Nature's INVISIBLE canvas.

"You can find magic in places you never thought to look."

For millions of years
many of earth's creatures have seen some of Mother Nature's invisible (to us) canvas

Polarization
Ultraviolet
Spectroscopic
color
Magnetic field
Electric field
Sound images
Bees
Birds
Many insects
Birds
Birds
Bacteria
Sharks
Bats
Cetaceans

Oregonians for Rationality  booth at Da Vinci Days 2004

Polarization
Discover
the bee's magic
.
Look through the polarizer at the sky -- and rotate the disc.
locate the sun from any patch of blue sky.

And discover Heidinger's brushes!
They've always been there but few ever see them.
Ultraviolet
Birds see something no human can see
(without modern instruments plus a little math)

but we can discover much about the invisible world of infinity-color

Finda way to use the diffraction grating to see the spectrum of light.
High dimension color
Birds see something that humans must use
math to understand
 Look at the computer  (or TV) screen with a strong magnifier.

Where are the white dots?
A color screen for birds would have at least four different colors of dots...and one of them would be ultraviolet...invisible to us!

Look at the world through the two purple filters.
Same color but one is much darker
One filter exagerates color differences.
.
One filter wipes out color differences.

Whatis color?
Magnetic field
Some birds & some bacteria
navigate by the earth's magnetic field
Electric field
Sharks
perceive weak electric fields.
What do they know from that perception?
?
Sound images
Bats, whales, and porpoises
can see shapes in the dark with sound waves.

What do they "see"?
How can we know
?
But only human beings can see the mathematical pattern 
that these two make-a-cube puzzles have in common
.
......................Simple...but subtle
Click on the puzzles to give them a try.
Look for the invisible canvas at Da Vinci Days 2004
Oregonians for Rationality booth
 
 
 
 
 
 
 

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