💡✨🕯️

#candela #cd unit #luminous intensity #light measurement #SI unit #brightness unit

☀️📐🔆

#luminous intensity #source intensity #solid angle #light measurement #angular intensity #sun brightness #measuring light

💡🔊📶

#luminous intensity #measuring light #intensity level #focused brightness #light level meter #photometer #light intensity scale

🔦➡️👁️

#luminous intensity #directional light #beam intensity #perceived brightness #light perception #photometry #light direction