Navigating with Quantum Entanglement

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We often think of quantum mechanics as only affecting only the smallest scales of reality, with classical reality taking over at some intermediate level. But in his 1944 book, What is Life?, the quantum physicist Erwin Schrödinger suggested that “incredibly small groups of atoms, much too small to display exact statistical laws, do play a dominating role in the very orderly and lawful events within a living organism.” Schrodinger was a visionary - and perhaps very specifically in this case. Because it turns out we might need all the weirdness of quantum mechanics to explain birds.
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Hosted by Matt O'Dowd
Written by Dan Garisto & Matt O'Dowd
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[@flyingskyward2153]

I look forward to CERN's large pigeon collider.

[@rationalbelief4451]

🤣🤣😂😂🤣😂

[@edrdnc6706]

Multipurpose: Also use it to test aircraft windows for birdstrike resistances.

[@BigDaddyWes]

Where do they find such large pigeons? Has science gone too far?

[@null-calx]

Pigeons repel

[@Soulthym]

@@BigDaddyWes it is a relativistic effect, when approaching the speed of light, particles with mass get more massive. I guess that also applies to pigeons

[@nickvoelker7180]

I love these videos. They give me that old "I skipped the previous three days, and didn't do the assigned reading" feel.

[@jonbrandre3006]

Ahh, the nostalgia 😂

[@davidt8087]

Man u gen z kids truly were born at the LOWEST point of society, societal joy, gratefulness, happiness, etc

[@janrogpl]

@@davidt8087 What does that have to do with the original comment? 🤔

[@lexiriam]

​@@janrogplmay be a bot to trigger. The context of the comment makes no sense.

[@richardwilliamsiv3778]

So birds have the most advanced heads up display in the known universe.

[@mecha-sheep7674]

I'm sure mantis shrimp have a better one, one way or another.

[@DavyRo]

Yes if its a millennium Falcon

[@jansegal6687]

more aptly named superimposed on their mental image

[@snikrepak]

@Toy alot better than what dumb stuff we do, oh cool, we can see colours! But we can't see the more important wavelengths... Oh and birds can fly, we are stuck on the ground with this useless meat sack filled with useless blood and brittle bones.. we are a failed design.

[@Ebani]

@Toy Idk about being one but if he identifies as one would there be a difference? Personally i identify as an apache military helicopter myself 😉

[@Canadian_Ry]

"... swallows, European especially." I heard that African swallows are non-migratory from a guy who was on some ramparts.

[@clairdeloona]

And they carry coconuts

[@COTU9]

@@clairdeloona I believe these will be unladen swallows.

[@phillipchilds1344]

But does their airspeed velocity affect me their ability to detect magnetic fields?

[@COTU9]

@@phillipchilds1344 uh... hmm I don't kno...

[@bamb8s436]

@@phillipchilds1344 Magnetic fields propagate through spacetime not air specifically so i doubt wind velocity changes anythin for em

[@MrSchrodingersCat01]

Let me rephrase that opening line for ya, Matt. No quantum weirdness required. “Some theories have suggested that birds have iron structures in their beaks, [...] but today we are going to talk about an increasingly favored hypothesis, [...] birds aren’t real.”

[@michaelsommers2356]

Of course they aren't real; they're quite complex.

[@might_e]

@@michaelsommers2356 get out.

[@bujfvjg7222]

Hitchcock was right after all!

[@karlbischof2807]

soupcan pyro

[@skyeworley1442]

@@might_e332 I 99998 p

[@immko]

Feels like we are in the process of "Quantum Mechanics are too small to have any effect on macro world" transforming into "QM is everywhere, all the time".

[@patrickmccurry1563]

The big is just a lot of the small after all.

[@rurarararagi3394]

Wait its all Quantum Mechanics? Always has been.

[@TristanCleveland]

@@patrickmccurry1563 But they're often not even small. If a photon has a wave-length the size of the Earth (which they sometimes do), in a sense they are the size of the Earth.

[@Adraria8]

@@TristanCleveland Yeah when quantum physicists say small they actually mean few degrees of freedom in a micro state system which usually just means small but you of course gave a good counter example

[@MaverickBlue42]

Welp, that's where things have been leaning for the last decade and a half since we realized that plants are far more efficient at converting the sun's energy than classical mechanics should allow for....

[@TheFojar]

4:50 “So they can tell the direction to the nearest pole, but don’t know which pole it is.” So, if the Earth’s magnetic field switched polarity, the birds actually wouldn’t care, or even notice, except for a brief weird period in the middle of the transition.

[@cosmicrider5898]

Well theyve probably lived through one or two flips so its probably and adaptition to the flip. Poor ancient birbs that relied on polarity..

[@patrickmccurry1563]

I don't think the flipping happens suddenly or even within a person's life span let alone a bird's. It would cause some migratory screw ups before things got clear again.

[@nydydn]

@@patrickmccurry1563 interesting thought. I don't know either, but I, and I assume many others, always thought it takes seconds at most.

[@Zinras]

@@nydydn That's probably because flip is a poor word to use, since it implies a fast motion. In reality, it's a very slow process and I think the last study they did on a reversal showed a period of 22.000 years. The short answer is that we don't really know but it's definitely counted in millennia.

[@bujfvjg7222]

@@patrickmccurry1563 things like that are passed on in memory in genes, it's been proven with another example of phobias!

[@colintidwell8902]

As an ornithology student who has been watching this show since the literal beginning I am so happy. This video was made for me....not actually but it feels like it!

[@chrisfrolik4014]

Birds have the cryptochrome browser extension installed

[@matthewluecke3704]

At least no one is suggesting MRI-ing coconuts to see if they have structures allowing them to migrate with the swallows.

[@thegrandimperialist168]

African or European Swallows?

[@Mittencarpentry]

Pretty sure that funding was in the last Omnibus bill.

[@stateoftheart1984]

Can't believe we get this super high quality content for free.

[@SamuelLiJ]

There is a slight inaccuracy when taking about singlet and triplet states. In fact both the singlet state and the triplet state with zero S_z are superpositions of |up, down> and |down, up>. The difference is only in the relative sign between the states. The third state in the "triplet" of states you mentioned is not linearly independent of the first two, so the four states you mentioned don't form a complete basis for the four-dimensional state space of two electron spins. To summarize: Singlet = (|up, down> - |down, up>)/sqrt(2) Triplet = |up, up> or |down, down> or (|up, down> + |down, up>)/sqrt(2)

[@hiZarki]

was looking for this comment. thanks

[@kalokajoe357]

Also, quantum phenomena exists in certain type of biological organisms means nothing it depends on time scales and the average behavior. For instance tunneling occur during photosynthesis but the tunneling occurs back and forth in sufficiently large intervals. It is not certain the role of qm.

[@Morilore]

Now lets argue about which normal order (spins first or index first?) is better so we can fight about which sign (+-) of the M=0 states goes to which S=(0,1) case!

[@IWasAlwaysNeverAnywhere]

Idk what dimensions have to do with it. I thought there were only 2 plus time as far as particles are concerned. Thats ig why "spin" is weird to describe Idk anything tho

[@Morilore]

Although now that I think of it, he could be using a strange version of CSF notation. I'm used to always writing the first spin in CSFs as up, but maybe there's an elegant way to encode s and m simultaneously by relaxing that rule? IDK...

[@maddycarbuncle7567]

"Birds of many a feather using quantum physics to flock together to navigate the hidden lines of a geomagnetic spacetime" - Poetry

[@garethdean6382]

When Russel's teapot turns into an iron kettle, it can call itself black.

[@bujfvjg7222]

if it has an orifice, can we call it a black hole?

[@Dalendrion]

@@bujfvjg7222 We'll have to ask Matt Parker if it is indeed, topologically, a hole. He may of course give a Paker-answer like, "But can you paint a hole black?"

[@piotrd.4850]

Most underrated comment of the year.

[@sydneyweidman2524]

NHL game highlights

[@danhitchcock727]

Sometimes I have no idea what you're talking about but I still end up watching the whole video nodding my head.

[@MrRolnicek]

That quantum photosynthesis is a REALLY interesting one to me. I'd hope to see a full video on that but I don't think there's enough research out there to make a full video.

[@tahamohiuddin7425]

Gives a whole new meaning to a "bird eye's view".

[@gouri200]

Yuppp

[@darksecret965]

I thought it was bird's eye view

[@kianvaziri6939]

finally youtube algorithm is recognizing my need for veteran pigeon content

[@ckacquah]

The visuals keeping getting better!

[@nemethdaniel6384]

Quantum biology is quite fascinating! A few years ago I've heard a lecture about the quantum mechanics of photosynthesis. It seems, that depending on the polarization of the incoming photon, it can get trapped inside a molecule of a leaf, causing some funny effects.

[@NewMessage]

That explains all the birds in the Kurzgesagt vids.... 🤔

[@pizzarickk333]

XD🍬

[@IceFireBlast]

It's a lovely time in space, and you are a quantum goose.

[@wizzpig]

In his 1944 book, "What is life?" the quantum physicist Erwin Schrödinger, suggested that "Baby don't hurt me".

[@LuisSierra42]

What is love?

[@bujfvjg7222]

George Harrison said hello.

[@NitpickingNerd]

Please dont hurt me .... no more

[@sarahmarie_11]

Epic.

[@YvonTripper]

"Baby don't hurt me," says the guy who spent his whole career coming up with quantum cat torturing devices

[@AlxM96]

Even though all these bird puns just fly right over my head, toucan play at this game!

[@AlxM96]

@@unboundcuriosity thanks, here’s an upvote for you as a toucan of my appreciation!

[@Bugside]

If this was reddit there would be a flock of puns in response

[@AlxM96]

@@Bugside you're very right, we're too over quail-ified for being on youtube.

[@SnerkleBurger]

... "and I ran ... I ran so far away ..."

[@AlxM96]

@@SnerkleBurger flock off, that song reference is too ducking good!

[@ravenlord4]

All of a sudden, "bird brain" doesn't seem like quite the insult that is intended to be.

[@Merennulli]

This is more bird-eyed.

[@SnlDrako]

Where I come from it's "chicken mind", no brain mentioned.

[@clocked0]

@@SnlDrako Where does the mind originate O.O

[@SnlDrako]

@@clocked0 From the brain. Quite obviously. There are no naturally occuring minds that we know of without a brain. I'm phrasing like that to avoid the pitfall of AI and when is a sufficiently complex program considered to be a mind, which is a discussion I'm frankly not interested in.

[@clocked0]

@@SnlDrako Fair point. The question was mostly rhetorical though, because the mention of a mind is sufficient enough to imply also the existence of a brain (outside of the context of AI)

[@matthewnardin7304]

@11:46 Thanks for the extra clarification. Many people get the different types of swallows and their characteristics mixed up, which is honestly very understandable. Even back in the early days of England only royalty could afford the kind of education it would take to spot the differences between two similar birds.

[@bvsteez]

Confirmed: Birds aren't real.

[@ristopaasivirta9770]

Up does not exist.

[@leniterfortis4832]

They're simply in a state of superposition where they exist and don't exist at the same time.

[@rwarren58]

My windshield right after a car wash has observed that birds are real and have excellent aim.

[@LuisSierra42]

@@rwarren58 You are getting fooled by the lizard people. Wake up!!

[@innocentbystander3317]

@@rwarren58 Oof. That's a painful comment..

[@JJ-fr2ki]

I have a double CPhil (meaning completed coursework and exams) in a double PhD program, and am over and over again impressed with this channel. O'Dowd and team are careful, accurate and excellent explainers--not the case with other physics populizers. I've learned so much, that I'm putting aside time for 3 days a week of Physics Study in 2021.

[@messyhair42]

That Python reference!

[@ideacastilluminate]

I would think that a mention of the ladened, unladened status may have shed some light on the bio-quantum speculation.

[@microbuilder]

I appreciated its subtlety lol

[@innocentbystander3317]

@@ideacastilluminate No, it's more a reference that African swallows never evolved this trait as they are non-migratory. So, even though they might be able to carry a coconut, it still doesn't answer how a coconut ended up in medieval England. This is Monty Python, it's not rocket science. Do try to keep up with ancient Quantum biology... 🙃

[@devinfaux6987]

@@ideacastilluminate Schroedinger's Swallow: both laden and unladen simultaneously until someone finds a coconut.

[@ideacastilluminate]

@@innocentbystander3317 I will gladly grant you your point but only within the context of paleo-pythonian epistemology. I was, however abiding by the invocation provided by O'Dowd with regard to European Swallows and I will gladly go the heterodox route in sticking with the European Swallow postulation, even if it means the surrender of my Anarcho-Syndicalist Commune membership card. By the way, you are most correct, it's not rocket science, it's Holy Hand Grenade of Antioch science, I'll bet the book of armaments on it! Where is Roger the Shrubber when we need him! He could explain how a coconut ended up in Medieval England 😉

[@londonclassicist]

I first got hooked on this channel from PBS Eons, when they did their ‘crossover episodes’ on abiogenesis and the origin of life. I would love to see PBS Eons’ take on ‘quantum biology’ and cryptochromes!

[@Vasharan]

"First imagine 10 to the power of 31,999, and then multiply that 10 times." Ah, the Cosmic Time Ladder method.

[@arielle1244]

*10^32000* Edit: _I can't totally write it down because the maximum limit of character per KZbin comment are 5,000._

[@aminulhussain2277]

@@arielle1244 Use multiple comments then.

[@maltheopia]

@@aminulhussain2277 You want Arielle to make at least 7 separate posts where the majority of it is 0... why, exactly?

[@aminulhussain2277]

@@maltheopia So it exists.

[@maltheopia]

@@aminulhussain2277 Find a better reason.

[@SCP-5000]

this episode was easily understood by my microtubules.

[@ed_weird]

At 11:00 was just about to comment "what if quantum entanglement has something to do with human consciousness", and then 11:25 happened. Damn.

[@bestonyoutube]

This video brought me to an idea: Could quantum entanglement actually play a key role in most processes in life, for example inside a cell? How the molecular machines work and interact / communicate with each other, like the process of DNA copy?

[@avariceseven9443]

What stands out to me in this video is that All Alone is not all alone.

[@mankind8807]

The bird when it received the medal: “Wtf do I do with this thing? Can I eat it?”

[@kashutosh9132]

Imp ques

[@Scrogan]

We should look deeper by taking an MRI of a pigeon’s head. Wait...

[@cosmicrider5898]

*It took the seed it means it consents.*

[@Handlessuck1]

1 birds confusion for science!

[@w0tch]

Hahaha it will feel like going through a wormhole or something ^^

[@prasadpawar7027]

I had same thought

[@HumblyQuestioning]

What are your interests? Quantum magneto receptors in birds.

[@mikepierson8623]

Personally, I'm looking for someone into entangled electrons in bird eye tissue, but to each their own.

[@tim40gabby25]

@@mikepierson8623 delicious comment. Love it :)

[@jmanj3917]

11:00 That is so cool, no matter how many times I watch this episode.

[@primrosenight3722]

When I was kid. There was a couple of birds every spring came to my Granny's house and made a nest.

[@ComradePhoenix]

Deepak Chopra after watching this video: "So you're saying there's a chance"

[@yuhboi_ratmann]

I keep have to reminding myself throughout this video wasn't posted on April 1st

[@SahilP2648]

Watch some videos on Orc OR theory by Sir Roger Penrose and Stuart Hameroff. There's one podcast of him on the channel Lex Fridman. It will probably blow your mind.

[@paulteti]

Thanks for another outstanding video.

[@jimranlet7363]

Don’t forget that a number of insects, like monarch butterflies, can migrate thousands of miles to a specific location in Mexico, sometimes without ever seeing it before.

[@georgeb.wolffsohn30]

Don't forget butterflies. Monarch butterflies migrate thousands of miles.

[@mobiointeractive]

Since doing my PhD, I've wondered if quantum biology is precisely what provides us with "Free Sway", which is what I call the ability for us to influence our future. Thoughts? Should I write this up as a proper hypothesis? Has somebody else already done it?

[@Kev376]

I had totally forgotten about pbs space time, use to watch it all the time, but even though i'm subscribed and had the bell to all youtube still stopped showing me any videos of theirs for literally years.

[@volkhen0]

The kettle confusion was priceless.

[@ansel_ale]

There's something that's been bugging me lately, light that's far away from us gets redshifted due to the expansion of spacetime, this means that they lose energy as lower frequency photons carry less energy than higher frequency ones, I understand that conservation of energy can be violated due to our universe not being time symmetric so that's not what bugs me (mostly), however photons are massless particles meaning they experience no time but doesn't getting redshifted mean their internal state changes? And wouldn't that count as them experience some form of time?

[@rwarren58]

The Mob will crush me pretty quick but at least you'll get your answer. Redshift is just a term of measurement, therefore no internal state change of a proton. Protons experiencing all time at once is a different animal. I think protons only experience time in the loss of structural integrity as they break down over the googleplex eons toward the end of the universe.

[@BigDaddyWes]

You've got some misconceptions to work through before an explanation would be useful.

[@Games_and_Music]

I'm no physicist, but I think it's mostly dependent on the observer, the shifting does not happen within the light itself. I do wonder about the lifespan of light, i am not convinced that the only limit to light is time/distance, it has energy, which can run out, right? EDIT: And if the energy can run out, then you might see a change in light... full circle.

[@Ricocossa1]

No because the frequency of a photon will also change depending on the observer. The photon has no such thing as a "rest frequency". Photons don't actually "experience" anything at all, but if you're moving close to the speed of light, and in the same direction as the photon, then you will measure a near-zero frequency. Also I don't think it's accurate to say that the frequency of the photon gets "stretched" during its travel through space, although it's a common image that is used. There is a much more pragmatic interpretation: on average, objects that are further away from you are moving away from you at greater and greater speed. So the light they emit is redshifted to a certain amount relative to you. Other observers see different things, and so they might not see the same redshift.

[@nolanwestrich2602]

I don't think the photon's internal state is changing here. The blue photon emitted halfway across the observable universe is still blue, as far as it's concerned. But due to the fact that we're moving at a different velocity from it's place of emission, we observe the photon differently than if we were at the same velocity. Another more concise explanation: redshift happens because of the observer's velocity, not because of anything with the redshifted light.

[@nwickstead]

Quantum biology has been known for ages. GFPs (green fluorescent protein) is a quantum effect, and this could be another great example for more stuff on this

[@ReiHinoSenshi]

Still always epic when listening and you feel him about to say “space time” at the end of the video

[@Tessmage_Tessera]

Quantum entanglement is also the key to communicating across interstellar distances and NOT having it take 20,000 years or whatever.

[@sinisamarovic]

Erwin Schrödinger: "What is life?" Me: "Baby don't hurt me ..."

[@SnerkleBurger]

.... damn you, Pavlov ... XD

[@jorgepeterbarton]

Doesnt that cat say the second line?

[@sinisamarovic]

@@jorgepeterbarton it does ... and doesn't.

[@JimPea]

Ah yes, Cryptochrome, my favourite web browser/bitcoin miner.

[@devinwall7011]

There are a lot of humorous tidbits very subtly delivered in this one. Well played and well delivered!

[@lexiriam]

I'm very lucky my physics teacher taught us quantum mechanics in high school. He would always tell us that he would teach us more than the curriculum because it would help us in the future. Sadly lost too young. He was the key to opening the universe to me through science and mathematics.

[@gazlink1]

"what is life?" Baby don't hurt me.

[@DoDoENT]

Imagine if this episode were produced in collaboration with kurzgesagt (they love drawing birds 🕊)

[@Circulism]

having been on a penrose/hammerhoff kick lately, learning about the theory of microtubules and attempting to read the emperors new mind, I find this fascinating

[@baldurk.1667]

What the heck? Mr. Schulten was my neighbour, back in the days. I took care of his horses! Only to meet him posthum here after having stepped down inexplicable pathes in ...Spacetime!

[@stevensheffey731]

Eagerly awaiting the official announcement, "Marvel has given the role of Magneto to All Alone's descendant", on the next episode of Space Time.

[@cylondorado4582]

“Eric, why are you a pigeon?” “I always was, Charles.”

[@michaeldao2249]

The key to the physics of the future: Time (that is the speed at which time passes) is relative not only to gravity and speed, but more importantly to the size of the observer.

[@kashutosh9132]

Who knows maybe it's true

[@eliotcougar]

- Birds... How do they work?.. - Magnets!.. - Magnets... How do THEY work?.. - I dunno, something quantum...

[@FireHax0rd]

Just got hired for the CIA, and they showed us this video during orientation to quickly get us up-to-speed on how our government drones work. Appreciate the easy-to-access explanations! Makes my job easier

[@TheMunkeeBone]

"An African swallow, maybe -- but not a European swallow, that's my point."

[@kennarajora6532]

but then African Swallows are non migratory.

[@SnerkleBurger]

".... I don't care!" XD

[@edumaker-alexgibson]

@@SnerkleBurger You have to know these things when you're king.

[@TheMunkeeBone]

To anyone that didn't get the references, go watch Monty Python and the Holy Grail. XD

[@Nefville]

I would just like to point out that Schrodinger only did all of this because he lost his wife's cat.

[@jacquelinealbin7712]

Fun fact! Cows also are magnetic! And it's theorized that dogs also can sense the magnetosphere, which is why they go in lil circles before lying down.

[@RME76048]

Great episode with an extra-special Spacetime ending. Kudos, Matt.

[@beaconofwierd1883]

Why does everyone always separate human consciousness from just consciousness? We have no evidence at all to suggest that the consciousness of other animals is different from our own, only that we are able to form more complex thoughts. We would never question the consciousness of a child or someone with a mental disability yet we always separate "human consciousness" from just "consciousness" without any reason to think they are different. If we know how animals are conscious we probably know how humans are.

[@ummerfarooq5383]

Animals can hear the screaming of the dead. Humans and jinns cannot.

[@beaconofwierd1883]

Ummer Farooq So that’s why my cats look terrified and run around all night. I just thought they were playing.

[@Tight_Conduct]

Well said

[@clockup5878]

Why do they always seem to separate humans from animals at all?

[@beaconofwierd1883]

Clock Up Cause GOD COMMANDS IT!

[@intentionally]

"Quantum entanglement in the brain's microtubule proteins as a key ingredient in human consciousness" MY MICROTUBULES ARE BLOWN

[@dhamma58]

just be glad you have tubules and not a bird beak!

[@theleastaction]

Love the quick Holy Grail reference smuggled in at 11:45-46. 😉You guys are the best

[@sjorsvanrijswijk358]

that was the best explanation of scale of large numbers: start at the end and reason back. thanks for that!

[@Crives]

I am just afraid that this will give more substance for the imense amount of quackery about quantum physics being the cure for everything

[@BigDaddyWes]

What do you mean "cure for everything."? Quantum mechanics is like the fundamental processes of sub atomic particles. It literally "is" everything.

[@cosmicrider5898]

@@BigDaddyWes until you go deeper and find what makes quarks.. Then find what make those. Then find... Etc. Everything goes deeper and everything gets bigger.

[@patrickmccurry1563]

Crack pots theorists don't need "substance". We should just nod politely while slowly backing away from such loons.

[@Handlessuck1]

@@cosmicrider5898 Deeper down the rabbit hole.

[@strangerwithscience3597]

@@cosmicrider5898 lol quarks are the end of the rabbit hole. Nothing they break down into that we know of

[@DirkDanckaert]

Even if birds can see the magnetic field, no matter by what mechanism, I still don't understand how they can use that vision to find their way back home from an unfamiliar and unknown starting point. If you dropped me in the middle of a desert with a compass to probe the magnetic field, I couldn't tell which direction was home. I could be in the sahara or the gobi for all I knew.

[@jorgepeterbarton]

Bacause they travel latitudinally so if its that good then travel is basically one dimensional. They dont get dropped anywhere they havent gone. Then use their superior eyes to probably see fifty miles across like being in a plane with a telescope so margin for error, and flock behaviour means the idiot bird probably doesnt have to,, they all just have to think "in trend"

[@kashutosh9132]

I have the same ques

[@nmarbletoe8210]

Apparently birds have a mental map that they constantly update. They never forget where they are on the map, so their compass is useful. This doesn't solve all the questions. Homing abilities seem to be better than even a compass and map can explain, if birds are removed far from their home territory while caged in a magnetic shielded cage etc.

[@jeb_kerm1671]

Maybe if they see earth's magnetic field as being three-dimensional, they can deduce its orientation, remember what its oriented like back home, and move in the direction that maximizes the speed at which the bird perceives a change in the EM field in the direction it needs to go. On short time scales, earth's EM field doesn't change very much, and it IS a 3-d object with a definite "up" and "down" orientation, so it is feasible

[@ItamarMedeiros]

I never realized the Earth’s magnetic field was so weak: I always thought it needed to be strong in order to deflect cosmic rays, our Sun’s radiation and create the ionosphere that protect our atmosphere

[@prabhkang226]

You guys are well well read. Appreciate you guys for sharing this knowledge. Thank you team

[@thingsiplay]

I always say: "Reality only exists in small scale."

[@kenlogsdon7095]

Now, THAT is an interesting comment!

[@XOPOIIIO]

I thought that birds orienting by magnetic field was an established fact even from my childhood. Wait, there were experiments long ago when pigeons was put in chamber with artificial magnetic field and they lost orientation.

[@sammiddleton7663]

I think this is about *how* birds sense the magnetic field not *that* birds sense the magnetic field.

[@_John_P]

What's in question is whether they can actually see the magnetic field and what is the exact physical mechanism behind it. There are also magnetic particles in special neurons in the bird's brain.

[@Dragrath1]

@@_John_P If memory serves the reason the magnetic particle hypothesis isn't as favored is only some birds appear to have those and some of the birds lacking them have also demonstrated magnetoreception. In fact is seems that as a general rule all or most arthropods, mollusks and vertebrates possess magnetoreception of some kind. In fact among vertebrates we are actually the anomaly in being generally unable to perceive magnetic field orientation. birds, fish, "reptiles" most mammals(including other primates), etc. it seems most species are capable of sensing the fields. In fact there is recent experimental evidence showing that around a third of the tested population actually have vestigial magnetoreception i.e. there was brain activity similar to that observed in other mammals with documented magnetoreception by experiments. However we just aren't passed that information to our conscious awareness and the lack of the sense in 2/3 of the study participants suggests the sense appears to being undergoing evolutionary regression or loss. So it seems likely that the last common ancestor of all vertebrates had magnetoreception and the hominid line at some point no longer depended on the sense and so it is currently being selected out of the population. It is a quite interesting result the cryptochrome pathway seems likely to be the original one as the protein is present in most vertebrate genomes birds just have particularly strong expression. If I had to guess I suspect our ancestors got so good at tracking the sky and geography that the sense became redundant and like cave fish no longer needing their eyes natural selection is weeding out the trait. Edit looking into this further I noticed that the bilaterian clades which lack evidence of magnetoreception all are clades with a significant part of their evolutionary history being sessile or slow dispersal organisms and given the shared underlying cryptochrome between magnetoreception confirmed evolutionary clades there is even a decent chance this may go all the way back to the last common ancestor of all or most bilaterians which would put the possible trait acquisition back in the Ediacaran (late Neoprotozoic) if so this would be a quite ancient sense that we are fairly far along in the process of losing.

[@SahilP2648]

@@_John_P I don't think its a visual perception. It's just like the turtles which are born at a specific beach, go back to lay eggs at the same location decades later. It could be similar to frequency tuning of FM radio. They can only go towards the signal as it becomes clearer (the place they were born or places from instinct). But can't go to other places based on this phenomena. Or it could be a 6th sense like smell, touch etc. altogether.

[@_John_P]

@@SahilP2648 The paper discusses the possibility of visual perception of magnetic fields due to the entanglement happening in a protein inside the eye and affecting other chemical processes that ultimately are responsible for sending visual signals to the brain.

[@dracrichards734]

I really loved this episode. Thank you for this. And can't wait for that episode you promised us

[@PrashantMaurice]

Next level Animations unlocked !!

[@mimzim7141]

what is the reason they change between singlet and triplets as a function of time? is that due to thermal fluctuations?

[@Old299dfk]

Fun Fact: We need quantum entanglement for our sense of smell.

[@illuminate_day]

Really how?

[@Old299dfk]

@@illuminate_day Been quite a while since I watched the video explaining it, but if I remember rightly - a particle has to be in two places at the same time for our smell to work, or something like that. Something along the lines of, said particle not being able to permeate whatever part of our nose it needs to. However, it's a controversial theory because we don't actually know how our sense of smell works.

[@nunomaroco583]

Amazing, very interesting microtubulos in the brain, Roger Penrose find it very interesting too, maybe when 2 diferent person have the same idea at the same time, its because they have entangled particles in the brain, all the best from Portugal.

[@Rosahonung]

Yesterday I fell asleep with this channel running in the background the whole night and it gave me the most terrifying nightmares Imaginable!

[@bneusmoimeme3452]

I thought was insulted in my youth. This guy said I had a bird brain. I guess it was a kind of compliment then !?

[@Dragrath1]

Given Corvids and Parrots are among the smartest animals on the planet yes. The old idea that birds were dumb was based on a very mammal centric perspective of biology which missed a lot of key details. In particular mammals and birds evolved their smarts independently so the reason they couldn't find the structures they were looking for was because they evolved differently in the hundreds of millions of years since they shared a last common ancestor. In fact if you account for the differences in biology the underlying network structure of primates shares a number of interesting characteristics not shared with other younger mammalian lineages particularly the evolution of standardized Neuron sizes as opposed to the body scaling sizes seen in other amniotes that is to say primates have cognitively converged to become more birdlike than other mammal groups. Given that primates are one of the earlier groups of placental mammals to split off from their relatives this doesn't seem so surprising if you look at the late Cretaceous early Paleogene anatomy of primate line mammals they were basically occupying the same sorts of niches as squirrels so would have lived in a geometrically more complex environment than most mammals given that any true tree specialists failed to survive the K-Pg extinction leaving only the ground/tree dwelling burrowers and much more recently hominids have developed complex vocalizations and highly complex social dynamics which are also similar selection mechanisms for underlying brain architecture.

[@NeonVisual]

Maybe quantum biology helps give us free will. When we make a choice there is a moment immediately before that in which you haven't decided yet which action to take, so the neural system may be in entangled until that decision is made? We would then have the free will to delay making that choice until a later date, by which time the situation could have changed and you might then make a different choice to the one you thought you may have made before. Thus we're still subject to causality, but we have the choice as to when that decision is made.

[@tkimaginestudio]

Your "free will to delay" is either random or causally inevitable. There is no escape.

[@profdc9501]

Small Error at 7:04, Triplet States are |Up Up>, |Down Down>, and 1/sqrt(2) (|Up Down> + |Down Up>) J=1 Singlet State is 1/sqrt(2) (|Up Down> - |Down Up>) J=0

[@Saki630]

We need more like this. This is a really good video that can be extended indefinitely by detailing more biology+biochemistry+chemistry+Experimentation to give more insight to amazing things that Biology has created which we still do not understand or replicate. TMI: We want magnetovision yesterday!

[@rogerdotlee]

"particularly European Swallows." As opposed to their African brethren? Isn't evolution grand?

[@MarsJenkar]

Well, African swallows are non-migratory, so they might lack those proteins.

[@rogerdotlee]

@@MrWhodatsay They would almost have to be. Otherwise the weight ratios would be all wrong.

[@EebstertheGreat]

14:16 "If protons do not decay, then quantum tunneling will cause the neutron star to collapse into a black hole over an absurdly long timescale of 10^10^20 to 10^10^70 or so years." I love that you felt the need to add "or so" to a range covering 100 quindecillion orders of magnitude. (Also, it doesn't really have to be "years." It could be, as Don Page put it when describing an even longer time, "Planck times, millenia,[sic] or whatever." Any units of remotely reasonable scale will not change the upper or lower bounds.)

[@xyzabc4574]

Thanks for clarifying the type of swallow. Didn't leave me hanging there. 'Preciate it.

[@briansiddon2255]

Finally you focus on a topic that is a UNIVERSAL positioning system.

[@acetate909]

The birds and the bees is a euphemism about erotic entanglement.

[@trustjesusoursavior4179]

I believe that the Quantum Entanglement state is the basic logic memory of two paired particles to perform chemical identity.

[@kashutosh9132]

Maybe true

[@quork8568]

What's your super power? "I got bit by a radioactive pigeon and now I have quantum vision!"

[@nmarbletoe8210]

da's coo

[@joshreyes3624]

This and quantum entanglement communication is a fantastic hypothesis.

[@Salomondrin]

Who dislikes these videos?! I'm serious... who has the balls!? LOL

[@TheYahmez]

Many people dislike to prune their recommended, many people are also philistines.

[@user-jh6kx1fw9h]

Again, I'm proposing that it is bots... Cruising KZbin and upvoting /downvoting to, somehow, make themselves look legit. So, there are thousands and hundreds of thousands of these accounts: botnets in service of marketing companies. When some singer, or whoever, drops a new video which needs to get to trending immediately - they cash in.

[@grokeffer6226]

Entanglement has always seemed sort of "Spooky" to me, as if we aren't just looking at the Universe, but that the Universe is looking at us, too.

[@lathspelz]

Isn't that a funny thought^^

[@setsunaes]

"Spooky action at a distance" It appeared spooky to Einstein too... Are you implying that you're entangled with him?

[@grokeffer6226]

@@setsunaes Well, it's good to know I have something in common with Mr. Einstein, other than our hairstyles. My only current entanglement is with my dog, who seems to be telling me to cook some supper.

[@lathspelz]

@@grokeffer6226 I bet He does want that sweet G in the magenta V

[@fensoxx]

This might be the best episode yet. Because I understood it 😂

[@silasdense4725]

Absolutely fascinating. Thank you.