We have that card with a little brown hole in it
And what I want you to do is hold it up
and try to cast the shadow on that wall there
Before you do it , we will see what it is
Shadow of the card with hole in it
We see an figure enlarged on the wall
It is not very pronounced but we can actually do see the little hole here
And ofcourse made
My next question for you is
You can have this card
What is that
Its a big hole
Can you tell me what size of hole you can see
Compared to the other one ,
Bigger
Twice the size may be
But still the card is larger than hole
What do you see
Big Hole
The card and the hole is slighly bigger than the previous one
Same thing just larger
Ok what I want you to do
It is approximately the same size as the last
Why dont we compare
Here you go
You were right It is One is bigger than the other
Oh goodness it actually looks about the same
Same size though
I cant believe that it must be the sun playing tricks with my mind
What about here is what I am really going to test you alright .Tell me what is there on that card
It is a triangle
So what do you expect to see on the wall.
A triangle but I wont be surprised to see a circle.
What can you see
A triangle
I am certain
Ok lets have a look
Oh wow
Thats all good for me
It is a circle
I can see a triangle
Well we are not going to see a triangle.
Why not?
Guess everything else has been a circle so it will be a circle
I am sticking to triangle.
Ok
It s a circle
Lets have a look I am interested
Well there you go its a circle
Do you want to compare to one of the others
I l give you the other one.
Oh my goodness I really like this project I am learning something
The sun is definitely playing tricks with my mind.
the sun is deceptive.
Thats great
Why are we seeing circles in all these cards regardless of the shape of the hole.
I really dont know. I would like to know.
When you take away the definition from any kind of shape its a thing its just a round
For example you get a perfect triangle
But it was a pretty decent circle
So you must get to a certain size here it doesnt matter what shape it is
It is just probably
Why is it going to a circle though
The sun looks round doesnt it But I am not sure if it has anything to do with it
The light is going through this little holes
And it is the sun, the sun sort of going through
these holes making the circle of the sun, I dont know
Exactly, you nailed it.
What you were looking at there was the image of the sun
Really?
Ya
The earth and sun is round
The sun is round I guess
The building is round
The building is round is it? No the building is not round.
So what we are seeing is
The projection of the sun
I have never thought about it before
I think you actually know and I think you actually have thought about it before.
But you are not queing the right part of your brain that knows the answer
Yeah. Probably.
There is a part of your brain that knows the answer
Well I did photography at school
And we did pinhole cameras
The hole actually reflects what it is showing
on the wall
So
So you see what you see on the other side
So what s that
So it is a sun
Well there you go.