devices that detect or measure physical properties (such as temperature, pressure, light, motion) and convert them into signals that can be read or recorded.

（温度・圧力・光・動きなどの）物理的性質を検知・測定し、読み取りまたは記録できる信号に変換する装置

biological receptors (cells or organs) that respond to environmental stimuli, such as light, sound, or chemical signals.

光・音・化学信号などの外部刺激に反応する生体の受容器（細胞や器官）