Vídeos stock livres de direitos de Quadro negro

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Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:07Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Brilliant Young Mathematician Approaches Blackboard and Finishes Solving Long and Complex Equation. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:14Brilliant Young Mathematician Approaches Blackboard and Finishes Solving Long and Complex Equation. Shot on RED EPIC-W 8K Helium Cinema Camera.
Time-Lapse of the Brilliant Young Mathematician Writes Complex Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:16Time-Lapse of the Brilliant Young Mathematician Writes Complex Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Back View of the Students in the Lecture Hall Listening to a Prominent Professor Giving a Lecture. Charismatic Lecturer Reads to the Bright Young People Study at the University.
4k00:11Back View of the Students in the Lecture Hall Listening to a Prominent Professor Giving a Lecture. Charismatic Lecturer Reads to the Bright Young People Study at the University.
Concepts on blackboard at school. Young people, students and pupils in classroom. Smart hispanic girl writing math formula on board during lesson. Portrait of female child smiling, looking at camera
4k00:10Concepts on blackboard at school. Young people, students and pupils in classroom. Smart hispanic girl writing math formula on board during lesson. Portrait of female child smiling, looking at camera
Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula on the Blackboard. Underlining Equation. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:16Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula on the Blackboard. Underlining Equation. Shot on RED EPIC-W 8K Helium Cinema Camera.
hand-drawn scribbles transition, doodles and sketch effects with black color pencil on chroma key green screen background, with alpha channel,imagination education child concept
4k00:08hand-drawn scribbles transition, doodles and sketch effects with black color pencil on chroma key green screen background, with alpha channel,imagination education child concept
Brilliant Young Academic Finishes Writing Big and Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:14Brilliant Young Academic Finishes Writing Big and Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Following Close-up Shot of the Hand Holding Chalk and Writes Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:15Following Close-up Shot of the Hand Holding Chalk and Writes Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k close view of pupils in classroom of African children writing English in school notebooks.
4k00:164k close view of pupils in classroom of African children writing English in school notebooks.
Concept on blackboard at school. Young people, student and pupil in classroom. Intelligent and successful hispanic girl in class. Portrait of female child smiling, looking at camera, holding books
4k00:13Concept on blackboard at school. Young people, student and pupil in classroom. Intelligent and successful hispanic girl in class. Portrait of female child smiling, looking at camera, holding books
Concepts on blackboard at school. Young people, students and pupils in classroom. Intelligent and successful latino boy in class. Portrait of male kid smiling, looking at camera
4k00:15Concepts on blackboard at school. Young people, students and pupils in classroom. Intelligent and successful latino boy in class. Portrait of male kid smiling, looking at camera
Question mark on chalkboard :4K Footage
4k00:08Question mark on chalkboard :4K Footage
Scientist writing formulas on chalkboard. Hand with chalk wrote physics formulas on black chalkboard closeup
4k00:08Scientist writing formulas on chalkboard. Hand with chalk wrote physics formulas on black chalkboard closeup
Question mark drawn in chalk on a blackboard
hd00:08Question mark drawn in chalk on a blackboard
scientist wrote mathematical formulas on a blackboard
4k00:36scientist wrote mathematical formulas on a blackboard
Long Shot of The Busy Office Where Young Creative People Work on Personal Computers, Draw Project Outline on Blackwall and Have Discussions with Colleagues. Stylish People in Trendy Environment. UHD.
4k00:16Long Shot of The Busy Office Where Young Creative People Work on Personal Computers, Draw Project Outline on Blackwall and Have Discussions with Colleagues. Stylish People in Trendy Environment. UHD.
Talanted dj is creating music in a recording studio on a mixing console.
4k00:24Talanted dj is creating music in a recording studio on a mixing console.
Concepts on blackboard at school. Young people, quiet student and pupil in classroom. Hispanic boy with doubts and thoughts in class. Portrait of male child thinking
4k00:18Concepts on blackboard at school. Young people, quiet student and pupil in classroom. Hispanic boy with doubts and thoughts in class. Portrait of male child thinking
Time-Lapse/ Stop Motion of the Young Man Drawing on Blackboard Inspirational Keywords for Business Start-up. Colorful Drawings with Bits of Wisdom. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:12Time-Lapse/ Stop Motion of the Young Man Drawing on Blackboard Inspirational Keywords for Business Start-up. Colorful Drawings with Bits of Wisdom. Shot on RED EPIC-W 8K Helium Cinema Camera.
Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:16Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Classroom Full of Multi Ethnic Students. Modern University with Bright Young People in the Lecture Hall.
4k00:11Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Classroom Full of Multi Ethnic Students. Modern University with Bright Young People in the Lecture Hall.
scientist wrote mathematical formulas on a blackboard
4k00:20scientist wrote mathematical formulas on a blackboard
4K Portrait of academic man writing math formulas on blackboard
4k00:264K Portrait of academic man writing math formulas on blackboard
High-Angle Shot of a Brilliant Young Student Writing Big Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:11High-Angle Shot of a Brilliant Young Student Writing Big Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Brilliant Young Academic Approaches Blackboard with Complex Mathematical Formula Written on it, Starts Thinking about Solution. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:17Brilliant Young Academic Approaches Blackboard with Complex Mathematical Formula Written on it, Starts Thinking about Solution. Shot on RED EPIC-W 8K Helium Cinema Camera.
Education concept - ABC alphabet school blackboard concept. School teacher writing ABC alphabet in English class or preschool.on chalkboard.
hd00:07Education concept - ABC alphabet school blackboard concept. School teacher writing ABC alphabet in English class or preschool.on chalkboard.
Desks in empty classroom, lecture hall in the College, School, University. The study hall represents lack of state funding
4k00:16Desks in empty classroom, lecture hall in the College, School, University. The study hall represents lack of state funding
Empty classroom with wooden desks, white and green chalk boards in school. empty classroom. Abandoned School classroom with school desks and blackboard
4k00:07Empty classroom with wooden desks, white and green chalk boards in school. empty classroom. Abandoned School classroom with school desks and blackboard
Concept on blackboard at school. Young people, student and pupil in classroom. Smart hispanic boy writing math formula on board during lesson. Portrait of male child smiling, looking at camera
4k00:12Concept on blackboard at school. Young people, student and pupil in classroom. Smart hispanic boy writing math formula on board during lesson. Portrait of male child smiling, looking at camera
blackboard with soccer strategies simulation for the attack
4k00:08blackboard with soccer strategies simulation for the attack
Closeup young doctor or surgeons in a modern clinic room taking off the surgical mask and smiling large in front of the camera , curly hair and white teeth. 4k
4k00:09Closeup young doctor or surgeons in a modern clinic room taking off the surgical mask and smiling large in front of the camera , curly hair and white teeth. 4k
cartoon marker drawn planet earth globe spin on white blackboard background seamless endless loop animation - new quality unique handmade retro vintage stop motion dynamic joyful video
hd00:06cartoon marker drawn planet earth globe spin on white blackboard background seamless endless loop animation - new quality unique handmade retro vintage stop motion dynamic joyful video
Brilliant Young Mathematician Approaches Big Blackboard and Thinks about Solving Long and Complex Equation/ Formula. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:16Brilliant Young Mathematician Approaches Big Blackboard and Thinks about Solving Long and Complex Equation/ Formula. Shot on RED EPIC-W 8K Helium Cinema Camera.
Top Manager and Female Executive Outlining Company Optimization Plan on a Glass Blackboard, Drawing with Market and Using Smartphone while Standing in the Modern Glass and Concrete Office.
4k00:14Top Manager and Female Executive Outlining Company Optimization Plan on a Glass Blackboard, Drawing with Market and Using Smartphone while Standing in the Modern Glass and Concrete Office.
Learning chinese to tell time in class room.
4k00:24Learning chinese to tell time in class room.
Digitally generated of math formulas on blackboard
4k00:15Digitally generated of math formulas on blackboard
Food Truck owner opening for business
4k00:20Food Truck owner opening for business
the hand writes on the blackboard a formula / the solution to the equation on the Board
hd00:15the hand writes on the blackboard a formula / the solution to the equation on the Board
Female Developer with Tablet Computer Talks With Programer and Project Manager, They use Blackboard Wall as a Planner. They Work in the Stylish Creative Office. Shot on RED EPIC-W 8K Helium Camera.
4k00:13Female Developer with Tablet Computer Talks With Programer and Project Manager, They use Blackboard Wall as a Planner. They Work in the Stylish Creative Office. Shot on RED EPIC-W 8K Helium Camera.
Young people and education. Group of hispanic students in class at school during lesson. Teacher writing on blackboard
4k00:13Young people and education. Group of hispanic students in class at school during lesson. Teacher writing on blackboard
Chalk writing - ? on chalkboard
hd00:07Chalk writing - ? on chalkboard
Time-Lapse of the Brilliant Young Mathematician Writing Formula on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:14Time-Lapse of the Brilliant Young Mathematician Writing Formula on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Male teenager trying to solve math equation at high school blackboard
hd00:26Male teenager trying to solve math equation at high school blackboard
Back to school. Car delivering books and apple against school blackboard with education symbols. Seamlessly looped 4k animation.
4k00:08Back to school. Car delivering books and apple against school blackboard with education symbols. Seamlessly looped 4k animation.
Simple chalk shapes on school blackboard. Short stop motion loop.
4k00:05Simple chalk shapes on school blackboard. Short stop motion loop.
Diverse Team of Young Developers Draw Work Plan on a Blackboard Wall, Have Heated Discussion. Creative Office Space with Stylishly Dressed People. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:15Diverse Team of Young Developers Draw Work Plan on a Blackboard Wall, Have Heated Discussion. Creative Office Space with Stylishly Dressed People. Shot on RED EPIC-W 8K Helium Cinema Camera.
Little schoolboy in white shirt and eyeglasses standing against blackboard with animated chalk drawings of question marks, rubbing his chin and thinking about something
4k00:08Little schoolboy in white shirt and eyeglasses standing against blackboard with animated chalk drawings of question marks, rubbing his chin and thinking about something
Handwritten mathematics formulas flying from chalkboard towards camera, seamlessly looping
hd00:37Handwritten mathematics formulas flying from chalkboard towards camera, seamlessly looping
4K Happy little scientist with fake mustache writing math formulas on blackboard
4k00:134K Happy little scientist with fake mustache writing math formulas on blackboard
Happy smiling professor, scientist, or math genius looking directly at the camera standing in front of a blackboard
4k00:08Happy smiling professor, scientist, or math genius looking directly at the camera standing in front of a blackboard
Drawing a question mark transformed into a light bulb. Concept of idea coming from thinking. Motion stop style like with chalk on a blackboard.
4k00:10Drawing a question mark transformed into a light bulb. Concept of idea coming from thinking. Motion stop style like with chalk on a blackboard.
School teacher changing word Impossible to Possible on blackboard
4k00:35School teacher changing word Impossible to Possible on blackboard
School classroom with desks and blackboard
4k00:10School classroom with desks and blackboard
Yes or No decision making - choosing YES on chalkboard
4k00:06 Yes or No decision making - choosing YES on chalkboard
Background shot of blackboard with scientific and algebraic formulas and graphs written on it in graphics. Business concept - sketch with schemes and graphs on chalkboard. 3D Graphics cartoon formula
4k00:05Background shot of blackboard with scientific and algebraic formulas and graphs written on it in graphics. Business concept - sketch with schemes and graphs on chalkboard. 3D Graphics cartoon formula
A charismatic old teacher laughing near the blackboard 4K
4k00:16A charismatic old teacher laughing near the blackboard 4K
Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Class of Multi Ethnic Students. Modern University with Bright Young People in the Lecture Hall. 4K UHD.
4k00:08Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Class of Multi Ethnic Students. Modern University with Bright Young People in the Lecture Hall. 4K UHD.
Congrats Text Alpha Channel
hd00:10Congrats Text Alpha Channel
4K Businessman making video call on computer in trendy creative office. Young fun startup company. Shot on RED Epic.
4k00:304K Businessman making video call on computer in trendy creative office. Young fun startup company. Shot on RED Epic.
chalk draw question mark sign animation on blackboard background seamless loop \ new dynamic joyful video footage
hd00:10chalk draw question mark sign animation on blackboard background seamless loop \ new dynamic joyful video footage
Toothless little girl learns math with female teacher while writing on the blackboard and smiling at the camera, shot in 4k resolution
4k00:37Toothless little girl learns math with female teacher while writing on the blackboard and smiling at the camera, shot in 4k resolution
4k front view of classroom of African students , in a lesson, writing English language notes in school books.
4k00:154k front view of classroom of African students , in a lesson, writing English language notes in school books.
4K Portrait smiling man in white coat writing math formulas on blackboard Dec 2016-UK
4k00:184K Portrait smiling man in white coat writing math formulas on blackboard Dec 2016-UK
Young people and education. Group of hispanic students in class at school during lesson. Portrait of happy latina girl, hispanic student smiling at camera
4k00:12Young people and education. Group of hispanic students in class at school during lesson. Portrait of happy latina girl, hispanic student smiling at camera
Old senior woman teacher with serious attitude posing in front of chalkboard. Charming mature woman with arms on her waist looking at camera . 4k
4k00:20Old senior woman teacher with serious attitude posing in front of chalkboard. Charming mature woman with arms on her waist looking at camera . 4k
AA reproduction of an old classroom
hd00:13AA reproduction of an old classroom
School's out for summer - or maybe fall break, winter vacation or spring break. The desks sit abandoned while students are out of school on hiatus. Handheld shot drifts over the empty desks.
4k00:06School's out for summer - or maybe fall break, winter vacation or spring break. The desks sit abandoned while students are out of school on hiatus. Handheld shot drifts over the empty desks.
4K Portrait of thinking woman sitting in front of blackboard with math formulas
4k00:174K Portrait of thinking woman sitting in front of blackboard with math formulas
Teacher is writing letter of alphabet on blackboard with chalk. Education in elementary school concept.
4k00:10Teacher is writing letter of alphabet on blackboard with chalk. Education in elementary school concept.
4K Young business group working & brainstorming in trendy creative office. Young fun startup company. Shot on RED Epic.
4k00:304K Young business group working & brainstorming in trendy creative office. Young fun startup company. Shot on RED Epic.
Personal Computer with Mock-up Green Screen Monitor Stands on the Office Desk. In the Background Man Works in the Creative Office at Daytime
4k00:14Personal Computer with Mock-up Green Screen Monitor Stands on the Office Desk. In the Background Man Works in the Creative Office at Daytime
School class, empty. Slider equipment used
4k00:31 School class, empty. Slider equipment used
Brilliant Young Mathematician Approaches Big Blackboard and Finishes writing Formula, Turns Around and Smiles on Camera. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:15Brilliant Young Mathematician Approaches Big Blackboard and Finishes writing Formula, Turns Around and Smiles on Camera. Shot on RED EPIC-W 8K Helium Cinema Camera.
animated question mark, black chalk section, ideal for compositing, use as a mask, ideal footage to represent the idea concept
4k00:09animated question mark, black chalk section, ideal for compositing, use as a mask, ideal footage to represent the idea concept
Zoom in On the Creative Entrepreneur Writing and Drawing with Business Success/ Inspirational Words and Pictures on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:13Zoom in On the Creative Entrepreneur Writing and Drawing with Business Success/ Inspirational Words and Pictures on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Stop motion drawing megaphone on black chalkboard. Paper lettering fake news
4k00:11Stop motion drawing megaphone on black chalkboard. Paper lettering fake news
Push in towards blank chalkboard over empty school desks. The elementary school classroom has been abandoned. The campus has been evicted due to bullying, budget cuts, and lowered attendance rates.
4k00:07Push in towards blank chalkboard over empty school desks. The elementary school classroom has been abandoned. The campus has been evicted due to bullying, budget cuts, and lowered attendance rates.
Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Class of Multi Ethnic Students. Modern University with Bright Young People.
4k00:11Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Class of Multi Ethnic Students. Modern University with Bright Young People.
Wooden Chairs in School Classroom
hd00:11Wooden Chairs in School Classroom
High School Students Study Globe During Geography Lesson
hd00:21High School Students Study Globe During Geography Lesson
Woman's hand writing all months from January to December with white chalk on blackboard
4k00:27Woman's hand writing all months from January to December with white chalk on blackboard
Math teacher writing equation or function on blackboard in school classroom. Student doing exercise on chalkboard in university or college. Woman teaching or studying. Close up with camera movement.
4k00:09Math teacher writing equation or function on blackboard in school classroom. Student doing exercise on chalkboard in university or college. Woman teaching or studying. Close up with camera movement.
hand-drawn scribbles transition, doodles and sketch effects with black color pencil on chroma key green screen background, with alpha channel,imagination education child concept
4k00:08hand-drawn scribbles transition, doodles and sketch effects with black color pencil on chroma key green screen background, with alpha channel,imagination education child concept
the hand writes on the blackboard a formula / the solution to the equation on the Board
hd00:08the hand writes on the blackboard a formula / the solution to the equation on the Board
close up portrait of a surgeon or doctor with mask and headset ready for operation in hospital or clinic. The surgeon smiles safe and proud of himself. Concept of medicine, hospitals and doctors, care
4k00:09close up portrait of a surgeon or doctor with mask and headset ready for operation in hospital or clinic. The surgeon smiles safe and proud of himself. Concept of medicine, hospitals and doctors, care
Famous Albert Einstein s equation E=mc2 handwritten on chalkboard or blackboard by teacher or businessman
hd00:12Famous Albert Einstein s equation E=mc2 handwritten on chalkboard or blackboard by teacher or businessman
Math calculations or formulas appearing in chalk on black board, computer generated loopable motion background.
hd01:00Math calculations or formulas appearing in chalk on black board, computer generated loopable motion background.
4K Teacher writing math formulas on blackboard and talking to her class (UK-Oct 2016)
4k00:274K Teacher writing math formulas on blackboard and talking to her class (UK-Oct 2016)
Time-Lapse of the Young Man Drawing on Blackboard Inspirational Keywords for Business Start-up. Colorful Drawings with Bits of Wisdom. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:16Time-Lapse of the Young Man Drawing on Blackboard Inspirational Keywords for Business Start-up. Colorful Drawings with Bits of Wisdom. Shot on RED EPIC-W 8K Helium Cinema Camera.
Brainstorming concept icon, idea on chalkboard.4k size movie
4k01:07Brainstorming concept icon, idea on chalkboard.4k size movie
Shot of empty elementary school classroom
hd00:13Shot of empty elementary school classroom
the hand writes on the blackboard a formula / the solution to the equation on the Board
hd00:16the hand writes on the blackboard a formula / the solution to the equation on the Board
Top Manager and Female Executive Outlining Plan on a Glass Blackboard, Drawing with Market and Using Smartphone while Standing in the Modern Glass and Concrete Office. Shot on RED EPIC-W 8K Helium Cin
4k00:14Top Manager and Female Executive Outlining Plan on a Glass Blackboard, Drawing with Market and Using Smartphone while Standing in the Modern Glass and Concrete Office. Shot on RED EPIC-W 8K Helium Cin
Young female teacher in glasses sitting at a table in the elementary school classroom. School teacher read. School classroom with school desks and blackboard
4k00:11Young female teacher in glasses sitting at a table in the elementary school classroom. School teacher read. School classroom with school desks and blackboard
Food Truck owner writing menu on blackboard
4k00:09Food Truck owner writing menu on blackboard
Street view of a blackboard advertising store sign on sidewalk. Consumers passing adverts on a billboard. Customers attracted to open small business shop.
hd00:11Street view of a blackboard advertising store sign on sidewalk. Consumers passing adverts on a billboard. Customers attracted to open small business shop.
A small group of students look happy and smile while they are working on whiteboards and digital tablets at school.
hd00:18A small group of students look happy and smile while they are working on whiteboards and digital tablets at school.
Close up female hold in hand classic director clear empty black film making clapperboard isolated on yellow orange background studio. Cinematography production concept. Copy space advertising mock up.
hd00:07Close up female hold in hand classic director clear empty black film making clapperboard isolated on yellow orange background studio. Cinematography production concept. Copy space advertising mock up.
Panning shot of empty designer office with chalk drawing and pictures on blackboard, table with laptop, coffee and stuff and cozy interior
4k00:12Panning shot of empty designer office with chalk drawing and pictures on blackboard, table with laptop, coffee and stuff and cozy interior
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