Naked Science Forum

On the Lighter Side => That CAN'T be true! => Topic started by: realmswalker on 28/05/2005 23:45:51

Title: AGH this is confusing
Post by: realmswalker on 28/05/2005 23:45:51

http://www.ebaumsworld.com/trigrid.html
can anyone explain that to me?
added up the area of the individual peices = 32
but doing 1/2(hb) the top triangle has an area of 32.5 or IM SO CONFUSED

Title: Re: AGH this is confusing
Post by: chimera on 29/05/2005 00:12:35

The diagonal on the bottom one only LOOKS straight. Take a close peek.

The living are the dead on holiday.  -- Maurice de Maeterlinck (1862-1949)

Title: Re: AGH this is confusing
Post by: Ultima on 29/05/2005 00:50:18

Yeah the triangles don't have the same angles as each other. I can’t find my calculator at the mo... So I can't do cos-1 because im to retarded. They use a big thick line to trick your eye. It's not even a puzzle it's just how you can arrange them???

wOw the world spins?

Title: Re: AGH this is confusing
Post by: chimera on 29/05/2005 00:52:11

Sneaky eh? One is slightly concave, the other slightly convex.

Well, it's not as if you can always trust the eye, check this one for instance:

http://www.grand-illusions.com/images/shades%20illusion.jpg

The living are the dead on holiday.  -- Maurice de Maeterlinck (1862-1949)

Title: Re: AGH this is confusing
Post by: DoctorBeaver on 30/05/2005 23:41:00

quote:

---

http://www.grand-illusions.com/images/shades%20illusion.jpg

---

That's out of order. I've already imbibed copious quantities of booze & you do that to me!

Title: Re: AGH this is confusing
Post by: chimera on 31/05/2005 13:19:22

And without as much as batting an eye. True cruelty, I know.

More?

The living are the dead on holiday.  -- Maurice de Maeterlinck (1862-1949)

Title: Re: AGH this is confusing
Post by: Ultima on 31/05/2005 13:29:09

chimera yeah that’s a good one, although if you use your peripheral vision it doesn't work?? Spose your brain doesn’t try and fill in detail then.

wOw the world spins?

Title: Re: AGH this is confusing
Post by: DoctorBeaver on 31/05/2005 13:40:13

OK, I'm ready now [8D]

Title: Re: AGH this is confusing
Post by: chimera on 31/05/2005 14:40:33

Here's Akiyoshi's illusion pages: Not for people with tendencies to have epileptic fits ! (same goes for stroboscopic effects, btw)

http://www.ritsumei.ac.jp/~akitaoka/index-e.html

You'll  see that peripheral vision is quite important, indeed.
The living are the dead on holiday.  -- Maurice de Maeterlinck (1862-1949)