Name: Is Our Universe a Hologram? - Instant Egghead #63
Uploaded: 2017-05-11T00:23:40.000Z
Duration: 2 min 3 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

You and I, and everything around us appear to exist in 3 dimensions.

Up and down, front and back,  left to right.

Many physicists now believe that reality  is not, in fact, three-dimensional.

Instead they think that  the fundamental core of reality

comes written in two-dimensional sheets, like this piece of paper.

In this view our world  is a three dimensional projection

of information that's written on a two-dimensional surface,

Why would anyone think  that reality is two-dimensional

when everything we know  appears in 3 dimensions?

Black holes famously suck in everything around them and never let go.

But what would happen  if you were to throw something

with a lot of information into a black hole?

Physicist know that information can never be lost, only scrambled.

So the information in our book can´t disappear forever

into the black hole,  never to be recovered.

It must still exist somewhere  accesible to us.

Physicists say it´s written on the  so called event horizon of a black hole.

The two-dimensional surface  that defines a point of no return.

Likewise, physicists have proven that events occurring on a two-dimensional sheet

are interchangeable with the description in three dimensions.

Mathematically it's all the same.  Which leaves us to wonder:

Which is real? The three dimensions we observe

or the two dimensional description that makes the math work?

For Scientific American's Instant Egghead, I'm Michael Moyer.

Is is possible for an electron  to be in two places at once?

Or for a cat to be both alive and dead at the same time?

According to quantum mechanics, both scenarios are possible.

And at the heart of this conceptual dilemma lies the wave function.

Subtitles ListPlay Video

Is Our Universe a Hologram? - Instant Egghead #63

insane

description

fundamental

reality