Type VIIC42 U-boat, artwork
First nuclear submarine Nautilus, artwork
Cornelius Drebbel's submarine, artwork
Geothermal district heating, artwork
Dreadnought battleship, illustration
Jet engine, cutaway artwork
World's first working laser, artwork
Golden Hind galleon, illustration
Laser, illustration
Elements of the traveling-wave tube (TWT), used to amplify microwave signals over broad bandwidths.
Gyrotron, electrons from the cathode acquire cyclotron rotation in the cavity.
Cross section of a V-type engine.
Aircraft flight recorder, illustration
Soyuz 4 spacecraft with docking mechanism, illustration
Volcano collapse sequence, artwork
Atheromatous artery, artwork
Passenger aircraft air circulation system
Seismic imaging with hydrophones
Mapping the ocean floor, illustration
Deep sea mining operation, illustration
客船
Underwater earthquake and tsunami
Early portable military radio, artwork
Blower-scavenged, two-stroke-cycle engine with uniflow scavenging, displaying both upstroke and downstroke.
Diesel engine equipped with a precombustion chamber.
Voyager spacecraft and Jupiter, artwork
Compound pier
Warship
The four strokes of a four-stroke cycle engine - intake, compression, power, and exhaust. Only the intake stroke delivers power.
Gotthard Base Tunnel, artwork
Carbon dioxide vehicle emissions, artwork
クレーン
Lumbar plexus, illustration
Phrenic nerves, illustration
Deep cervical plexus, illustration
Nanorobots, artwork
3D printing, artwork
Distal finger joint anatomy, illustration
Diagram depicting the process of atoll formation. Atolls are formed from the remnant parts of sinking volcanic islands.
HMS Challenger, illustration
Darlingtonia californica, artwork
Fission bomb designs
Viking 1 mapping Martian surface, illustration
Automotive-type lead-acid battery, a storage battery that holds its charge for a long time and can be recharged.
Male perineum, 19th Century illustration
Hydrogen-powered submarine, artwork
Aircraft toilet system, illustration
Rosetta spacecraft's Philae lander at comet, illustration
Sorksbill (Erodium glandulosum), artwork
Orbit of near-Earth asteroid Apophis
Georges Leclanche's dry cell and its later variations, zinc chloride and alkaline cells, are batteries commonly used worldwide.
Cutaway view of a typical construction of a miniature power cell, as in a zinc-silver oxide or zinc-mercuric oxide system.
An internal-combustion engine goes through four strokes: intake, compression, combustion (power), and exhaust.
Typical gasoline engine cooling system.
Orion and Apollo spacecraft lunar orbits, illustration
SOFIA airborne observatory, illustration
Fermi Gamma-ray Space Telescope, artwork
Historic blood donor information leaflet
DNA molecule, illustration
River estuary, artwork
Robot head, artwork
3D printer, conceptual artwork
19th Century amphibious vehicle, artwork
Demonstration of sound carried by air
3D printing, illustration
Magneto-electric machine, 19th century illustration
Orchid (Masdevallia chimaera), artwork
Columbine (Aquilegia sp,), artwork
Francis Drake's Golden Hind, 16th century
Profile view of the Titanic, illustration
Vegetation profile of a grassland.
Retro car, illustration
Normal fault, artwork
Strike-slip fault, artwork
Oblique-slip fault, artwork
19th century gas meter, artwork
The components of a personal computer system.
Dream Chaser Cargo System in flight, illustration
American P-38 Lightning WWII fighter aircraft, illustration
Narrowed blood vessel, artwork
Bee pollinating a flower, artwork
Opium poppy (Papaver somniferum)
Love-in-a-mist (Nigella damascena)
Hardy larkspur (Delphinium formosum)
HMS Endeavour off coastline, illustration
Female urinary bladder, artwork
Uterus blood supply, illustration
Uterus anatomy, illustration
Muscles of the perineum, illustration
Upper body muscles, illustration
Human airways, 19th Century illustration
Lung anatomy, 19th Century illustration
Bladder anatomy, illustration
Prostate anatomy, 19 Century illustration
Penis anatomy, 19th Century illustration
Brain and spinal anatomy, 19th century illustration
Human mouth anatomy, 19th Century illustration
Human eye anatomy, 19th Century illustration
Salivary glands, 19th Century illustration
Neck blood vessels, 19th Century illustration
Electric toothbrush, illustration
Saturn V rocket first stage, illustration
Cruise liner, illustration
Mars 3 spacecraft lander, illustration
Petrol engine, illustration
Ejaculatory system, illustration
Female genitals, illustration
Testicle anatomy, illustration
Female reproductive system, illustration
Testicles anatomy, illustration
スポーツ&レジャー
Reverse fault, artwork
Thrust fault, artwork
Mars Viking orbiter, artwork
Colosseum in Rome, artwork
Roman baths, artwork
Monastery at Castrojeriz, artwork
Great Mosque of Seville, artwork
Hyperloop transport, artwork
Venera 4 lander and service craft, illustration
Venera 4 lander, illustration
Soyuz 4 spacecraft in Earth orbit, illustration
Gallstones, artwork
Unicorn, 13th Century artwork
Car showing battery and magnetic force, illustration
15th century ship
Modern version of the Leclanche cell. This heavy-duty zinc-carbon primary battery is a dry cell with an immobilized electrolyte.
Cutaway view of an alkaline-manganese dioxide power cell.
Wet scrubber using a limestone slurry to remove sulfur dioxide from flue gas.
Thermonuclear warhead
Human brain, artwork
Eye anatomy,artwork
Muscle fibre structure, artwork
Neuromuscular junction, artwork
Tongue anatomy, artwork
Female reproductive system, artwork
Kidney stones, artwork
Laser eye surgery, artwork
Human olfactory region, artwork
Seversky Super Clipper, illustration
European columbine (Aquilegia vulgaris)
Mars 3 spacecraft, illustration
Jupiter, illustration
Earth's internal structure, artwork
Structure of the cochlea, artwork
Earth's magnetic field, artwork
Contact lens and eye anatomy, artwork
Goethea strictiflora flower, artwork
タクシー
街のショップ
Cartoon by W. Heath Robinson
Frank Whittle, caricature
Supercavitating torpedo, illustration
INTEGRAL gamma ray space telescope, illustration
19th Century military submarine, artwork
Loudspeaker soundwave, illustration
Solar system, artwork
Drug capsules, artwork
Evolution of the eye, artwork
Formation of sodium chloride, artwork
Utatsusaurus dinosaur, artwork
Sharovipteryx dinosaur, artwork
Peteinosaurus zambelli dinosaur, artwork
Staurikosaurus pricei dinosaur, artwork
Lagosuchus dinosaur, artwork
Aliwalia rex dinosaur, artwork