The Quantum Theory that Connects the Entire Universe

Quantum mechanics is weird and seems a bit...complicated. But understanding it can help us to understand the universe.

Hosted by: Hank Green

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[jacobkhu-oldacc.]

"Why was Heisenberg's wife unsatisfied?"
"Because when he had the time he didn't have the energy and when he had the position he didn't have the momentum."
*Kudos to my quantum professor.*

[Czesnek]

USB is always in a superposition. It will not fit in any USB ports until observed.

[publicserviceannouncements]

Scientist: We have no way of knowing whether or not the cat is dead or al...
Cat: Meow...
Scientist: God damn it!!

[blueridding]

Even if it was a tough episode to write, thanks for taking on tbe challenge. We casual science enthusiasts appreciate the effort you make each day to help light the fire of our minds

[Im-Not-a-Dog]

Muscle Hank’s muscles are always in a superposition of being both flexed and relaxed until observed. When observed, they are always flexed.

[synonymous]

Interesting idea: from the cat's perspective, the outside world is in a superposition of all possible states until the box opens, which itself is a random process.

[DyslexicMitochondria]

Heisenberg and Schrödinger get pulled over for speeding.
The cop asks Heisenberg "Do you know how fast you were going?"


Heisenberg replies, "No, but we know exactly where we are!"


The officer looks at him confused and says "you were going 108 miles per hour!"


Heisenberg throws his arms up and cries, "Great! Now we're lost!"


The officer looks over the car and asks Schrödinger if the two men have anything in the trunk.


"A cat, " Schrödinger replies.


The cop opens the trunk and yells "Hey! This cat is dead."


Schrödinger angrily replies, "Well he is now."

[RangerRuby]

Kudos to the scriptwriter of this episode. That looked hard. Also, good job Hank. This was a hard episode but everyone pulled through.

[LinkinParkForever]

Atom 1: I think i lost an electron!
Atom 2: You Sure?
Atom 1: Yeah i'm positive.


BA DUM CHHH

[TMWriting]

I like the pilot-wave theory on a purely philosophical level. The idea that there’s something binding every single molecule in the universe, something intrinsic to the foundation of reality... that’s really nice to think about.

[kereiltutt]

Einstein called nonlocal effects, also known as quantum entanglement, "spooky action at a distance". Boy was he right.

[Subscriberswithtwovideos-grtk]

It has to be a good day when sci show uploads

[Lunto]

pilot wave theory basically sounds like an LSD trip:

"bro, everything is connected... i can feel the universe inside my body,

[Im-Not-a-Dog]

In Pilot Whale theory, there is both Barnacles and Waves.

[Cythil]

I do not think the spin example really break locality. Is more a faulty perspective. I once describe it as you having one ball in to jars. You know you have one ball and you put it at random in one of the jars. When you look in one of the jar you intently know if the other one contains a ball or not. But no information have really been transferred. There is no signal being sent by the jar you look at.

Of course the weirdness come from the jars being in super potion until you look. So until you look the jars act like they both contain a ball and not. Which allows you do some wired stuff.

[abbieq]

I am sometimes dead and alive at the same time

[mymom]

also cool vid, I love it when you destroy my perception of reality as i know it ☺️

[fighteer]

It's worth noting that the Copenhagen interpretation does not say that superposition violates causality. Although the waveform collapses instantaneously regardless of distance, the _information_ about the states of the electrons must travel at or slower than the speed of light.

Put another way, if scientist A observes electron A, and scientist B observes electron B, neither can know the state of *both electrons* until they transmit that information to each other. Thus causality is preserved even though locality seems to be violated.

[TheArrogantMonk]

Our theories are also “guided by aesthetic and pragmatic choices”

I love you, SciShow. This is such a simple yet effective demonstration of just how foggy the frontier of our exploration of reality really is.

It’s a strange world with stranger questions arising every day.

[ryantwombly]

Good coverage, SciShow. I spent a week-and-a-half researching pilot wave theory, talked with one of the leading physicists in the field for an hour, and the main lesson I came away with was that it's extremely easy to misrepresent quantum mechanical theories.