Mass-Energy Equation on blackboard in classroom

---

Size: 5616px × 3744px
Location: India
Photo credit: © SD / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: =mc2, alphabet, blackboard, board, chalk, childhood, class, classroom, close, color, communication, concepts, drawn, education, energy, equal, equation, equations, equivalence, figure, formula, genius, green, handwriting, horizontal, ideas, image, images-free, indoors, intelligence, learning, lecture, lesson, literacy, mass, mass-energy, mass–energy, message, metaphor, people, photography, physics, relativity, school, science, scientific, secondary, studying, written