Revolving door

A revolving door is a special kind of door that spins around in a circle when someone pushes it. It's kind of like a merry-go-round or a carousel!

When you walk up to a revolving door, you will see that there are usually three or four sections that make up the door. As you push on one of the sections to enter, the whole door will begin to spin around. This helps to keep the air inside a building from escaping every time the door is opened, like when you open a regular door on a windy day and all of the leaves blow around.

Revolving doors are also helpful for busy areas where lots of people are coming in and out all of the time. This is because multiple people can enter or exit the building at the same time, without having to stop and wait for someone else to go first. It's kind of like walking around in a circle with your friends, everyone gets a turn to go first!

Some revolving doors also have special features, like sensors that can tell when someone is about to enter so that it starts spinning automatically. Others have safety features to prevent people from getting trapped inside or squished by the door. So, always make sure to use a revolving door carefully and follow any safety guidelines that are posted.