Da Vinci Notes #37 - Light up What You Want to See

 

Experiment [showing] the dilatation and contraction of the pupil,

from the motion of the sun and other luminaries. In proportion as

the sky is darker the stars appear of larger size, and if you were

to light up the medium these stars would look smaller; and this

difference arises solely from the pupil which dilates and contracts

with the amount of light in the medium which is interposed between

the eye and the luminous body.

 

Let the experiment be made, by placing a candle above your head

at the same time that you look at a star; then gradually lower the

candle till it is on a level with the ray that comes from the star to

the eye, and then you will see the star diminish so much that you

will almost lose sight of it.

 

 

Keith's Ideas:

1. Light up what you want to see, but not yourself.

2. When you think you are smarter than others, you see nothing

    from them.

 

 

Keith To

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