, mechanical demonstrations, universal machines, and limits of computability.
4 chapters · 92min
Dawn · Intermediate · 20minHow the Enigma Cipher Machine Works
Trace how a key press passes through the plugboard, rotors, reflector, and lampboard to become another letter.
4 hotspots · 2 quiz
Dawn · Beginner · 20minHeart and Circulation: Four Chambers Moving Blood
Explore atria, ventricles, valves, pulmonary circulation, and systemic circulation with a diagrammatic 3D model.
5 hotspots · 3 quiz
Dawn · Intermediate · 22minDaguerreotype Camera: Fixing Light onto a Silver Plate
Explore the 1839 Giroux daguerreotype camera through focus, cap exposure, silver-plate results, and mercury safety.
5 hotspots · 3 quiz
Dawn · Intermediate · 24minRoman Aqueducts: Invisible Infrastructure for a City
Explore source water, gradients, channels, settling tanks, baths, fountains, and sewers as one urban system.
5 hotspots · 3 quiz
Dawn · Beginner · 18minSolar System Gravity Lab
Experiment with speed, distance, and mass to feel why planets keep falling around the Sun.
3 hotspots · 4 quiz
Dawn · Beginner · 17minVolcano: From Magma Chamber to Eruption
Explore underground magma, gases, fractures, and pathways to the surface as a cutaway system.
4 hotspots · 3 quizStella · Intermediate · 21minPlate Tectonics
Explore how Earth surface plates move, subduct, form ridges, and gather earthquakes and volcanoes at their boundaries.
3 hotspots · 2 quiz
Dawn · Beginner · 24minDNA Replication: Unzipping the Double Helix
Explore how enzymes unzip, prime, extend, ligate, and repair DNA at the replication fork.
5 hotspots · 4 quiz
Stella · Intermediate · 20minSynapse: Where Memory Forms
Follow one signal as it enters a neuron, becomes a spike, crosses a synapse, and strengthens a pathway into memory.
5 hotspots · 5 quiz
Stella · Intermediate · 20minPhotosynthesis: Turning Light into Sugar
Explore how light energy becomes chemical energy inside chloroplasts.
3 hotspots · 5 quizDawn · Beginner · 18minElectric Grid: From Power Plants to Homes
Explore power plants, substations, transmission lines, and shifting demand as one network.
3 hotspots · 2 quiz
Dawn · Beginner · 18minPacket Journey / パケットの旅
Explore how one message becomes packets and travels through DNS, NAT, firewalls, TCP/UDP/QUIC, HTTPS, CDN, and HTTP responses.
10 hotspots · 5 quiz
Stella · Advanced · 24minTokamak: The Magnetic Sun
Explore how a tokamak holds a small sun of plasma inside a donut-shaped magnetic cage.
4 hotspots · 4 quizDawn · Intermediate · 19minAstrolabe: A Tool for Measuring the Sky
Explore the classical observing instrument that translates star positions, time, and latitude.
3 hotspots · 2 quiz
Dawn · Advanced · 28minStarship Systems Lab
Explore a 123-meter-class reusable transport system through scale, structure, flight phases, refilling, HLS operations, and failure modes.
5 hotspots · 3 quiz
Stella · Beginner · 18minSteam Engine: When Heat Becomes Motion
Explore how fire turns water into steam, steam becomes pressure, and pressure moves pistons, rods, and iron wheels.
3 hotspots · 3 quiz
Stella · Advanced · 25minBlack Hole Observation Lab
Read a black hole as a shadow shaped by bent light, using the accretion disk, photon ring, and gravitational lensing as the first clues.
4 hotspots · 4 quiz