Manabi LabNew and updated appshttps://sishiya.github.io/manabi-lab/feed-en.xml2026-10-12T00:00:00+09:00ShishiyaHow Pitches Breakhttps://sishiya.github.io/manabi-lab/pitch-physics/?lang=en2026-10-12T00:00:00+09:002026-10-12T00:00:00+09:00A tech demo that solves a pitch's path by computing gravity, air drag and the spin force every millisecond from its speed, direction and spin. See why a four-seam fastball “drops less” and why nobody can predict a knuckleball.Light’s Path Inside the Eyehttps://sishiya.github.io/manabi-lab/eye-optics/?lang=en2026-10-12T00:00:00+09:002026-10-12T00:00:00+09:00Follow light as the cornea and lens bend it into an image on the retina, ray by ray, with a model of a real eye. See how long focusing and the pupil take to catch up, how the eye gets used to the dark over 30 minutes, and presbyopia, nearsightedness, astigmatism and glasses, all from measured values.How Hair Removal Workshttps://sishiya.github.io/manabi-lab/hair-removal/?lang=en2026-10-12T00:00:00+09:002026-10-12T00:00:00+09:00Use a razor, tweezers or a home light-based hair removal device on a row of hair follicles whenever you like, and watch over time what happens inside. Hairs grow, shrink and rest in cycles, and the light only damages the roots of hairs that are growing.The Virus That Infects Bacteriahttps://sishiya.github.io/manabi-lab/phage/?lang=en2026-10-11T00:00:00+09:002026-10-12T00:00:00+09:00How a T4 phage infects E. coli, multiplies to over 100 inside it, and bursts out. Zoom anywhere from the human body down to single molecules along one time slider, and hover for explanations.Hands at the Pianohttps://sishiya.github.io/manabi-lab/piano-hand/?lang=en2026-10-10T00:00:00+09:002026-10-11T00:00:00+09:00Two 3D hands play the falling notes. A test prototype that works out which finger presses each key from the music, and checks whether a human hand could really move that way. Compare with textbook fingering, or open MIDI and MusicXML scores.Body Divehttps://sishiya.github.io/manabi-lab/body-dive/?lang=en2026-10-03T00:00:00+09:002026-10-11T00:00:00+09:00Go in through the mouth, nose or anus and travel through the digestive tract and airways in 3D.What a Black Hole Looks Likehttps://sishiya.github.io/manabi-lab/black-hole/?lang=en2026-10-08T00:00:00+09:002026-10-10T00:00:00+09:00The black hole from the movie “Interstellar”, drawn by tracing light through curved spacetime point by point. Click to see where that light came from.Inside the Pupahttps://sishiya.github.io/manabi-lab/metamorphosis/?lang=en2026-10-06T00:00:00+09:002026-10-10T00:00:00+09:00Inside the body as a caterpillar becomes a pupa and then a moth. Follow which organs break down, stay or are newly built, day by day from tobacco hornworm research.Seeing Airflow at Homehttps://sishiya.github.io/manabi-lab/air-flow/?lang=en2026-10-06T00:00:00+09:002026-10-10T00:00:00+09:00See how windows, vents, fans and the wind outside change the air in a home, and where it gets stale, colored by the “age of air”.Evolution Sandboxhttps://sishiya.github.io/manabi-lab/ga-creatures/?lang=en2026-10-06T00:00:00+09:002026-10-10T00:00:00+09:00Evolve creatures made of joints and muscles with a genetic algorithm. Flat ground, slopes, ice, the Moon and water each give rise to different bodies and ways of moving.How Mold Growshttps://sishiya.github.io/manabi-lab/mold-growth/?lang=en2026-10-06T00:00:00+09:002026-10-10T00:00:00+09:00A “mold garden” on a magnified bathroom wall. Spores sprout and spread by growing threads called hyphae. Try water, grime, mold remover and anti-mold agents with your finger to find out how to keep it away.God’s-Eye Maphttps://sishiya.github.io/manabi-lab/god-view/?lang=en2026-10-05T00:00:00+09:002026-10-10T00:00:00+09:00A 3D Earth with real terrain, aerial photos, buildings and moving trains and buses. Zoom out to the edge of the universe or in to atoms and particles, all with one wheel.Quantum Labhttps://sishiya.github.io/manabi-lab/quantum/?lang=en2026-10-04T00:00:00+09:002026-10-10T00:00:00+09:00The double slit, tunneling, polarizers, entanglement and the uncertainty principle.Seeing WiFi at Homehttps://sishiya.github.io/manabi-lab/wifi-wave/?lang=en2026-10-04T00:00:00+09:002026-10-10T00:00:00+09:00See how WiFi signals travel through a home, with an electromagnetic wave simulation.How Animals Sense the Worldhttps://sishiya.github.io/manabi-lab/animal-senses/?lang=en2026-10-04T00:00:00+09:002026-10-10T00:00:00+09:00See the same garden through the senses of a human, a crow, a pit viper and more. Ultraviolet light and heat are turned into colors you can see.The Immune Battlehttps://sishiya.github.io/manabi-lab/immune-battle/?lang=en2026-10-04T00:00:00+09:002026-10-10T00:00:00+09:00Viruses and bacteria get in, multiply and are cleared by the immune system. Watch it in a microscopic cross-section and graphs.4.6 Billion Years to Ushttps://sishiya.github.io/manabi-lab/evolution/?lang=en2026-10-03T00:00:00+09:002026-10-10T00:00:00+09:00Watch one place from the sky and follow 4.6 billion years of Earth, life and humankind in 3D.