EditorialFigura sequente, ea divisa est in 24 partes aequales, diei & noctis horas 24, Classification of the rotation around the North Star in 24 hours and 12 months, Fig. 17, p. 45, Apian, Peter (del.), 1533, Petrus Apian: Horoscopion Apiani generale dignoscen...
EditorialFesselscher rotation apparatus, Rotary machine by Friedrich Fessel, Fig. 2, p. 5, 1857, Franz Heinen: ?ber einige Rotations-Apparate, insbesondere den Fessel'schen. Braunschweig: Druck und Verlag von Friedrich Vieweg und Sohn, 1857.
EditorialModel of a Life-Saving Cart for Shipwrecks, Rescue device for rescue operations in the event of shipwreck on a beach. It is a two-wheeled car with the wheels in the middle, the wheels have seven double spokes, around which blades are mounted, which can...
EditorialModel of a Windsail, Model of a cooling sail with weather vane. The upper part consists of three rotating hoops covered with cloth and with a weather vane on top and an opening for the air to enter. A piece of lead serves as a counterweight to the wind...
EditorialModel of a Double Capstan, Model of a double capstan in a wooden frame with three levels. The upper drum is for ten wind trees with ten spindle lamps, the lower one for eight wind trees with eight spindle lamps, two catches in the floor prevent the upp...
EditorialModel of a Double Pair or Hydraulic Forge Bellows, Model of a double hydraulic bellows on a floorboard. It consists of two vessels and a drive mechanism that is incomplete. Each vessel has a cylinder inside that connects top and bottom, the space insid...
EditorialRotary Pump, Rotation pump on the suction-and-push principle, consisting of a cylindrical drum with a supply and output pipe and a crank. Inside the drum is not cylindrical but heart-shaped. A large cylinder in the middle touches the inner wall where t...
EditorialModel of a Life-Saving Cart for Shipwrecks, Rescue device for rescue operations in the event of a shipwreck on a beach. It is a two-wheeled car with the wheels in the middle, the wheels have seven double spokes, around which blades are mounted, which c...
EditorialKant's cosmogony as in his Essay on the retardation of the rotation of the earth and his Natural history and theory of the heavens, with introd., appendices, and a portrait of Thomas Wright of Durham. Edited and translated by W. Hastie : Kant, Immanuel...
EditorialModel of a Capstan, Model of a capstan in a two-level wooden frame. It is a capstan for eight wind trees and has no catches to prevent it from falling back. The wooden king extends to the lower level. The drum is completely round, the molars do not pro...
EditorialModel of a Capstan, Model of a capstan on a wooden floor. It is a capstan for eight wind trees and has four catches in the heel against walking back, just like other capstans, these catches can be set in two positions, one for each direction of rotatio...
EditorialModel of an 8-Pounder Gun and Two Carriages, Model of an 8-pound gun on a horse, incomplete. The 35 cm long barrel has a caliber of 17 mm, a refraction ring, the grape is flat from behind. The inscriptions are engraved on the barrel, along with two cro...
EditorialEmblem: year, In the middle a palm tree (symbol for the annual rotation) with a medallion with the god Janus, the Roman god of the past and the future. The snake Ouroboros (symbol for eternity) has turned around the trunk of the palm tree. At the foot ...
EditorialTwo Models of a Lifesaving Cart for Shipwrecks, Two identical models of a rescue device for rescue operations in the event of shipwreck on a beach. It is a two-wheeled car with the wheels in the middle, the wheels have seven double spokes, around which...
EditorialModel of a Pair of Hydraulic Forge Bellows, Model of a hydraulic bellows on a floorboard. It consists of a barrel that is hung horizontally in two forks and can be turned a quarter circle around its axis by means of a lever. The space inside is transfo...
EditorialModel of a Capstan, Model of a capstan on a wooden floor. It is a capstan for eight wind trees, two pawls in the floor prevent the falling back, one for each direction of rotation. The drum has five molars in the shape of a faint Z, which are filled in...
EditorialShip with sickle (escorpio). Manuscript B, sheet 90 v. Codex Ashburnham 2037, sheet 8 V. 1487-1492. Description: By means of a covering system, the ship can move and be manoeuvred without danger. The sickle is mounted on a wooden pole moved by a pinwhe...
EditorialTellurium-planetarium, driven by crank and wheels, shows the orbits of Mercury, Venus, earth and moon around the sun in corresponding rotation times. Signed " John Handsford, Bristol" Around 1780, 60 cm across.
EditorialArmillary sphere, heliocentric, which shows already the first four planets between Mars and Jupiter, giving their time of rotation. Large, outer ring with signs of the Zodiac. Unsigned, Italy, around 1810. 28 cm across.
EditorialCircumference of the Earth. Eratosthenes (250 BC) calculated the circumference of the Earth by measuring noontime shadows at two localities of different latitude. Leonardo da Vinci (1452-1519) developed a novel way to measure the area of a circle usin...
EditorialA Rotation Office, June 8, 1774, Etching and aquatint; printed in brown ink, Sheet: 7 3/16 ? 8 7/8 in. (18.2 ? 22.5 cm), Prints, After Henry Wigstead (British, 1745??1800 Margate).
EditorialCircumference of the Earth. Eratosthenes (250 BC) calculated the circumference of the Earth by measuring noontime shadows at two localities of different latitude. Leonardo da Vinci (1452-1519) developed a novel way to measure the area of a circle usin...
EditorialShip with sickle (escorpio). Manuscript B, sheet 90 v. Codex Ashburnham 2037, sheet 8 V. 1487-1492. Description: By means of a covering system, the ship can move and be manoeuvred without danger. The sickle is mounted on a wooden pole moved by a pinwhe...
EditorialNicolas Copernicus, polish astronomer, his observations of planetary movements developed the heliocentric system, axial rotation publd. 1543, revolutionized thinking.
EditorialArmillary sphere, heliocentric, which shows already the first four planets between Mars and Jupiter, giving their time of rotation. Large, outer ring with signs of the Zodiac. Unsigned, Italy, around 1810. 28 cm across.