写真素材の検索結果

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

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

Rising air in an unstable atmosphere

Vegetation profile of a temperate deciduous forest.

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

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

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

Displacements in the Earth in four types of free vibrations.

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

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

Earth's prebiotic and modern atmosphere

Types of faulting in tectonic earthquakes.

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

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

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

The Hardy-Weinberg Law applied to two alleles.

Vegetation profile of a grassland.

Transverse section of an artery.

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

Elements of the traveling-wave tube (TWT), used to amplify microwave signals over broad bandwidths.

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

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

Coriolis force

Electron shell

Basic components of an electrochemical cell.

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

Earthquake and tsunami, artwork

Vegetation profile of a desert.

Vegetation profile of tropical mountain lands.

Cross section of a typical bomb calorimeter.

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

Cross section of a V-type engine.

Diesel engine equipped with a precombustion chamber.

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.

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

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

The analysis of sound frequencies by the basilar membrane.

The components of a scanning electron microscope (SEM).

Gyrotron, electrons from the cathode acquire cyclotron rotation in the cavity.

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

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

The process of cell division by mitosis.

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

Human arterial supply and venous drainage of the organs.

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

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

The existence of parallel magnetic anomalies in the oceanic crust corroborates the hypothesis of seafloor spreading .

Polar covalent bond

Bohr atomic model

Mapping the ocean floor, illustration

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

Diagram of a mammalian muscle spindle.

Fission bomb designs

Thermonuclear warhead

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

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

Cutaway view of an alkaline-manganese dioxide power cell.

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

Typical gasoline engine cooling system.

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.

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

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

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

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

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

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

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

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

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

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

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

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

The diffusion of water across a semipermeable membrane.

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

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

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

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

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

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

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

Tsunami formation. illustration

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

Proton exchange membrane (PEM) fuel cell.

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

Internal structure of Mercury, illustration

Internal structure of Mercury, illustration

Internal structure of Earth, illustration

Male urogenital system, artwork

Female reproductive system, artwork

Osteoarthritis of the knee, artwork

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

Compton effect

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

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.

A grid-connected solar cell system.

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

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

Underwater earthquake and tsunami, illustration

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

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

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

The weather model of meteorologist Edward Lorenz.

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

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.

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

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

The first reduction for an n-person voting game theory, illustrating the strategies least suitable for each participant.

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

矢印　循環　輪

矢印　循環　輪

矢印　循環　輪

Layers of the ionosphere

Ionic bond

Divergent tectonic plate boundary, illustration

The relationship between hot springs and epithermal veins.

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

Part of the elliptic paraboloid z = x2 + y2 which can be generated by rotating the parabola z = x2 (or z = y2) about the z-axis.

Prehistoric sea snails, illustration

Mechanics of respiration, artwork

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

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

Typical gasoline engine lubrication system.

Operating principle of a parallel-flow heat exchanger.

Height of space from Earth, illustration

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

Deep sea mining operation, illustration

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

Hydrological soundings, 1689 artwork

Mariana trench, illustration

The figure shows part of the graph of the polynomial equation y = 3x4 - 16x3 + 6x2 + 24x + 1.

Several points are labeled in a two-dimensional graph, known as the Cartesian plane.

津波が起こるメカニズムを解説するイラスト

The circulation of nitrogen in various forms through nature, a process essential to life on Earth.

Ediacaran life forms on the seafloor

Ediacaran life forms on the seafloor

Ediacaran life forms on the seafloor

Ediacaran life forms on the seafloor

Ediacaran life forms on the seafloor

Weathering frees heavy minerals from their matrix, washing them down slope where flowing water forms them into placer deposits.

Ediacaran organisms, illustration

Ediacaran organisms, illustration

Sea plants, illustration

Relationships of endocrine glands, from the pituitary-hypothalamus system to the vertebrate endocrine glands and their hormones.

Mass spectrometer and data chart, illustration

Sonar, illustration

Human olfactory region, artwork

Human olfactory region, artwork

Knee anatomy, artwork

Endometrial cancer, artwork

Shoulder joint, artwork

Female urinary system, artwork

Synapse, artwork

Eye anatomy,artwork

Kidney anatomy, artwork

Bone structure, artwork

Breast anatomy, artwork

Pythagorean theorem, illustration

Cardiac stress test, artwork

Gender characteristics, artwork

Muscle structure, artwork

Protein synthesis, artwork

Gate control theory of pain, artwork

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

The life cycle of a malaria parasite, from its stages within the body of a mosquito to those within the body of a human.

Height of space from Earth, illustration

Height of space from Earth, illustration

Height of space from Earth, illustration

Neurotransmitters and the brain, artwork

Moon interior

Speedometer

Spring balance

Sea bed with an oil rig and a natural gas rig, illustration

Obtaining approximate measurements through the use of differentiation and integration.

Artist's impression of the Oort Cloud

Electrical conduction of the heart

Vector addition

Algae and corals, illustration

Atrypa, illustration

Cephalopod, illustration

Greenhouse effect on Earth

Interior of the Sun, illustration

Viral transfer of bacterial DNA, artwork

Set of sea fish color design flat. Ocean fish animal, nature cartoon wildlife aquarium, underwater life sea fish, exotic drawing marine fauna sea fish vector illustration

Set of sea fish color design flat. Sea and fish, ocean fish animal, nature cartoon sea fish, wildlife aquarium, underwater life sea fish, exotic sea fish, drawing marine fauna sea fish illustration

Graph with arrow sign

Pluto and the Kuiper belt

A cross section of Earth's outer layers, from the crust through the lower mantle.

The mammalian pituitary gland, showing the anterior lobe (adenohypophysis) and posterior lobe (neurohypophysis).

Electrocardiogram of the alternating contractions during one heartbeat and a diagram of the heart's impulse-conducting system.

Fantastic sea landscape with a ship and the underwater world

Van Allen radiation belt

The Hawk-Dove model of game theory, illustrating the costs and benefits of fighting over resources.

3d rising green arrow growth chart