About Writing with Lights - 关于用光来写字

Normally when you take a picture, the camera shutter opens and closes really fast.

But we wanted to write in the air using lights.  First we turned off all the lights so the room was dark.  Then we set the camera so it would take a picture for a few seconds.  Then I took a phone flashlight and when the camera started, I drew in the air.

Here are some writing-with-lights photos that we took:

I was trying to write my name but it was too hard to do.

I chose a good shape to draw.

It looks like I'm using my magic wand.