Description Chapter 1: Traditional Science in Food, Clothing, and Shelter Salt made by boiling seawater - Jayeom (boiled salt)…12 Food salted and fermented - Jeotgal (salted seafood)…14 Food made by coagulating protein - Tofu…16 Ingredient flavored by cultivating microorganisms - Meju (fermented soybean block)…18 Fermentation starter added to brew good alcohol - Nuruk…20 Kimchi aged using underground temperature - Gimjang (kimchi-making)…22 Natural preservative that emits phytoncides - Pine needles…24 Food rich in vitamins and minerals - Dried greens…26 Pot that raises pressure to cook fluffy rice - Cast iron cauldron (Gamasot)…28 Steamer that cooks rice cakes with steam - Siru (steamer)…30 Pottery that breathes through pores - Onggi (earthenware)…32 Bowl that cools slowly due to poor heat conduction - Ttukbaegi (earthenware pot)…34 Bowl made by mixing copper and tin - Yugi (brassware)…36 Tool that presses bean juice using friction - Millstone (Maetdol)…38 Mold that increases rice cake density for chewiness - Tteoksal (rice cake mold)…40 House using wood's contraction and expansion - Gulpi house (bark-roofed house)…42 Device that heats a house by conducting heat - Ondol (underfloor heating)…44 Facility that filters impurities with charcoal and gravel - Well…46 Storehouse that blocks heat transfer to keep ice - Seokbinggo (ice storage)…48 Dyeing method that prevents skin disease and creates beautiful color - Indigo dyeing…50 Clothing that traps air to increase warmth - Nubiot (quilted clothing)…52 Alkaline solution that cleans clothes - Lye water (Jaenmul)…54 Beating clothes to smooth wrinkles - Dadeumijil (fabric beating)…56 Raincoat made from water-repellent plants - Dorongi (straw raincoat)…58 Overshoes that lower pressure to prevent sinking in snow - Seolpi (snow shoes)…60 Chapter 2: Traditional Science in Tools and Weapons Tools that start fire with friction heat - Nulbibi and Hwalbibi (fire drills)…64 Device that filters dirt from water - Multchaengi (water filter)…66 Natural fertilizer that enriches soil - Compost (Georeum)…68 Tool that changes motion direction to thresh grain - Dorigae (flail)…70 Filtering device using differences in grain size - Sieve…72 Tool that separates chaff by weight difference - Winnowing basket (Ki)…74 Tool that grinds grain using water's potential energy - Water mill (Mullebanga)…76 Tool that removes husks using friction - Maetong (husking tool)…78 Tool that reduces friction to move heavy loads - Ox sled…80 Tool that uses center of gravity to carry loads - Jige (A-frame carrier)…82 Tool using buoyancy for gathering - Taewak (diving float)…84 Tool that quickly spins thread - Spinning wheel (Mullae)…86 Traditional glue with no toxic components - Natural adhesive…88 Natural lacquer that prevents wood from rotting - Ott (lacquer)…90 Paint made by mixing soot and glue - Ink stick (Meok)…92 Vessel that lights using capillary action - Oil lamp (Deungjan)…94 Summer items with good heat conduction - Jukbuin (bamboo wife) and bamboo mat…96 Communication facility that reports enemy invasions - Beacon tower (Bongsudae)…98 Essential material for gunpowder explosion - Saltpeter (Yeomcho)…100 Joseon's rocket using the principle of action and reaction - Singijeon…102 Bow made from highly elastic material - Gakgung (horn bow)…104 Ship that increased buoyancy to float on water - Turtle Ship (Geobukseon)…106 Machine using pulleys to move stones - Geojunggi (crane)…108 Folk game using air resistance - Jegichagi (shuttlecock kicking)…110 Folk game using rotational force - Top spinning (Paengichigi)…112 Folk game using the lever principle - Neolttwigi (seesaw jumping)…114 Kite with a wind hole that withstands strong winds - Bangpaeyeon (shield kite)…116 Folk game using pendulum motion - Swinging (Geunetwigi)…118 Chapter 3: Traditional Science in Cultural Heritage Tomb using the lever principle and inclined plane principle - Dolmen (Goindol)…122 Cultural heritage created by Goguryeo craftsmanship - Goguryeo tomb murals…124 Bell sound that grows and fades through the beat phenomenon - King Seongdeok Divine Bell…126 Temple designed to prevent condensation - Seokguram Grotto…128 Building constructed to store the Tripitaka - Haeinsa Janggyeong Panjeon…130 Banquet site where cups floated on water - Poseokjeong…132 Porcelain with a subtle jade-blue color - Goryeo Celadon…134 Instrument that creates resonance - Geomungo…136 Traditional paper with excellent preservation - Hanji…138 World's first metal-type printed book - Jikji Simche Yojeol…140 Script with scientific and systematic structure - Hunminjeongeum…142 Joseon's encyclopedia of fish - Jasaneobo…144 World's first disease prevention method - Donguibogam…146 Medicine that uses different remedies based on body type - Sasang Constitutional Medicine…148 Chapter 4: Traditional Science That Studied Sky and Earth Seasons divided according to the sun's position - The 24 Solar Terms…152 The oldest observatory in the East - Cheomseongdae…154 The Goguryeo people's view of the universe...