💡🔢📐

#luminous flux #unit #photometry

⭐☛⭐

#eclipsing binary #binary star #light curve #stellar eclipse #photometry

💡📏L

#lambert unit #luminance #photometry #light measurement #johann heinrich lambert

💡/m²

#illuminance #lux #lumens per square meter #light intensity #light unit #photometry #light measurement

💡🔢

#illuminance #light measurement #lux meter #light level #brightness #photometry #quantifying light

🔬💡📐

#CIE #light measurement #photometry #radiometry #illumination science #light metrology #technical committee

🏛️🌈📄

#CIE #color science #lighting standards #illumination standards #photometry #colorimetry #official standards body

🔦➡️👁️

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