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Book 28, Question 117 · Video

How do smart balls track their own movement?

Video · 1:48 · Crafty Clover explains, from A Million Whys Book 28

Some balls have tiny sensors inside that measure motion. An accelerometer feels speed changes, and a gyroscope senses spinning. A small chip sends this data wirelessly to a phone or computer. Coaches can see how fast the ball spun, its speed, and when it was kicked. Some soccer balls have sensors that help officials check whether a player was offside.

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How do smart balls track their own movement?

The Big Idea

Some balls know how they're moving! They're called smart balls. How do they work?

Tiny Sensors

Step one: Tiny Sensors. Some balls have tiny sensors inside that measure motion. An accelerometer feels speed changes, and a gyroscope senses spinning.

Sending Data

Step two: Sending Data. A small chip sends this data wirelessly to a phone or computer. Coaches can see how fast the ball spun, its speed, and when it was kicked.

Helping Officials

Step three: Helping Officials. Some soccer balls have sensors that help officials check whether a player was offside. That helps make calls fair.

A Closer Look

Let's take a closer look! Speed changes. Spinning. Sends data. For coaches.

Quick Facts

Quick facts! The sensor is built so that you can't feel it when kicking. Sensors measure motion. Data goes wireless. Helps check offside.

Think Like a Scientist

Now, think like a scientist! With a grown-up, find a phone. Open a motion sensor app. Move the phone gently. Watch the numbers change. What happens when you spin it?

Outro

Smart balls have tiny sensors inside, like accelerometers that feel speed changes and gyroscopes that sense spin. A chip sends data wirelessly so coaches can see speed and spin, and some help officials check offside. Engineers keep making these sensors smaller, lighter, and tougher so they can survive many hard kicks. Science is amazing! Keep wondering and keep exploring! Share what you learned with someone at home, and see what they think! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this