The brain has many similar perceptual difficulties, they said, which produce a variety of convincing optical illusions.

Even with their makeshift stage furnishings, however, they had created a surprisingly convincing illusion of a sacred space.

In the end, the sound is a convincing illusion.

But if you look through my eyes right now, you'll see that it's bleeping convincing illusion.

Then Bradley realized that nothing was really moving; only the colors were cycling around the spectrum, to produce this completely convincing illusion of movement.

This can't be the makings of a convincing theatrical illusion - and yet it is.

When played back at a frame rate greater than 10-12 frames per second, a fairly convincing illusion of continuous motion is achieved.

And it is understandable that even scientists, who can visualize their data as a convincing illusion for the first time ever, are thrilled.

When the viewer's head is in a certain position, a different image is seen with each eye, giving a convincing illusion of 3D.

One is a "hypno jewel" that can create convincing illusions and light effects.