And what I want you to do is hold it up and try to cast a shadow on that wall there.

And I want you before you do it to predict what we're gonna see.

The shadow of the car holding.

We'll see that figure enlarged on the wall.

It's not very pronounced, but you can actually do see the little hole in it And of course, may cool.

Oh, my next question for you is we have this card.

What's that like?

It's a big a ho.

Can you tell me what size circle we're gonna see?

But compared to the other one bigger, twice the size money.

But still the card with a larger at home.

What do you see?

Bigger hole, the card and the whole slightly bigger than the previous one.

And the same thing?

Just larger.

Okay, what I want you to do, it's approximately the same size as the last.

Why don't we compare it?

Here you go, Rod.

It is ones just fine to the other Goodness.

It actually looks about the same size hole.

My complex that it's must be the sun playing tricks with my mind.

What about here Is really gonna test you, right?

Tell me about what's on that card before you put it up.

Trying.

Yeah.

Okay.

So what do you expect that we'll see on the wall triangle?

But I wouldn't be surprising.

Was the circle What are we going to see your triangle?

I'm suddenly.

Okay.

Let's have a look.

Oh, wow.

That's awkward for May.

It's a cynical.

It'll be a triangle.

Well, we're not gonna see a triangle.

Everything else has been a circle, so it'll be a circle.

I'm sticking to triangle.

Okay, cycle.

Let's have a look.

I'm interested.

What?

They go, It's circle.

You wanna compare it to the one of the others?

I'll give you the Oh, my goodness.

I really like this project.

I'm learning something.

The sun is definitely playing tricks.

My mind.

The sun is deceptive.

Why?

Why are we seeing circles with all these cards?

Regardless of the shape of the hole?

I really don't know.

I'd like to know.

When you take away the definition for many kind of shape, it ends up being just around two hours There, for example, you get a perfect triangle.

It was a pretty decent.

So it must be You must get to a certain size here.

Doesn't matter that what what shape it is, It's just turned back.

Probably.

Why is it going to a circle that you'll get the son of look sit around?

So I'm not sure if that's got anything to do with it.

Well, the light is going through these little holes and it is the sun.

The sun rise.

Just sort of going through the pseudo holes making cycle of the sun.

I don't know.

You tell me exactly.

You know what we're looking at?

There is actually an image of the sun.

Yeah, that's round in the sun's round sons round.

I guess things grand buildings around, is it?

So what we're seeing is the projection of the sun.

I've never thought about it before.

I think that you actually know, and I think you have actually thought about it.

But you're not queuing that right part of your brain that knows the answer.

Yeah, probably.

There's a part of your brain that knows the answer.

Well, I did photography at school.

Um I mean, did pinhole cameras the whole actually reflects what it's showing on the wall.

So So you see what you see on the other side.

What's that?

It's a son.

Well, they go something today, Derek.