Hannah Fry Instagram – I’d obviously be red all over. 😏
#TheSecretGeniusOfModernLife #HannahFry #ModernTechnology #STEM #Demo #Science #Doorbell #Camera #Video #Heat
Hannah Fry takes apart a camera doorbell to show off how it detects heat, which is all thanks to the passive infrared sensors, or PIR. | Posted on 28/Apr/2025 14:21:45
