SciShow Talk Show: Henry Reich & Rook the Raven

[@Ghost_Of_SAS]

I really hope Henry is named after his father, who I hope was named after his own father as well. Because "Henry Reich the third" is simply too good.

[@lollersauce914]

Ghost81 I went to college with him and his little brother. When their little sister didn't end up coming to the same school we all lamented that the third reich didn't end up happening.

[@Ghost_Of_SAS]

lollersauce914 LOL! made my day

[@JustThomas1]

Ghost81 one of my math teachers was named James Edward Murray the 3rd ( and his son is the 4th )

[@hunterclark3923]

Ghost81 ... Henry the third Reich

[@magnuspeacock5857]

@@hunterclark3923 no.

[@voyagerabove4034]

I didn't expect to see Rook here with how skittish he'd proven to be on AW's channel. I'm glad Jesse listened when he told her he wanted to go.

[@Ikelae]

Omg.. Rook is so Beautiful...

[@desertdumitran]

That was a good one. I liked the questions the minute physics guy asked about the Raven.

[@codzomz]

Fun fact, helicopter cyclic sticks are designed to auto corrected to account for gyroscopic precession, so when u push the cyclic forward to move the blade forward, you actually moving the blade to the left, and through gyro precession, the blade noses forward, not left... Pretty cool...

[@mikeissweet]

Nice explanation about the bike; very clever. This is the best animal so far

[@ShesAaRebel]

I'm so proud of Rook for coming out and doing this segment! Even though it was short, I know that he has been slowly adjusting to being handled (from watching Animal Wonders).

[@gildedbear5355]

Such a beautiful bird Rook is, also huge, not to mention brave, sitting between those two unknown talky humans. So glad that he's doing better and coming along, so much process since we last saw him over on Animal Wonders.

[@Gilgwathir]

What Rook experiences with trying to fly, is pretty similar to me trying to date :P.

[@VeggieNatureGirl]

I LOVE Ravens! They are one of my favorite birds! So cool to learn about using glued on feathers in replacement of ones that haven't grown in yet!

[@redwolfjoy]

Jessie is so cute with the two different colored socks. I am glad she is taking care of Rook. He seems to be a very smart bird.

[@mdhebert]

What a great episode. Three very cool people doing conversation right. :)

[@syntacticalcrab]

I

[@AidanRatnage]

You forgot to mention that Jessi does SciShow Kids.

[@SciShow]

Aidan Ratnage Yeah! Thank you!

[@AidanRatnage]

SciShow wow my comment's getting a lot of likes.

[@dwiranu5394]

Rake angle and stability. Nice raven and ...... nice socks Jessi.

[@SpawnofHastur]

"Ravens are /very/ intelligent" *bird tries to fly, falls of her arm and is held upside down*. I know that that doesn't mean that he's an unintelligent bird, but the juxtaposition is amusing.

[@PinkChucky15]

Three of my favorite people + a really cool animal = Awesome show :-D

[@889marlo]

Best wishes for Rook!

[@Meb8Rappa]

So that's why Destin from Smarter Every Day had such a difficult time riding that reverse bike... fascinating!

[@ghuegel]

Meb8Rappa I've been wondering if his reverse bike would be stable on its own... I think it would be... which would make it even stranger that you couldn't ride it, but it could ride fine without you.

[@JustThomas1]

Dave Power #6 i think it would act the same without intervention .

[@jaytea2638]

Dave Power #6 I guess it would be stable too. The thing that makes it unstable is probably not the reverse handle itself but the human that also tries to compensate any leaning. The reason you can not ride it i guess is that you don't get to a big enough velocity for that effect to really kick in. Just try riding your bike hands free from the start, it won't work.

[@ghuegel]

jaytea_org Well then we have a dangerous experiment to try! Put someone on a reverse bike and push them up to speed while keeping them balanced. When they're going fast enough, let them go and see how quickly they crash.

[@jaytea2638]

Dave Power #6 that sounds like a great idea! We should ask Destin about this!

[@ourempire13]

We had a pet raven when I lived in hampton he was so fun he could talk and loved chicken livers and he would tease our cats by calling them over and once they got close enough he would squawk and lift his wings and scare them

[@009a2]

invite Destin from SmarterEveryDay next please! :D

[@SciShow]

009a2 We adore Destin! He lives on the other side of the country from us and is very busy, so this probably won't happen soon, but a dream guest for sure.

[@voyagerabove4034]

the thing i want to know is, if we don't know exactly why bikes stay up, how did we discover that they do?

[@syntacticalcrab]

+VoyagerAbove Because people will try stupid shit until something works. Innovation!

[@MaryAnnNytowl]

Wow, Rook has adapted pretty darned well, anyway! As for prosthetics, I had a young turkey that we had to amputate her lower leg. We had a prosthetic lower leg and foot for her, and she was beginning to adapt to it. Sadly, the cushioning slipped out, it rubbed a hole in her still thin skin there, and she picked up some infection that just went crazy in her. Within about 30 hours, she was gone. She was such a sweetie, and so patient, and it broke my heart, but it does show that it IS possible In some cases. Not a wing, no, but still. 🤷‍♀️

[@estherstrek4796]

I would love it if the team could circle back with the scientists they interviewed over the years. Check in on their progress and new projects!

[@theeutecticpoint]

Oh! He's the "Henry" that Mr. Grey and Mr. Haran keep talking about on Hello Internet, yes?

[@zackmorrison470]

So Henry mentioned the connection between the bike leaning and it self correcting, but didn't mention/discuss the fact that the tire is rounded which means that as it leans, the bike is moving on a progressively smaller radius (to a point) as it leans, which allows the wheel to rotate slightly faster as well as redirect the mass and momentum of the bike. In fairness, I'm watching this 4 years later and I don't recall for sure, but I think I have seen a program (Mythbusters maybe) that addressed the problem of figuring out why bikes self correct, so I can't take credit for the rounded tire insight (though I also can't properly attribute that insight to whoever realized it). I do distinctly remember that they (whoever) tested bikes with rounded tires vs bikes with squared off solid wheels and the squared off wheeled bikes couldn't self correct as their center of mass leaned past the definite edge of the wheel.

[@zapphyeff209]

I love how Hank almost used Emily's exact line from an episode of The Brain Scoop where she talks about the Deer with the compound fracture. She says something like 'whereas I'm like, oh, I've stubbed my toe, that's me done for the day!' It always stuck in my mind even though it's quite an old episode. I guess it must have subconsciously stuck with Hank too >.

[@makennasandidge6864]

2 things: 1) I knew that about bikes because I watched a MinutePhysics (Or maybe it was AsapSCIENCE ) Video. 2) Henry reminds me of my aunt in the way he talks.

[@Tuchulu]

Thanks to this video I subscribed to one minute physics and the channel and content are great, the only thing that gets on my nerves are the "You're wrong" comments. Other than that it's awesome!

[@ArnimSommer]

Next: Henry Reich on recumbents?

[@MicroBlogganism]

So wait? You named one corvid after another species of corvid? :P

[@urmorph]

Sorry you didn't get a chance to show the diamond shape of the raven's tail, which is diagnostic when the bird is flying overhead. (Crows' tails are fan shaped.) Great show, as usual.

[@Satelitko]

He's so beautiful! I love ravens.

[@joshmo1672]

Interesting. Like an NPR segment.

[@merloon]

Next week on SciShow: "Why Hank Had to Wear a Bicycle Helmet."

[@silverharloe]

When you say the gyroscopic effect is insignificantly small in bicycles, does that hold true for motorcycles as well? They have heavier wheels that spin faster, so maybe they have a big enough angular momentum to matter? Or no?

[@InorganicVegan]

Yes, but motorcycles are also heavier, so it gets cancelled...

[@PeterJKeogh]

MinutePhysics, SciShow, the math and physics for why bikes are stable is all there, what you mean is there is no complete set of dynamic equations. However there is another point of contention, that is the bicycle need not be stable but a good controller (a human or computer) can still stabilize the system. good paper from TU Delft: bicycle.tudelft.nl/stablebicycle/StableBicyclev34Revised.pdf

[@jacklandismusic]

Yo! This dude plays mandolin?!? Nice! Same here!

[@icemancad]

Macaw Feathers on a raven! I want to see macaw feathers on a raven!!!!! feather transplants sound amazing!

[@daymeinvines1699]

Hey SciShow, question. Have any of the random mutations caused by radiation been beneficial to an individual organism or species?

[@gigglydookie]

My friend found a jackdaw chick a few weeks ago, it's left leg injured but healed, and he took it in to help it. It couldn't fly and was in a place where it's siblings had been half eaten... it's now at the stage where it's nearly flying, always heading higher, but it's not eating by itself at all. Any advice?

[@Independientefan]

Rook the raven? What next: Dog the mouse?

[@uhohhotdog]

I didn't understand anything about that bike.

[@candlehawk]

orayole Basically, the hinge near the handles (used to steer) is built in such a way, that when the bike goes to fall over, if there is enough speed, the hinge moves in such a way that the wheel is pointed forward, and continues to do so, until there isn't enough momentum for it to continue moving forward.

[@Kassidar]

orayole Very appropriate profile pic for this. Because the tire makes contact with the ground further back than where the pivot points, when the bike leans to one side (say left) then the wheel also turns to the left and because the bike is moving forward and the wheel is not quite pointing in the direction that the bike's forward momentum is pushing it the friction it generates makes the bike lean back in the other direction. This is why you have to be moving for this righting effect to work

[@AnduNinicu]

God i love raves so much , i would want one as a pet !

[@PMW3]

Nevermore.

[@annabellemayes4843]

quoth the raven

[@hogheadv2]

Caster and trailing angle of the wheels... Some of us are pretty good at making frames. Most with engines.

[@williamoldaker5348]

So in the SCA there these thins that are just a Animal headed just wheel bikes sorta like that thing. i think they are called "wheel horse's"

[@squireob]

I'm no bikeologist, but I've observed that bikes do become more stable as they move faster. Conservation of momentum seems to apply to an extent..

[@0MoTheG]

Tim O'Brien It does but only in the sense that the winding path extends to the point it looks like you are going straight.

[@NimN0ms]

I don't really like doing this, but there was definitely something between Henry and Jessi (I know Jessi is married). Also, Rook was huge. Didn't know raven's went that big!

[@daymeinvines1699]

Why is it that sometimes when listening to someone, you have to ask them to repeat themselves multiple times and you still can't focus.

[@I_am_Lauren]

yes, rook is huge!

[@r.b.4611]

Prosthetic wings are a thing?

[@devsev3630]

Can you guys do an episode about why your leg hair turns curly after you break the skin/get a cut

[@rafaelarevalo8047]

Holy shit, ravens are HUGE

[@BeCurieUs]

In planes, we call this effect a phugoid, it isn't for the same reasons, though.

[@ayushgl]

I wish I didn't have to sleep. Same.

[@juststeveschannel]

Henry hinted, hemmed, and hawed more about frame geometry without ever using the terms "rake" and "trail" which I would expect anyone who'd studied the problem to have at hand. These are terms with specific meanings that have long been key to anyone involved in the design of motorcycles and, I would assume, bicycles as well. While we might not understand it perfectly, it's not a completely miraculous mystery that he makes it sound, either. I found it to be kind of a strange discussion, actually. He was like--"It's not that; well, it's partially that, but that's not it. WE DON'T KNOW!"

[@AlthenaLuna]

juststeveschannel Presuming Henry's familiar with the bike-specific terminology, he would then have to define all of it as he brought it up, since the audience isn't guaranteed to understand any of it. Whether or not it's part of his vocabulary, it may have been easier/for the sake of time to forego bike lingo? *shrug* Just a thought.

[@MrConradF]

Socks don't match?

[@AlthenaLuna]

MrConradF So?

[@rhianaeverest0808]

Makes sense now that Claire was hiding the food for some of the other animals

[@JuanGomez-mv1qx]

I would like to work helping wild animals that be cool

[@DrProctor119]

Looks like the raven tries to end things a couple of times. Narly. Maybe Rook should get a job with a Witch?

[@remraft]

heck yeah grinnellians 👍👍

[@ircimager]

bikes staying up has something to do with the center of gravity being in line wth the axles, but i can't explain what it is

[@juvstreet]

why is jessi still called a "special guest" she's in like evey episode

[@chriscummins8325]

Yan Magno That doesn't make her any less special.

[@DTownMalo]

Maybe the animal is what he is calling the special guest

[@chriscummins8325]

DTownMalo well it does say "Special guest Jessi Knudsen Castañeda."

[@kemioldaccount1325]

Christopher Cummins Uh actually yes, it does make her less special... As a guest! A special guest means a guest whos not normally there. Jesse is more of a co-host here. It makes me wonder why she isn't a legitimate co-host actually. But to keep calling her a special guest is pretty disappointing.

[@pellemckruth4070]

bc she is not the special guest...the animal is!

[@yzaelvazquez5446]

Knocking. Knocking on my chamber door.

[@jkennedy299]

That raven made me really sad

[@emiliskelertas2674]

Her socks are diffrent collors :D

[@diegochavez3373]

I wish Jessi took care of me :c haha

[@HorzaPanda]

Corvids are adorable, poor guy. Would have thought he'd mostly get depressed about not being able to fly, but guess that's a hard type of injury to fix in a human, nevermind a bird :X

[@MisterTingles]

i mean, i know they were big, and this one probably wasn't even on the bigger side, but good golly, that's a big old bird. that skull and beak alone is kinda comparable in size to an eagle i'd guess...

[@serj2008]

This readhead is so beautiful!

[@jmomm]

Is Rook in pain?

[@Surgical02]

jmomm Yes

[@egalomon]

jmomm I don't think all the time, but when he tries to fly.. I know someone who has once broke sth in his shoulder, didn't go to a doctor, and it healed (incorrectly though). He doesn't feel pain, but he can't move his arm as flexibly as you could with a healthy shoulder. It only hurts if he tries really hard to overcome the limitation.

[@googleslocik]

jmomm obviously, life is pain

[@nuFsIgnillorT]

jmomm who cares lulz

[@egalomon]

May I say that this is (in my opinion) the episode of SciShow Talk Show that is the hardest-to-understand if your native english tongued human? Which you maybe could tell by this comment already? Like, I feel A LOT smarter now that I know how friggin bikes work, but dude, I had to really concentrate to understand it all...

[@JustThomas1]

Here's the thing. You said a "jackdaw is a crow." Is it in the same family? Yes. No one's arguing that. As someone who is a scientist who studies crows, I am telling you, specifically, in science, no one calls jackdaws crows. If you want to be "specific" like you said, then you shouldn't either. They're not the same thing. If you're saying "crow family" you're referring to the taxonomic grouping of Corvidae, which includes things from nutcrackers to blue jays to ravens. So your reasoning for calling a jackdaw a crow is because random people "call the black ones crows?" Let's get grackles and blackbirds in there, then, too. Also, calling someone a human or an ape? It's not one or the other, that's not how taxonomy works. They're both. A jackdaw is a jackdaw and a member of the crow family. But that's not what you said. You said a jackdaw is a crow, which is not true unless you're okay with calling all members of the crow family crows, which means you'd call blue jays, ravens, and other birds crows, too. Which you said you don't. It's okay to just admit you're wrong, you know? I'm sorry , i couldnt help myself ...

[@AlleyBetwixt]

Awww, poor Rook. Had a crow die in our front yard today. Might be a case of West Nile. I love birds. Very disheartening to see them suffer.

[@nettlescats3796]

Prosthetics, like Toothless the dragon? That would be nice for a domestic creature but way more confusing to a wild animal who already has a lot of weirdness to deal with. Great show:)

[@pauljerles8004]

Has all the water on the earth been urinated back into the system? I worded that horribly......

[@GiladGur]

Does Jessi have one foot with and the other without socks?

[@InvictusByz]

Dark wings, Dark words.

[@wettermann]

Henry showed it wrong. The Fork would turn the other Direction. With weight on the Saddle.

[@catherine_404]

Why didn't they re-broke his wing and mended it?

[@ratatataraxia]

The sexual tension in this video is awesome.

[@3nertia]

Poor Rook :(

[@INMATE2468]

And Rook will fly *Nevermore*

[@InLaymansTerms]

I fear Hank was not using proper helmet safety techniques.

[@JessiNaka]

Is it just me, or does Hank seem kinda tired on SciShow Talk Show?? Is it just that he acts super energized on shorter videos like SciShow? I always feel like the energy is different...not criticizing, just curious!

[@jimboy27]

ye

[@BigBubbles9000]

Hank seems like a layman compared to Henry.

[@Nobody-vr5nl]

I'm not an animal activist but keeping the bird seems cruel. It's like keeping a whale that can't swim and letting him flop around.

[@Mekratrig]

A crow. Why did pretty Jessi have to brig a crow. It should just been put down, the only good crow is a dead one.

[@tobehonest7457]

Who got first?

[@jonatanolsen37]

Is it common that people have corvids at pet? It shouldnt be very different from keeping a parrot?

[@jonatanolsen37]

Jonatan Olsén as pets*

[@leonawroth2516]

Jonatan Olsén You can do it. But it's not even close to a pet like cat. dog etc. There is a video on youtube from someone who has corvids as pets and talks about this. Apparently they live long, because of their behavior with the beak they are destructive and will hurt you. You would need to spend a great deal of your day with them, every day.

[@audrey1053]

She is wearing different sockssssssssss...

[@JulianLloydMarketing]

9 views!

[@keerthanasharma4831]

Henry's cute

[@jumjam234]

MWWW

[@aliomar8525]

yo

[@knirpslyn2107]

A life shackled and clipped is no life at all. Why save animals just to put them in cages on display.

[@ThatAnnoyingBird]

FIRST!

[@Evolutionmine16]

Nope.

[@thelastthymelord1047]

First