ELI5: Explain Like I'm 5

3-D film

3-D films are movies that are made to look like you're watching them in real life. They use special cameras and technology to trick your eyes into seeing things that are actually farther away or closer to you than they really are. This creates the illusion of depth, like you could reach out and touch the things on the screen.

When you watch a 3-D movie, you wear special glasses that make each eye see a slightly different image. Your brain then combines these two images to create the illusion of depth. It's like when you look at something with one eye closed and then with the other eye closed - you see it differently each time. The glasses make sure that each eye sees a different image so that your brain can do this trick.

Some people love watching 3-D movies because they feel like they're in the movie themselves. Others don't like it as much because the glasses can be uncomfortable or the effects can give them a headache. But either way, 3-D movies are a really cool way to watch movies that makes them feel like they're right in front of you!