One can see them with the naked eye.

Bacteria are invisible to the naked eye.

Galaxies, 100 billion of them estimated in the universe.

It would be invisible.

Some stars are hardly visible to the naked eye.

The star is so bright as to be seen with the naked eye.

As we go smaller, here is a human hair.

Minute particles are hardly visible to the naked eye.

Whatever it is, it's not visible to the naked eye.

We cannot necessarily see the star with the naked eye.

So let's start off looking at something rather not so small, something that we can see with our naked eye, and that's a bee.

You can see the stars with your naked eye, and even better through a telescope.

It's still impossible with the naked eye. With binoculars you might be able to glimpse it....

As we go smaller, here is a human hair.

Part of it is that these materials are macroscopic in structure, but they're formed at the nano scale.

Neuroscience is hopeless.

So let's start off looking at something rather not so small something that we can see with our naked eye, and that's a bee.

I can see your eyes.

Looks like meat, tastes like meat.

This is the first object that you can see that has been in a mechanical quantum superposition.

But you can see the difference with the naked eye.

So this is the closest you can get to kind of seeing at least the effects of the dark matter with your naked eye.

And because we no longer need to use sunlight, we have very specialized lights that are made for the operating room.

So here is the tiny creature.

Aim careful and look the devil in the eye.

It's not always a matter of the world moving by too quickly for our eyes to process.

Here's a close up picture well, this is like a regular picture of a water hyacinth.

We cannot necessarily see the star with the naked eye.

His gaze pierces cloud, shadow, earth and flesh.

Sit down and care.

It turned out that Justin was almost certainly not autistic.

And that they could figure it out, that we could sell this stuff to kids.

Oh, no. It melts and he knows it.

Here's a close up picture, or this is actually a regular picture of a water hyacinth, and if you had really, really good vision, with your naked eye, you'd see it about that well.

A person with weak eyes can't see far.

He is blind in one eye.

They have sorts of ingredients that you brush on a piece of chicken or fish, and it turns it to look like beef.

If I want this blue square root to open up slower, so it'll be a little bit narrower, I would scale it down.

That makes sense to all normal people.

Without his glasses, he is as blind as a bat.

Germs are too tiny for our eyes to see.

And eventually, when I started studying Egyptology,

Sir, if I may venture an opinion...

Survey the landscape below.

Today, one will simulate the 16 shots Chuck Mawhinney in 30 seconds.