How Can a Lamp or Globe Float Above Its Base?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How can a lamp or globe float above its base?

The Big Idea

In some shops and homes, a lamp or a globe floats in the air above its base. It seems like magic, but it is really clever engineering. Let's find out how it stays up!

A Magnet Alone Can't

Step one: a magnet alone cannot do it. A magnet alone cannot hold something steady in the air. It would tip over or snap down to the base.

Sensor and Electromagnet

Step two: sensor and electromagnet. Floating displays use an electromagnet in the base and a sensor that checks the object's height many times each second. The sensor keeps watch.

Strong or Weak

Step three: strong or weak. If the object sinks, the electromagnet gets stronger. If it rises, the magnet gets weaker. The object seems to hover.

A Closer Look

Let's take a closer look! A globe floats above the base. A sensor checks its height. The electromagnet changes its strength. The globe stays balanced.

Quick Facts

Quick facts! These displays work only in a narrow range, so the floating object cannot be raised too high. The strength changes many times a second. A sensor does the balancing job. The object seems to hover like magic.

Think Like a Scientist

Now, think like a scientist! Balance a pencil on one finger. Notice how many tiny moves you make to keep it up. The sensor does the same job. Try it with your eyes closed. Share your results with someone you love.

Outro

A floating lamp stays up because a sensor keeps adjusting an electromagnet many times each second. Science is amazing! Keep asking questions! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!