Author Topic: Optical Illusions (Read 4691 times)

Bob · « **on:** August 20, 2004, 08:50:46 PM »

Scroll this page up or down so that the picture is in the middle of your screen. Then cover your LEFT eye, and with your RIGHT eye, look at the X on the LEFT. (So that you're looking past your nose a little bit.) Now very slowly move your head closer or away from the screen, until the dot on the right disappears. Remember, you have to be looking at the X, as you notice the dot disappear.

Bob · « **Reply #1 on:** August 20, 2004, 09:10:04 PM »

Stare intently at the red dot in the center of the left block for about a couple of minutes.

Once you've done this, look over to the center of the right block. It should act weird - by fading out and 'flickering'. If you move your head closer and further from the monitor (while focussing in the center), you should see some interesting interference effects too.

Bob · « **Reply #2 on:** August 20, 2004, 09:11:53 PM »

The lines in this picture below are completely parallel would you believe?

Bob · « **Reply #3 on:** August 20, 2004, 09:13:16 PM »

Look into the centre (white point) and stare for a while. How many colours can you see altogether in the object? You should see a purplish circle... and the 4 rotating 'wings' are tinted green. Make sure you always keep focused on the centre.
Once you've done this, read on...

Are those four wings really green? Amazingly, they are exactly the same colour as the circle inside. Don't believe me? Well try following one of the wings round. You'll see that the colour matches the inner circle perfectly.

Bob · « **Reply #4 on:** August 20, 2004, 09:15:58 PM »

Young lady or old hag?

I think we all know which one I see

:drunk:

Bob · « **Reply #5 on:** August 20, 2004, 09:17:30 PM »

What line is longer;
from a to b, or from b to c?

Amazingly, they're both the same length. :blink:

Bob · « **Reply #6 on:** August 20, 2004, 09:18:44 PM »

The idea is to focus on the dot in the centre and then move your head constantly towards and away from the monitor. You should see the circles rotate spookily!

Bob · « **Reply #7 on:** August 20, 2004, 09:20:29 PM »

At first, there doesn't seem anything unusual about this picture. I mean, it's just a bunch of diagonal lines and a slightly distorted square in the middle - right? Wrong.
Believe it or not, the 4 lines that make up the square are actually perfectly straight. In fact it /is/ a perfect square. For proof of this, the animation will swap between the two frames so you can see the square remains the same.

Bob · « **Reply #8 on:** August 20, 2004, 09:21:16 PM »

It already looks quite 'wavy', but try slowly moving the mouse cursor up and down the center of the image - and focus on the cursor. You should see the picture 'waving' in an incredible way.

Bob · « **Reply #9 on:** August 20, 2004, 09:23:05 PM »

This one needs no explanation.

Bob · « **Reply #10 on:** August 20, 2004, 09:26:51 PM »

Some people see a cute girl, I see my future wife.

Jami · « **Reply #11 on:** August 20, 2004, 10:52:55 PM »

They were all good, except that last one. I don't see your future wife, I just see a girl. Hmm..

Bob · « **Reply #12 on:** August 21, 2004, 02:58:30 PM »

Odd, that's my favorite one.

Jami · « **Reply #13 on:** August 21, 2004, 04:26:38 PM »

Figures. <_<