The fog created an optical illusion.
No, it is not an optical illusion.
Ernst Mach
yap.. its just an optical illusion
All mirages are optical illusions but all optical illusions are not mirages.
OpTiCaL ILlUsIoN WaZ MaDe fOr ArT AnD FoR tHe InJoyMeNt oF thE PeOpLE
This optical illusion was created by web designer Nabuyuki Kayahara in 2003. Which company displayed this illusion which is also called Right Brain vs. the Left Brain challenge is not clear.
Optical illusion challenges will increase sharpness of your brain. Also the increasing visual literacy is also possible through optical illusion challenges.
It is in your question already. An illusion will never be real. If it was real then it would be no illusion. Optical illusions are in a way real. They are real optical illusions. We can however not fake an illusion because the illusion is fake from start.
Bored Panda is a great website which offers a number of different optical illusion pictures. You can also find optical illusion pictures from Yahoo! Images.
NO
The Müller-Lyer illusion is an optical illusion consisting of a stylized arrow.