Some clocks use special energy to keep going. Like how your toy car keeps moving even when you stop pushing it, because it has a spring inside that unwinds slowly and steadily. These clocks have an extra part called a battery, which gives them power for years, so they can count seconds without being connected to anything else.
Examples
- A wall clock in your bedroom keeps ticking every day because it has a battery inside.
- Your watch doesn’t need a wire from the phone to know what time it is.
- Even if you take a digital clock to the moon, it still tells the correct time.
Ask a question
See also
- How Does a Smartphone Recognize Your Face?
- Why Do We Use Passwords for Security?
- Why Do We Use ‘Barcodes’ on Products and How Do They Work?
- How does the latest generation of brain-computer interfaces function?
- How Did the Internet Begin?
Discussion
Recent activity
Categories: Technology · clocks,timekeeping,technology