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Typical gasoline engine lubrication system.

The gasoline carburetor is a device that introduces fuel into the airstream as it flows into the engine.

Typical gasoline engine cooling system.

Four types of gasoline engines: opposed-piston engine, rotary engine, in-line engine, and V-type engine.

The four strokes of a four-stroke cycle engine - intake, compression, power, and exhaust. Only the intake stroke delivers power.

An internal-combustion engine goes through four strokes: intake, compression, combustion (power), and exhaust.

Cross section of a V-type engine.

Diesel engine equipped with a precombustion chamber.

Blower-scavenged, two-stroke-cycle engine with uniflow scavenging, displaying both upstroke and downstroke.

The sequence of events in a four-stroke diesel engine involves a single intake valve, fuel-injection nozzle, and exhaust valve.

Cutaway view of a typical construction of a miniature power cell, as in a zinc-silver oxide or zinc-mercuric oxide system.

Modern version of the Leclanche cell. This heavy-duty zinc-carbon primary battery is a dry cell with an immobilized electrolyte.

A fuel cell (actually a group of cells) has essentially the same kinds of components as a battery.

Georges Leclanche's dry cell and its later variations, zinc chloride and alkaline cells, are batteries commonly used worldwide.

Cutaway view of an alkaline-manganese dioxide power cell.

Diagram of a two-cavity klystron, used as an amplifier and RF signal source at microwave frequencies, and also as an oscillator.

Elements of a magnetron, used to generate power for radar systems, microwave ovens, plasma screens, and linear accelerators.

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.

A tokamak is a toroidal magnetic confinement system used as a method of achieving fusion energy.

A cutaway view shows how light passes through the lenses and prisms of binoculars.

Nickel (hydroxide)-cadmium cell of “jelly roll” construction. This rechargable battery is commonly used in portable devices.

The Apollo program: the Saturn V launch vehicle and configurations of the spacecraft modules at launch and during the journey.

U.S. space shuttle, composed of a winged orbiter, an external liquid-propellant tank, and two solid-fuel rocket boosters.

U.S. space station Skylab (occupied 1973-74), shown with docked Apollo Command and Service modules.

The Michelson interferometer measures the effect on the speed of light of the motion of the ether through which light travels.

Solar cells, whether used in a central power station, a satellite, or a calculator, have the same basic structure.

An electron (e) in a solar cell interacting with light and dissipating excess energy is analogous to a child playing on a slide.

Automotive-type lead-acid battery, a storage battery that holds its charge for a long time and can be recharged.

Proton exchange membrane (PEM) fuel cell.

A grid-connected solar cell system.

Basic components of an electrochemical cell.

Cross section of a typical bomb calorimeter.

Schematic drawing of the structure of a typical bacterial cell of the bacillus type.

Diagram of a wave system depicting typical divergence and convergence distributions for non-tilting and tilting systems.

Petrol engine, illustration

Wet scrubber using a limestone slurry to remove sulfur dioxide from flue gas.

Two types of pressure gauge: the U-tube manometer and the Bourdon-tube gauge.

Fission bomb designs

Thermonuclear warhead

Piston engine and oil, artwork

Rising air in an unstable atmosphere

Coriolis force

Electron shell

Compton effect

Zonation of the ocean. Note that in the littoral zone the water is at the high-tide mark.

Vegetation profile of a temperate deciduous forest.

Vegetation profile of a grassland.

The process of cell division by mitosis.

Stages in the process of meiosis, cell division among sexually reproducing organisms.

Receptor-mediated endocytosis enables cells to ingest molecules such as protein that are necessary for normal cell functioning.

The endoplasmic reticulum plays an important role in the biosynthesis, processing, and transport of proteins and lipids.

Transverse section of an artery.

Human arterial supply and venous drainage of the organs.

Diagram showing a healthy heart valve compared with a diseased heart valve and an artificial heart valve.

Comparison of a normal heart to one with a ventricular septal defect

Diagram demonstrating the difference between a normal heart and a heart with an atrial septal defect

Average exchange of energy between the surface, atmosphere, and space, as percentages of incident solar radiation.

The stages in the evolution of a wave (frontal) cyclone.

General patterns of atmospheric circulation over an idealized Earth with a uniform surface and the actual Earth.

Annual temperature and precipitation patterns for several locations with different climatic conditions.

Horizontal divergence and convergence patterns associated with the polar-front jet.

The onset and retreat of the West African monsoon with respect to the timing of the direct rays of the sun.

The surface reflectance differences between a pre-agricultural (forest) and a modern agricultural (patchwork heating) landscape.

Electromagnetic spectrum. The visible range (shaded portion) is shown enlarged on the right.

Types of faulting in tectonic earthquakes.

Seismic ray types in Earth's interior from earthquake at F.

Generated by an undersea earthquake, a tsunami may propagate over open ocean waters before cresting and inundating a coastline.

Three types of natural selection, showing the effects of each on the distribution of phenotypes within a population.

Evolutionary history of the globin genes. The dots indicate the duplication of ancestral genes, giving rise to new gene lineage.

The Hardy-Weinberg Law applied to two alleles.

The journey of the Galileo spacecraft to Jupiter, highlighting major observations along the trajectory, as well as their dates.

Basic characteristics of orbits in which a satellite can be placed around Earth, categorized by inclination, shape and altitude.

The steps involved in the engineering of a recombinant DNA molecule.

The diffusion of water across a semipermeable membrane.

Engine oil advertising realistic horizontal illustration with plastic container piston and fully synthetic text vector illustration

Engine oil advertising design concept with realistic image of piston in motor oil lubricant on transparent background isolated vector illustration

Diagram of an artificial pacemaker

A heart-lung machine diverts blood from the body to an oxygenator, which removes CO2, adds O2, and returns the blood to the body

Electrical conduction in the heart in healthy individuals is controlled by pacemaker cells in the sinoatrial node.

Gas engine piston, illustration

Earth's prebiotic and modern atmosphere

Phylogeny based on differences in the protein sequence of cytochrome c in organisms ranging from Neurospora mold to humans.

Pay-off matrix showing bourgeois, or mixed attack/retreat behaviour, as the most stable strategy for a population.

Apollo mission profile for a lunar landing and return, outlining the various stages along the mission.

Vegetation profile of a desert.

Vegetation profile of tropical mountain lands.

The analysis of sound frequencies by the basilar membrane.

The two sensory organs of balance: the cristae of the semicircular ducts and the maculae of the utricle and saccule.

Diagram of a mammalian muscle spindle.

Bohr atomic model

Annual circulation patterns in a dimictic lake: stratification in the summer and complete overturn in the autumn and spring.

Four main types of estuaries: A) salt wedge estuary, B) partially mixed estuary, C) vertically homogeneous estuary, D) fjord.

The components of a scanning electron microscope (SEM).

The components of a transmission electron microscope (TEM).

The diffusion of potassium cations across a semipermeable membrane.

Changes in ion permeance underlying the action potential.

Theoretical depiction of the movement of tectonic plates across Earth's surface.

Diagram depicting the process of atoll formation. Atolls are formed from the remnant parts of sinking volcanic islands.

Theoretical diagram showing the effects of an advancing tectonic plate on other adjacent, but stationary, tectonic plates.

Diagram of a human uterus during the fourth month of pregnancy.

Differentiation of the external genitalia in the human embryo and fetus.

High quality engine oil advertising horizontal poster with description of properties realistic vector illustration

Engine oil advertising transparent background with car lubricant spilling from white plastic bottle realistic vector illustration

Piston engine, artwork

Piston engine, artwork

Engine oil advertising realistic banner plastic canister for motor oil on dark road background with car vector illustration

gas station icon

tank car icon

tank car icon

tank car icon

tank car icon

filling icon

Scales with electric car and fuel car, illustration

Scales with electric car and fuel car, illustration

Earth with fuel pump and electric car cable, illustration

Earth with electric car and fuel car, illustration

Earth with electric car and fuel car, illustration

Muscle structure, artwork

Seasons change because more direct sunlight falls on some parts of Earth than others at different times of the year.

Isometric image of a red iron canister for gasoline or oil. Chemical fluid container. Chemically hazardous liquid petroleum product. Storage of combustible materials. Flat vector illustration isolated. Iron red canister for oil or gasoline. Liquid combust

vector silhouette spark plug on white background

Cross section comparing the left ventricular wall of normal heart to a left ventricular wall that has experienced hypertrophy.

Isometric image of a blue petroleum station. Oil pump. Equipment for refueling vehicles. Gas station, refueling gun. Oil industry. Petroleum industry pollution vector presentation infographic. Petrol station blue pump isolated on white. Gas, oil fuel for

Space station Mir, after its completion in 1996, with the launch dates of each modular component shown.

Car disc brake system, illustration

Car disc brake system, illustration

Hydraulic lift, illustration

Hydraulic lift, illustration

Polar covalent bond

Ionic bond

Vegetation profile of a boreal forest. The tree layer consists mainly of conifers, and mosses are the predominant ground cover.

The weather model of meteorologist Edward Lorenz.

Displacements in the Earth in four types of free vibrations.

Light waves matching the orientation of the molecules of a polarizing filter are absorbed, reducing the intensity of the light.

The artery wall and the ultrastructure of the smooth muscle cells within it.

Proxima Centauri interstellar spacecraft, illustration

German WWII ramjet engine blueprint

Locomotive engine, illustration

Locomotive engine, illustration

Locomotive engine, illustration

oil icon

oil icon

oil icon

Decane organic compound molecule

Auto gasoline battery charger fuel pump station service timeline infographics with orange hands vector illustration

Auto gasoline fuel pump station service infographics with world map on black background vector illustration

Petroleum industry infographics set with gasoline processing symbols and charts vector illustration. Petroleum Infographics Set

Karl Benz, German engineer

Oil industry business concept of gasoline diesel production fuel distribution and transportation four icons composition vector illustration

Oil industry business concept of gasoline diesel production fuel distribution and transportation four icons composition vector illustration

Ecological energy cartoon. Ecological energy cartoon poster with eco fuel station retro style vector illustration

Chemical composition of nicotine, conceptual image

Mechanism of enzyme action, illustration

Human muscle structure, artwork

Animal cell structure

Car maintenance and repair icon set

Atmospheric pressure glass trick, illustration

Atmospheric pressure glass trick, illustration

Electric motor and circuit symbol, illustration

Engine oil advertising transparent set of canisters containers and bottles for packing of motor oil realistic vector illustration

An active-matrix thin-film transistor (TFT) liquid crystal display. A TFT is associated with each pixel of the display screen.

Pressure transmission in liquids, illustration

Pressure transmission in liquids, illustration

Hydraulic press, illustration

Gasoline icon

Gasoline icon

Gasoline icon

Uniformly accelerated motion; s = speed, a = acceleration, t = time, and v = velocity.

In Ptolemy's geocentric model of the universe, the Sun, Moon, and each planet orbit a stationary Earth.

Approaching the speed of light, an object appears shorter, with a longer time interval, relative to its intervals when at rest.

The 4-D space-time continuum is distorted in the vicinity of any mass, depending on the mass and the distance from the mass.

Height of space from Earth, illustration

Height of space from Earth, illustration

Height of space from Earth, illustration

Height of space from Earth, illustration

Drinking through a straw, illustration

Drinking through a straw, illustration

Cardiac stress test, artwork

Duplex engine distribution, illustration

Benz engine distribution, illustration

Motor effect, illustration

German WWII ramjet bomber blueprint

Speedometer

Spring balance

Goose barnacle anatomy, artwork

Electric cell and circuit symbol, illustration

Electric lamp and circuit symbol, illustration

Circuit board, illustration

Flask with oil isolated at white, crude oil or petroleum inside medical bulb, oil storage. Petrol flask icon for web design, site, logo or app. Test tube with sample of oil for making experiments. Flask with oil isolated at white, crude oil petroleum insi

Compound engine blueprint, illustration

Compound engine blueprint, illustration

Renault car ignition, illustration

Golden machine cogs making up abstract business concept

Campbell petrol engine, illustration

Gardner petrol engine, illustration

Jacquard perforating machine blueprint, illustration

Lathe blueprint, illustration

Sewing machine blueprint, illustration

Sewing machine blueprint, illustration