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Theory Stock Photos And Images

74,094 theory royalty-free stock photos and images found for you.

Cosmic supermassive black hole 3d visualization artwork abstract background. wormhole portal in deep space fantastic science fiction art work. distant cosmic worlds spectacular stunning wallpaper Stock Photo
Cosmic supermassive black hole 3d visualization artwork abstract background. wormhole portal in deep space fantastic science fiction art work. distant cosmic worlds spectacular stunning wallpaperPREMIUM
Concept of darwin's theory of evolution, illustrated with the transformation of the human figure, from primitive man to modern man.
Concept of darwin's theory of evolution, illustrated with the transformation of the human figure, from primitive man to modern man.PREMIUM
Vectors
Concept of obesity and unhealthy diet with darwin's symbol showing the evolution of primitive man to modern man, resulting in overweight man walking with difficulty. Stock Photo
Concept of obesity and unhealthy diet with darwin's symbol showing the evolution of primitive man to modern man, resulting in overweight man walking with difficulty.PREMIUM
Vectors
A man, a puppeteer, controls the crowd with threads. the concept of world conspiracy, world government, manipulation, world control
A man, a puppeteer, controls the crowd with threads. the concept of world conspiracy, world government, manipulation, world controlPREMIUM
Alignment or array of many earth planet in outer space scenery 3d rendering illustration. multiverse or parallel universes concept.
Alignment or array of many earth planet in outer space scenery 3d rendering illustration. multiverse or parallel universes concept.PREMIUM
Different color circle palette combination set. vector
Different color circle palette combination set. vectorPREMIUM
Vectors
Image illustrating the concept of crossing the space-time barrier and the idea of teleportation in time and space. mixed media technique.
Image illustrating the concept of crossing the space-time barrier and the idea of teleportation in time and space. mixed media technique.PREMIUM
New jersey, united states, circa 1947 - portrait of albert einstein by orren jack turner colorized manually in 2022. photograph in color of the german physicist of jewish origin.
New jersey, united states, circa 1947 - portrait of albert einstein by orren jack turner colorized manually in 2022. photograph in color of the german physicist of jewish origin.PREMIUM
Buoyant force. archimedes' principle. iron ball, wood cube, and cork floating in glassware. physical law. beaker with liquid fluid. educational physics diagram. vector poster.
Buoyant force. archimedes' principle. iron ball, wood cube, and cork floating in glassware. physical law. beaker with liquid fluid. educational physics diagram. vector poster.PREMIUM
Vectors
Close up of atomic particle background science 3d illustration
Close up of atomic particle background science 3d illustrationPREMIUM
Gravity field bend spacetime relativity earth moon planets
Gravity field bend spacetime relativity earth moon planetsPREMIUM
Color theory. colour tones wheel complementary and secondary combinations. color tones combinations scheme vector illustration set
Color theory. colour tones wheel complementary and secondary combinations. color tones combinations scheme vector illustration setPREMIUM
Vectors
A clever possessed scientist stands at the blackboard with formulas and diagrams explaining enthusiastically scientific formulas. science and education.
A clever possessed scientist stands at the blackboard with formulas and diagrams explaining enthusiastically scientific formulas. science and education.PREMIUM
Bohr atomic model of a nitrogen atom. vector illustration for science Stock Photo
Bohr atomic model of a nitrogen atom. vector illustration for sciencePREMIUM
Vectors
Cosmic black hole and nebula 3d concept art purple stunning abstract background. grand wormhole portal in deep space fantastic science fiction movie scene. distant cosmic worlds spectacular wallpaper Stock Photo
Cosmic black hole and nebula 3d concept art purple stunning abstract background. grand wormhole portal in deep space fantastic science fiction movie scene. distant cosmic worlds spectacular wallpaperPREMIUM
Weight and buoyancy infographic diagram experiment of ball on water surface applying pressure by hand pushing it underwater buoyant force pumping ball upwards physics science education vector Stock Photo
Weight and buoyancy infographic diagram experiment of ball on water surface applying pressure by hand pushing it underwater buoyant force pumping ball upwards physics science education vectorPREMIUM
Vectors
Jupiter planet in the solar system - 3d illustration, closeup view
Jupiter planet in the solar system - 3d illustration, closeup viewPREMIUM
Wheel of life template diagram. line chart of coaching tool concept. vector Stock Photo
Wheel of life template diagram. line chart of coaching tool concept. vectorPREMIUM
Vectors
Drawn portrait of karl marx, famous american orator, abolitionist of slavery.
Drawn portrait of karl marx, famous american orator, abolitionist of slavery.PREMIUM
Vectors
Close up of colorful atomic particle background science 3d illustration
Close up of colorful atomic particle background science 3d illustrationPREMIUM
Magical portal in the forest, science fiction illustration
Magical portal in the forest, science fiction illustrationPREMIUM
Circular motion infographic diagram with example of satellite in space moving around earth planet and a stone tied to a rope hovering in the air for physics science education vector circulatory motion
Circular motion infographic diagram with example of satellite in space moving around earth planet and a stone tied to a rope hovering in the air for physics science education vector circulatory motionPREMIUM
Vectors
Buoyant force infographic diagram examples of cork wood iron showing gravity force downward depends on object weight against buoyant force upward water displacement physics science education vector
Buoyant force infographic diagram examples of cork wood iron showing gravity force downward depends on object weight against buoyant force upward water displacement physics science education vectorPREMIUM
Vectors
Particles, quantum entanglement (quantum correlation), quantum mechanics. 3d illustration Stock Photo
Particles, quantum entanglement (quantum correlation), quantum mechanics. 3d illustrationPREMIUM
Young mathematician solving problems and writing formulas on the chalkboard, back view
Young mathematician solving problems and writing formulas on the chalkboard, back viewPREMIUM
Albert einstein's the mass energy equivalence formula illustration
Albert einstein's the mass energy equivalence formula illustrationPREMIUM
Vectors
String theory. from molecule, and atoms, to electrons, protons, neutrons, quarks and gluon. quantum physics. atomic models. theoretical framework. vector diagram Stock Photo
String theory. from molecule, and atoms, to electrons, protons, neutrons, quarks and gluon. quantum physics. atomic models. theoretical framework. vector diagramPREMIUM
Vectors
Detailed sierpinski triangle construction. mathematical geometric endless fractal triangle. pyramid with an infinite pattern isolated on white
Detailed sierpinski triangle construction. mathematical geometric endless fractal triangle. pyramid with an infinite pattern isolated on whitePREMIUM
Vectors
Hooke's law. the force is proportional to the extension. physical education, and solid mechanics. spring, mass, and distance. vector illustration
Hooke's law. the force is proportional to the extension. physical education, and solid mechanics. spring, mass, and distance. vector illustrationPREMIUM
Vectors
Concept of darwin's theory of evolution, illustrated with the transformation of primitive man coming out of the forest to modern times.
Concept of darwin's theory of evolution, illustrated with the transformation of primitive man coming out of the forest to modern times.PREMIUM
Vectors
Maslows pyramid, hierarchy of human needs, vector flat illustration on white background.
Maslows pyramid, hierarchy of human needs, vector flat illustration on white background.PREMIUM
Vectors
Education concept with back view on pensive man in black suit looking at chalkboard painted with mathematical formulas Stock Photo
Education concept with back view on pensive man in black suit looking at chalkboard painted with mathematical formulasPREMIUM
Charles darwin funny cartoon illustration
Charles darwin funny cartoon illustrationPREMIUM
Vectors
Businessman trying to choose the right path. chaotic arrows leading to different directions. Stock Photo
Businessman trying to choose the right path. chaotic arrows leading to different directions.PREMIUM
Giraffe evolution and natural selection. millions of years later, after many generations, eventually all the giraffe had very long necks
Giraffe evolution and natural selection. millions of years later, after many generations, eventually all the giraffe had very long necksPREMIUM
Word theory made with letters on wooden blocks on the wooden notepad
Word theory made with letters on wooden blocks on the wooden notepadPREMIUM
Color light absorption and reflection. a red object reflects red and absorbs others colors of visible light. a white - reflects waves all colors. black - absorbs all colors of visible light. vector illustration
Color light absorption and reflection. a red object reflects red and absorbs others colors of visible light. a white - reflects waves all colors. black - absorbs all colors of visible light. vector illustrationPREMIUM
Vectors
Triune brain hypothesis. theory about evolution of human's brain. limbic system. reptilian complex (basal ganglia for instinctual behaviors), mammalian brain (septum, amygdalae, hypothalamus, hippocamp for feeling) and neocortex (cognition, language, sensory perception, and spatial reasoning). Stock Photo
Triune brain hypothesis. theory about evolution of human's brain. limbic system. reptilian complex (basal ganglia for instinctual behaviors), mammalian brain (septum, amygdalae, hypothalamus, hippocamp for feeling) and neocortex (cognition, language, sensory perception, and spatial reasoning).PREMIUM
Vectors
Atom 3d rendering, protons neutrons and electrons Stock Photo
Atom 3d rendering, protons neutrons and electronsPREMIUM
Dark energy with quantum waves, scientific concept
Dark energy with quantum waves, scientific conceptPREMIUM
Banner with colorful wooden picks, concept spectrum, panoply and chromatics, pattern background
Banner with colorful wooden picks, concept spectrum, panoply and chromatics, pattern backgroundPREMIUM
Theory practice concept. a man draws scales with the words theory and practice on bowls Stock Photo
Theory practice concept. a man draws scales with the words theory and practice on bowlsPREMIUM
Isometric professor lecture class background with characters of students and lecturer in front of projection screen vector illustration
Isometric professor lecture class background with characters of students and lecturer in front of projection screen vector illustrationPREMIUM
Vectors
Materials float or sink infographic diagram with examples of ball candle cork pencil rubber eraser egg rock screw key ring paper clip penny for physics science education
Materials float or sink infographic diagram with examples of ball candle cork pencil rubber eraser egg rock screw key ring paper clip penny for physics science educationPREMIUM
Vectors
Scientific formulas. mathematics and physics calculus on class chalkboard. algebra and physical science handwritten vector education concept. maths calculation on blackboard. physics science theorem
Scientific formulas. mathematics and physics calculus on class chalkboard. algebra and physical science handwritten vector education concept. maths calculation on blackboard. physics science theoremPREMIUM
Vectors
Multiple intelligences is psychological theory about people and their different types of intelligences
Multiple intelligences is psychological theory about people and their different types of intelligencesPREMIUM
Vectors
Mystical drawing: the third eye, all-seeing eye, circle of a moon phase. sacred geometry and egyptian cats bastet ancient egypt goddess. vector isolated for print, poster, t-shirt, card, tattoo symbol Stock Photo
Mystical drawing: the third eye, all-seeing eye, circle of a moon phase. sacred geometry and egyptian cats bastet ancient egypt goddess. vector isolated for print, poster, t-shirt, card, tattoo symbolPREMIUM
Vectors
Standard normal distribution, with the percentages for three standard deviations of the mean. sometimes informally called bell curve. used in probability theory and in statistics. illustration. vector Stock Photo
Standard normal distribution, with the percentages for three standard deviations of the mean. sometimes informally called bell curve. used in probability theory and in statistics. illustration. vectorPREMIUM
Vectors
Young woman levitates while reading a book
Young woman levitates while reading a bookPREMIUM
Evolution of life with round timeline for living development outline diagram
Evolution of life with round timeline for living development outline diagramPREMIUM
Vectors
Monkeys dressed in a t-shirt with the theory of evolution human on the contrary. vintage color engraving illustration for poster. isolated on white background. hand drawn design element Stock Photo
Monkeys dressed in a t-shirt with the theory of evolution human on the contrary. vintage color engraving illustration for poster. isolated on white background. hand drawn design elementPREMIUM
Vectors
Vector illustration of atomic models. scientists and years
Vector illustration of atomic models. scientists and yearsPREMIUM
Vectors
Extrasolar alien planet in deep space 3d art work spectacular colourful abstract background. astonishing cosmic gas giant spherical body and nebula. fantastic distant cosmos worlds stunning wallpaper Stock Photo
Extrasolar alien planet in deep space 3d art work spectacular colourful abstract background. astonishing cosmic gas giant spherical body and nebula. fantastic distant cosmos worlds stunning wallpaperPREMIUM
Young man is wearing aluminum cap, conspiracy theory concept Stock Photo
Young man is wearing aluminum cap, conspiracy theory conceptPREMIUM
Time travel machine. surreal steampunk technology
Time travel machine. surreal steampunk technologyPREMIUM
Concept of smartphone and social media addiction with darwin's symbol showing the evolution from primitive man to modern man, who moves forward looking at his screen.
Concept of smartphone and social media addiction with darwin's symbol showing the evolution from primitive man to modern man, who moves forward looking at his screen.PREMIUM
Vectors
Science and research of the universe, spiral galaxy and physical formulas, concept of knowledge and education. elements of this image furnished by nasa. Stock Photo
Science and research of the universe, spiral galaxy and physical formulas, concept of knowledge and education. elements of this image furnished by nasa.PREMIUM
Saturn and jupiter in the solar system - 3d illustration, closeup view Stock Photo
Saturn and jupiter in the solar system - 3d illustration, closeup viewPREMIUM
High energy particles flow through a tokamak or doughnut-shaped device. antigravity, magnetic field, nuclear fusion, gravitational waves and spacetime concept
High energy particles flow through a tokamak or doughnut-shaped device. antigravity, magnetic field, nuclear fusion, gravitational waves and spacetime conceptPREMIUM
Fight between ego and superego. concept sign for the conflicts in the decision making process
Fight between ego and superego. concept sign for the conflicts in the decision making processPREMIUM
Composition proportions guidelines set, attention spot of rule of thirds template in any aspect ratio monitors display Stock Photo
Composition proportions guidelines set, attention spot of rule of thirds template in any aspect ratio monitors displayPREMIUM
Vectors
Color wheel for color theory graphic design, with complementary, opposite an triads. Stock Photo
Color wheel for color theory graphic design, with complementary, opposite an triads.PREMIUM
Vectors
Expansion and evolution of the universe. physical cosmology, and big bang theory. cosmic timeline and evolution of stars, galaxy and universe after big bang Stock Photo
Expansion and evolution of the universe. physical cosmology, and big bang theory. cosmic timeline and evolution of stars, galaxy and universe after big bangPREMIUM
Vectors
3d render nuclear fusion, there is a nuclear fission, pure energy. copy space.
3d render nuclear fusion, there is a nuclear fission, pure energy. copy space.PREMIUM
Young angry man with aluminum cap and face mask over the eyes is gesturing angry. conspiracy theory concept.
Young angry man with aluminum cap and face mask over the eyes is gesturing angry. conspiracy theory concept.PREMIUM
Example of calculating of the determinant of a given two by two matrix
Example of calculating of the determinant of a given two by two matrixPREMIUM
Portrait of attractive thoughtful young european businesswoman with glowing mathematical formulas on chalkboard background. complex and algorithm concept
Portrait of attractive thoughtful young european businesswoman with glowing mathematical formulas on chalkboard background. complex and algorithm conceptPREMIUM
Maslow's hierarchy or maslow pyramid of needs in spanish language
Maslow's hierarchy or maslow pyramid of needs in spanish languagePREMIUM
Vectors
Human evolution stages and man progression stages
Human evolution stages and man progression stagesPREMIUM
Vectors
Blackwork tattoo flash. eye of providence. masonic symbol. all seeing eye inside triangle pyramid. new world order. isolated vector illustration
Blackwork tattoo flash. eye of providence. masonic symbol. all seeing eye inside triangle pyramid. new world order. isolated vector illustrationPREMIUM
Vectors
Young smart mathematician drawing math formulas on the chalkboard and thinking: he is solving problems and discovering new theories
Young smart mathematician drawing math formulas on the chalkboard and thinking: he is solving problems and discovering new theoriesPREMIUM
Colorful glowing time-space curvature, computer generated abstract background
Colorful glowing time-space curvature, computer generated abstract backgroundPREMIUM
All seeing eye triangle geometric vector design. providance pyramid tattoo symbol with occult secret hand sign. mystic spiritual illuminati emblem sketch drawing illustration Stock Photo
All seeing eye triangle geometric vector design. providance pyramid tattoo symbol with occult secret hand sign. mystic spiritual illuminati emblem sketch drawing illustrationPREMIUM
Color theory placard. colour models, harmonies, properties and meanings memo poster design Stock Photo
Color theory placard. colour models, harmonies, properties and meanings memo poster designPREMIUM
Vectors
Brain with tangled knot Vector Illustration
Brain with tangled knotPREMIUM
Vectors
Chalkboard with math equation. realistic chalked numbers on blackboard. handwritten formulas or functions and geometric shapes, solving mathematical tasks. vector education background
Chalkboard with math equation. realistic chalked numbers on blackboard. handwritten formulas or functions and geometric shapes, solving mathematical tasks. vector education backgroundPREMIUM
Vectors
Theory of evolution of man. silhouette with reflection. Stock Photo
Theory of evolution of man. silhouette with reflection.PREMIUM
Vectors
Vector evolution concept with ape to man growth process with monkey, caveman to businessman in suit holding suitcase using smartphone. mankind development, darwin theory Stock Photo
Vector evolution concept with ape to man growth process with monkey, caveman to businessman in suit holding suitcase using smartphone. mankind development, darwin theoryPREMIUM
Vectors
Measurement of mass infographic diagram including pan balance measures in kilograms and scale measures in grams for physics and chemistry science education
Measurement of mass infographic diagram including pan balance measures in kilograms and scale measures in grams for physics and chemistry science educationPREMIUM
Vectors
Young mathematician solving problems and writing formulas on the chalkboard, back view
Young mathematician solving problems and writing formulas on the chalkboard, back viewPREMIUM
Chalkboard with curved diagram of a black hole and white hole drawn on it, with copy space. educational concept, explain the structure of the universe.
Chalkboard with curved diagram of a black hole and white hole drawn on it, with copy space. educational concept, explain the structure of the universe.PREMIUM
All seeing eye triangle geometric vector design. providance pyramid tattoo symbol with occult secret hand sign. mystic spiritual illuminati emblem sketch drawing illustration
All seeing eye triangle geometric vector design. providance pyramid tattoo symbol with occult secret hand sign. mystic spiritual illuminati emblem sketch drawing illustrationPREMIUM
Vectors
String theory. from matter, molecule, and atom, to electrons, protons, neutrons and quarks. quantum physics. atomic models. theoretical framework. vector diagram Stock Photo
String theory. from matter, molecule, and atom, to electrons, protons, neutrons and quarks. quantum physics. atomic models. theoretical framework. vector diagramPREMIUM
Vectors
Concept of the disappearance of the human species with darwin's symbol showing the evolution of man leading to a dead end and a fall into the void.
Concept of the disappearance of the human species with darwin's symbol showing the evolution of man leading to a dead end and a fall into the void.PREMIUM
Vectors
The kinetic theory of matter infographic diagram showing four state solid liquid gas and plasma and particles motion and relation of energy speed distance for chemistry and physics science education Stock Photo
The kinetic theory of matter infographic diagram showing four state solid liquid gas and plasma and particles motion and relation of energy speed distance for chemistry and physics science educationPREMIUM
Vectors
Nuclear fission radioactive decay process of splitting an atom to create and harness energy as 3d illustration concept Stock Photo
Nuclear fission radioactive decay process of splitting an atom to create and harness energy as 3d illustration conceptPREMIUM
Standard normal distribution curve illustration on white Stock Photo
Standard normal distribution curve illustration on whitePREMIUM
Vectors
Photo of real authentic typeset letters forming chaos and mayhem text on vintage textured grunge copper background Stock Photo
Photo of real authentic typeset letters forming chaos and mayhem text on vintage textured grunge copper backgroundPREMIUM
Math and science formulas with numbers on the blackboard.
Math and science formulas with numbers on the blackboard.PREMIUM
Vectors
Gauss distribution. standard normal distribution. gaussian bell graph curve. business and marketing concept. math probability theory. editable stroke. vector illustration isolated on white background.
Gauss distribution. standard normal distribution. gaussian bell graph curve. business and marketing concept. math probability theory. editable stroke. vector illustration isolated on white background.PREMIUM
Vectors
A man thinking how to solve a math problem Stock Photo
A man thinking how to solve a math problemPREMIUM
Eye of providence. masonic symbol. all seeing eye inside triple moon pagan wicca moon goddess symbol. vector illustration. tattoo, astrology, alchemy, boho and magic symbol. circle of a moon phase Stock Photo
Eye of providence. masonic symbol. all seeing eye inside triple moon pagan wicca moon goddess symbol. vector illustration. tattoo, astrology, alchemy, boho and magic symbol. circle of a moon phasePREMIUM
Vectors
Handwritten equations on a green blackboard
Handwritten equations on a green blackboardPREMIUM
Close up of colorful atomic particle background science 3d illustration
Close up of colorful atomic particle background science 3d illustrationPREMIUM
Beautiful woman thinking how to solve a math problem Stock Photo
Beautiful woman thinking how to solve a math problemPREMIUM
Quantum mechanics elements with famous formulas
Quantum mechanics elements with famous formulasPREMIUM
Vectors
Masonic symbol the all-seeing eye inside the pyramid triangle icon. vector illustration on a white background
Masonic symbol the all-seeing eye inside the pyramid triangle icon. vector illustration on a white backgroundPREMIUM
Vectors
Conspiracy theory and manipulation concept in time, group of pawn chess pieces are surrounding a piece with a tinfoil hat, gray background, selected focus, very narrow depth of field
Conspiracy theory and manipulation concept in time, group of pawn chess pieces are surrounding a piece with a tinfoil hat, gray background, selected focus, very narrow depth of fieldPREMIUM
Atomic models. scientific theory about particles. physics. vector diagram Stock Photo
Atomic models. scientific theory about particles. physics. vector diagramPREMIUM
Vectors
Close up of colorful atomic particle background science 3d illustration
Close up of colorful atomic particle background science 3d illustrationPREMIUM