Technology · Topic 40 of 59
Sensors
⭐ MasteredA sensor detects something in the environment, such as light, heat, sound or movement, and sends a signal. Phones and cars use many sensors to understand the world.
💡 Fun fact
Your phone has a sensor that turns the screen off when you hold it to your ear.
All about Sensors
A sensor detects something in the environment, such as light, heat, sound or movement, and sends a signal to a computer. Phones and cars use many sensors.
Sensors make devices respond to the world around them.
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Real-life uses of Sensors
- Turning screens off during calls
- Helping cars detect obstacles
- Monitoring temperature in homes
Frequently asked questions about Sensors
What does a sensor do?
It detects something and sends a signal.
What sensor turns off a phone screen during a call?
A proximity sensor.