board, school, university, research, teaching, professor, teacher, analysis, student, mathematics
Public Domain
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Photo keywords
- board
- school
- university
- research
- teaching
- professor
- teacher
- analysis
- student
- mathematics
- physics
- formula
- chalk
- slate
- smeared
- thinking
- think
- size
- property
- volume
- blackboard
- one person
- indoors
- standing
- education
- full length
- men
- learning
- adult
- communication
- text
- chalk - art equipment
- casual clothing
- rear view
- young adult
- solution
- complexity
PC(720P, 1080P, 2K, 4K):
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- 2880x1800
- 2560x1600
Mobile(iPhone, Android):
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- 480x854
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- 320x480
Tablet(iPad, Android):
Download Original Photo (4K)
Photo Info
- image size 5117x3411px
- file size 785.89KB
- Mime type Image/jpeg
- resolution 4K
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