The 'Special Guest' segment with the animals is totally my favorite bit! I love learning about the awesome animals and the crazy things they do, kind of gives you a whole new respect for them :)
When Hank said the thing about the second hand on a clock I had this rush of "Oh man! That's what that is!" I always thought the effect must be in my head and now, I know it is.
My dad is a falconer which means I got to be around Red Tailed Hawks and Peregrin Falcons growing up. (Btw, you can't just go get a bird. Don't try it. You have to be licensed, and it's a challenging and long process to become licensed.) They really are amazing animals, and no matter how accustomed they become to their, they never stop being dangerous and awe inspiring.
The Scishow talk show once again exceeds my expectations. The stump Hank segment is so interesting. This hawk is awesome, but my favorite is still the alien porcupine from talkshow #4.
I worked with a Harris Hawk one summer at a local zoo. He was a retired falconry bird, so he could actually be called on and off the glove. Made him easier to retrieve and put away for presentation.
I don't see the big deal with admiring people who are doing what they love; I admire people who put up with a crap job they hate to support their family. I admire Hank because he & John built up this youtube empire with very little help for the most part. We also get to experience his personality a lot more as he's in all the videos. I appreciate that he makes these channels. What do you even mean by fire & passion? Sure, she seems to enjoy it, but i'm not getting a 'fire and passion' feel.
how fast we perceive the stream of information (what we see, hear, etc.) actually almost doubles when you go into fight or flight. so time seems to b slowing down since your brains working so fast at that moment. that way u have CRAZY reflexes
this is my favourite SciShow Talk show. 35mm film, eyes, and hawks. too bad they didn't mention anything about the hawk's eyes. but it is cool that the Harris's hawks literally totem pole themselves.
Just for those interested: I read some stuff on the "frames" per second an eye can see a while back. I don't remember the definition of everything, but our eyes sees black and white and other colors at different rates. Humans can perceive upwards of 200 frames per second of black and white, while seeing colors only works at a rate of up to 50 frames per second.
I remember my grandfather telling me about Flicker Fusion Frequency, and how back in the '40s and '50s, some film formats (mostly for home movies) ran at 18 frames/second.
jessie your so pretty and having you on screen adds so much colour to the show........they're doing a good job by getting you in during the latter half
That's true. It was something I thought about bringing up but I had limited time. I found it interesting that Hank said, "I'm comfortable" at 24fps." I find that the higher the frame rate, the more uncomfortable and tense I become because it specifically reminds me of "Fight or Flight" or a panic attack.
the brain is tasked with not only translating the things our eyes pick up but also applying meaning to them, therefore if you play a video with 24 fps you may process all the frames as one fluid motion because all of them are portrayed as such. if even one of those frames shows something goofy or out of place your brain can pick up on that and focus more on it halting the illusion of motion, when seeing someone run our brain makes guesses on where the person will be to help percieve them better
She's beautiful!! I actually knew that Harris's Falks hunt in packs and some of the other stuff because I have seen a documentary about destert animals just a few weeks ago. I'm really proud of myself for remembering all those facts pretty well =)
Hank has actually addressed this multiple times. Both pronunciations are correct. The people who created the .gif file format pronounced it "jif" amongst themselves but have later stated, when this became an issue, that both are considered valid.
Hey Hank the reason the "second hand illusion" occurs is because your eyes are constantly making very small movements, and adjust unconsciously when you move your head, so you don't get blur or anything like that :D
The reason you do not perceive motion of objects if you move your eyes is there is a corollary discharge (a signal) sent from the motor center of the brain when a movement command is sent. If the brain detects movement, but also detects the corollary discharge, it'll perceive no movement because it thinks that the movement is due to you moving your eyes. That's why you get that second hand pause
Not sure if it's been said already, but I was doing some research of Falconry (which is where I first learned about Harris' hawk, sorry sci show) and I found that because of that pack behavior they're actually really good birds for use in falconry. You can even use them with a hunting dog, too, which after watching this makes sense since the dog essentially takes the roll of the 'flusher'.
It depends on brain performance of the human observer at the time. The frame speeds can reach that of highspeed cameras during matrix style "time warps" when u get enough adrenaline rush or enough training.
She's actually not clipped on one wing. She's just molting. Birds typically lose the first feather on one wing and then lose the corresponding feather on the other wing shortly after. This process continues for several weeks until all the new feathers have grown in so the bird can still fly while it molts. The short feather on the left is growing back after dropping the old one. It just hasn't reached its full length yet. The feather on the other wing has probably finished growing out already.
Related: Working at a science camp, one of our projects had my hands on a variable frequency strobe light. Using one of these you can play with the frequency of the flashes and actually see this "frame-rate" effect around 10-20 Hz ("fps"). The "frame-rate" is a bit different for everyone, but when you tune it, it looks like you're seeing light and dark at the same time, and it makes you feel a bit ill. It's 12 Hz for me. Weirdly this is the same range that triggers light-sensitive epilepsy...
It was cool seeing the caretaker turning her palm with the hawk moving its tail up an down accordingly. It felt like her palm and the hawk were like a one connected mechanical device of sorts.
Electrical signals in our nerves work a bit differently than other electrical signals, such as the ones in wires... Even the speeds in wires isn't the speed of light (it's like half or 3/4ths, it really depends on the wire) but the signals in our nerves also varies, mostly depending on if they're myelinated (sp?) or not.. I believe the optic nerves are myelinated, and signals go like 200 mph in myelinated fibers
It's interesting that what we perceive as movement is so low of a number, and yet we can easily detect small differences way beyond the threshold of 'smoothness' (which is 30 fps, I believe.) For example, you want to have your video games running at 60 fps, because small speed changes (due to a scene being more/less complicated) of a couple fps are quite noticeable.
OHMIGOD. THE SECOND HAND THING HAS HAPPENED TO ME AND I'M LIKE "WTF, I KNOW IT'S BEEN THERE LONGER THAN A SECOND, BUT THAT MAKES ME CRAZY. WHY AM I CRAZY?"
I wish there was a place to just learn, share information, and speculate, not criticize or argue. I'm not complaining just putting want in to one hand.
I was taught in my TV systems class that the frame-rate that a human perceives as motion has to do with the speed rate in which the sodium-potassium pump replenish... I can't remember much of that. also, the minimum angle of separation of two dots (or pixels) is 1' (one second) that means two dots separated 1mm from each other, at 3 meters from you. and that is because of the separation of the cells in your macula lutea. (that was hard to write in english)
Woah, okay so I looked up Harris's hawk on wikipedia, and I learned a crazy fact! There are some in London, England, so to help with the pigeon problem around Trafalgar square. Imagine that. So far away from the desert.
Actually, the most dominant bird is generally on the bottom of the stack, as it will not abandon its perch when approached by a subordinate bird. It's a shame Hara wasn't feeling talkative- their screams are something to be admired! I work at a facility that houses one and he makes sure everyone knows if we're late bringing dinner ;)
AHH It's always felt to me like when I look at a clock, the first second is longer than every second after it. Now I know why! And I know that I'm not crazy! Thanks Hank!
2:30 Hank, the propeller going backwards, that only happens in films (very limited fps) and in AC lights because the propeller reflections are not continuous with AC light obviously. But you can't see a propeller go backwards under ambient light ever you only see a transparent disc. Which to me means the brain can process a LOT of fps. Edit: yeah a constant flow as he said.
The GHz of your monitor is what affects this if you have a 60 GHz monitor and you can only get 30 fps you wont have any affect, but if you turn v-sync off on the game you will notice half the screen is shifted left and the other is shifted right because the monitor is getting information faster than your computer can send it
a video camera gathers light for a specific duration, which makes the final frame a blend of a longer data stream. 3D rendered computer images are very brief snapshots, and you therefor notice the lacking information between snapshots, that would have been blended in there if it was a real life video
Only if your eyes are trained for that. You would easily notice the "25'th frame" if it's different from the rest of the visuals, but you probably won't spot a minute fps change.
The prop effect Hank mentions happens on film due to what is called sync rate . It does not actually happen when you watch a P51D Mustang , or C130 Hercules start up , taxi out , and take off. The prop is smooth ..
Thanks! I've done a lot of research in the hopes of having my own bird(s) someday. Right now I'm largely responsible for my parents' flock of six chickens as well. :)
One of the issues with that is it can be different for everyone. For some, 48 fps seems more "real" while for others it can induce a sense of panic because of the amount of information we're getting. For me, I fit into the later, but I have many friends who were overjoyed with the 48 fps of The Hobbit because it felt more like "reality" to them. It could have something to do with conditioning our brains. I grew up with 24 fps film, but maybe they grew up with the high FPS of sports broadcasts.
Harris Hawks use (from what I can tell) two calls, one Content "growl" and an aggressive "yell." Their packs usually have an alpha female, an alpha male, and a beta male and a beta female. When they are hunting the lower ranked birds will flush prey out of a bush, while the higher ranked birds will wait overhead to chase after the prey. After they catch their prey the higher ranked birds will eat the catch first and going down the line of ranks.
The 'Special Guest' segment with the animals is totally my favorite bit! I love learning about the awesome animals and the crazy things they do, kind of gives you a whole new respect for them :)
When Hank said the thing about the second hand on a clock I had this rush of "Oh man! That's what that is!" I always thought the effect must be in my head and now, I know it is.
Hawk: O_O Where's the sky? Where the FUCK IS THE SKY?!?!?!
Jessi is so calm and smooth with all the animals it's awesome!
Best Sci Talk Show so far! Not to put down your previous ones, but this one was the first one that actually felt like a talk show.
I think the scishow talk show is my favorite part of scishow. oodles and oodles of random science stuff. It's awesome!
What a beautiful raptor. Thank goodness for Jesse and all of the critters we get to learn about!!!
Nick should be on sci show more. He seems very professional and educated! This is always neat to meet people 'behind the scenes'.
You could say that hawk is a 'clever girl'.
Sigh no just no -.-
Demi-Fiend of Time I agree
Best Sci Show guest and episode so far. The banter wasn't awkward at all.
the social behavior of those hawks makes me think they should be nicknamed "Wolf Hawks"
it's the enthusiasm and the voice. not to mention glorious information she's got in her head.
I love these, they are my absolute favorite part of scishow
I wanna BE a Harris's Hawk!🥰🥰
My dad is a falconer which means I got to be around Red Tailed Hawks and Peregrin Falcons growing up. (Btw, you can't just go get a bird. Don't try it. You have to be licensed, and it's a challenging and long process to become licensed.) They really are amazing animals, and no matter how accustomed they become to their, they never stop being dangerous and awe inspiring.
The Scishow talk show once again exceeds my expectations. The stump Hank segment is so interesting. This hawk is awesome, but my favorite is still the alien porcupine from talkshow #4.
THE SECONDHAND!!! I'm so happy you explained that! I had always wondered why that happened, and now I know! Yay!
I worked with a Harris Hawk one summer at a local zoo. He was a retired falconry bird, so he could actually be called on and off the glove. Made him easier to retrieve and put away for presentation.
I don't see the big deal with admiring people who are doing what they love; I admire people who put up with a crap job they hate to support their family.
I admire Hank because he & John built up this youtube empire with very little help for the most part. We also get to experience his personality a lot more as he's in all the videos. I appreciate that he makes these channels.
What do you even mean by fire & passion? Sure, she seems to enjoy it, but i'm not getting a 'fire and passion' feel.
This is probably my favorite Sci-Show to date! The brain frame topic was great.
how fast we perceive the stream of information (what we see, hear, etc.) actually almost doubles when you go into fight or flight. so time seems to b slowing down since your brains working so fast at that moment. that way u have CRAZY reflexes
That part about the hawk was really neat. I'd like to see more animals with unique abilities/behaviors.
That was great! I learned so much about the Harris's Hawk! Thanks to Jessi for sharing that cool information!
this is my favourite SciShow Talk show. 35mm film, eyes, and hawks. too bad they didn't mention anything about the hawk's eyes. but it is cool that the Harris's hawks literally totem pole themselves.
The plumage on the hawk is so beautiful~
OMG I have always wondered why second hands stay longer for a second when you first look at them! Thank you!
I love how I still enjoy watching this show even though all I hear is Frames per second, eyes, brain, Hawk...
This bird is breathtakingly beautiful.
As a film maker and bird enthusiast, I found this video amazing.
More of these! Having a discussion with a human rather than the camera is much more interesting! multiple points of thoughts!
Thank you for explaining about the second hand phenomena, I've wondered about that for a long time!
Just for those interested:
I read some stuff on the "frames" per second an eye can see a while back.
I don't remember the definition of everything, but our eyes sees black and white and other colors at different rates.
Humans can perceive upwards of 200 frames per second of black and white, while seeing colors only works at a rate of up to 50 frames per second.
Gotta love Jessie's enthusiasm on every episode.
Oh my goodness... I've wondered about that second hand thing for as long as I can remember! Thanks scishow!
Even aliens can't seem to deny it, nerdfighters are the most awesome people of earth. Cheers, Zogg. Looking forward to another installment
"I must rule with eye and claw-The Hawk amongst lesser birds"~Leto Atreides
I love those animals.
I remember my grandfather telling me about Flicker Fusion Frequency, and how back in the '40s and '50s, some film formats (mostly for home movies) ran at 18 frames/second.
jessie your so pretty and having you on screen adds so much colour to the show........they're doing a good job by getting you in during the latter half
What a good looking bird. That thing with the feathers looks pretty neat too.
That's true. It was something I thought about bringing up but I had limited time. I found it interesting that Hank said, "I'm comfortable" at 24fps." I find that the higher the frame rate, the more uncomfortable and tense I become because it specifically reminds me of "Fight or Flight" or a panic attack.
the brain is tasked with not only translating the things our eyes pick up but also applying meaning to them, therefore if you play a video with 24 fps you may process all the frames as one fluid motion because all of them are portrayed as such. if even one of those frames shows something goofy or out of place your brain can pick up on that and focus more on it halting the illusion of motion, when seeing someone run our brain makes guesses on where the person will be to help percieve them better
Once more thank you for "Talk Show" Hank.
She's beautiful!!
I actually knew that Harris's Falks hunt in packs and some of the other stuff because I have seen a documentary about destert animals just a few weeks ago. I'm really proud of myself for remembering all those facts pretty well =)
Jessi is fearless! If I were holding that hawk when it was flapping around, I probably would have started yelping and flailing my arms. :)
Couldn't think of anything better at 5:30 in the morning.
This is actually one of the most interesting scishow talk shows, surprised to see it so low on the view count.
Hank has actually addressed this multiple times. Both pronunciations are correct. The people who created the .gif file format pronounced it "jif" amongst themselves but have later stated, when this became an issue, that both are considered valid.
I love it when Hank is interested in something somebody says :)
Hey Hank the reason the "second hand illusion" occurs is because your eyes are constantly making very small movements, and adjust unconsciously when you move your head, so you don't get blur or anything like that :D
The reason you do not perceive motion of objects if you move your eyes is there is a corollary discharge (a signal) sent from the motor center of the brain when a movement command is sent. If the brain detects movement, but also detects the corollary discharge, it'll perceive no movement because it thinks that the movement is due to you moving your eyes. That's why you get that second hand pause
This is the most interesting sci show talk show yet!
That is such a beautiful bird, my goodness!
Not sure if it's been said already, but I was doing some research of Falconry (which is where I first learned about Harris' hawk, sorry sci show) and I found that because of that pack behavior they're actually really good birds for use in falconry. You can even use them with a hunting dog, too, which after watching this makes sense since the dog essentially takes the roll of the 'flusher'.
Wow... that's possibly the nicest thing anyone's ever said about me. Heart officially warmed :)
It depends on brain performance of the human observer at the time. The frame speeds can reach that of highspeed cameras during matrix style "time warps" when u get enough adrenaline rush or enough training.
I always thought I was crazy when the second hand stopped... That's pretty cool that it's an actual thing.
She's actually not clipped on one wing. She's just molting. Birds typically lose the first feather on one wing and then lose the corresponding feather on the other wing shortly after. This process continues for several weeks until all the new feathers have grown in so the bird can still fly while it molts.
The short feather on the left is growing back after dropping the old one. It just hasn't reached its full length yet. The feather on the other wing has probably finished growing out already.
Related: Working at a science camp, one of our projects had my hands on a variable frequency strobe light. Using one of these you can play with the frequency of the flashes and actually see this "frame-rate" effect around 10-20 Hz ("fps"). The "frame-rate" is a bit different for everyone, but when you tune it, it looks like you're seeing light and dark at the same time, and it makes you feel a bit ill. It's 12 Hz for me. Weirdly this is the same range that triggers light-sensitive epilepsy...
It was cool seeing the caretaker turning her palm with the hawk moving its tail up an down accordingly. It felt like her palm and the hawk were like a one connected mechanical device of sorts.
Jessi, REALLY cool animal this time (always cool, but especially this bird's behavior).
Thank you.
OHMYGOD! I always wondered about the second hand, and just thought it was an illusion!
Glad I decided to refresh my subscription page at midnight.
Electrical signals in our nerves work a bit differently than other electrical signals, such as the ones in wires... Even the speeds in wires isn't the speed of light (it's like half or 3/4ths, it really depends on the wire) but the signals in our nerves also varies, mostly depending on if they're myelinated (sp?) or not.. I believe the optic nerves are myelinated, and signals go like 200 mph in myelinated fibers
this talk show was excellent! The first part was so interesting
I like Nick and Jessi. More of them please! :)
It's interesting that what we perceive as movement is so low of a number, and yet we can easily detect small differences way beyond the threshold of 'smoothness' (which is 30 fps, I believe.)
For example, you want to have your video games running at 60 fps, because small speed changes (due to a scene being more/less complicated) of a couple fps are quite noticeable.
ahhh, my love of both these channels
OHMIGOD.
THE SECOND HAND THING HAS HAPPENED TO ME AND I'M LIKE "WTF, I KNOW IT'S BEEN THERE LONGER THAN A SECOND, BUT THAT MAKES ME CRAZY. WHY AM I CRAZY?"
I wish there was a place to just learn, share information, and speculate, not criticize or argue. I'm not complaining just putting want in to one hand.
I was taught in my TV systems class that the frame-rate that a human perceives as motion has to do with the speed rate in which the sodium-potassium pump replenish... I can't remember much of that.
also, the minimum angle of separation of two dots (or pixels) is 1' (one second)
that means two dots separated 1mm from each other, at 3 meters from you. and that is because of the separation of the cells in your macula lutea.
(that was hard to write in english)
I got up so I could watch this on my computer and not on my phone. Love scishow
Woah, okay so I looked up Harris's hawk on wikipedia, and I learned a crazy fact!
There are some in London, England, so to help with the pigeon problem around Trafalgar square. Imagine that. So far away from the desert.
Actually, the most dominant bird is generally on the bottom of the stack, as it will not abandon its perch when approached by a subordinate bird. It's a shame Hara wasn't feeling talkative- their screams are something to be admired! I work at a facility that houses one and he makes sure everyone knows if we're late bringing dinner ;)
AHH It's always felt to me like when I look at a clock, the first second is longer than every second after it. Now I know why! And I know that I'm not crazy! Thanks Hank!
2:30 Hank, the propeller going backwards, that only happens in films (very limited fps) and in AC lights because the propeller reflections are not continuous with AC light obviously. But you can't see a propeller go backwards under ambient light ever you only see a transparent disc. Which to me means the brain can process a LOT of fps.
Edit: yeah a constant flow as he said.
Thank you for speaking up.
I like that SciShow talks about interesting animals.
All Nick needs to do is pull out the film collection and ta-da! Stumped Hank! :D love it!
A stack of Harris' Hawks on a cactus? That makes me so happy!
The GHz of your monitor is what affects this if you have a 60 GHz monitor and you can only get 30 fps you wont have any affect, but if you turn v-sync off on the game you will notice half the screen is shifted left and the other is shifted right because the monitor is getting information faster than your computer can send it
I see the blur when i move my eyes, although i only notice it at all when i try to see it.
This is a cool new analogy for social rankings, the one on the bottom could say "I am a Harris's Hawk and I am the first to perch."
Your mic is really good, I can hear the traffic outside nearly perfectly
a video camera gathers light for a specific duration, which makes the final frame a blend of a longer data stream. 3D rendered computer images are very brief snapshots, and you therefor notice the lacking information between snapshots, that would have been blended in there if it was a real life video
I like Nick Jenkins! He's got a great speaking voice and he seems like a classy guy :)
Only if your eyes are trained for that. You would easily notice the "25'th frame" if it's different from the rest of the visuals, but you probably won't spot a minute fps change.
The prop effect Hank mentions happens on film due to what is called sync rate . It does not actually happen when you watch a P51D Mustang , or C130 Hercules start up , taxi out , and take off. The prop is smooth ..
It is SO refreshing to hear someone (let alone 2 people in the same room) say GIF correctly. You don;t even know how un-raged that made me.
I kept looking back and forth and back and forth and back and forth at the point where Hank was talking about the second hand illusion.
Actually, the stopped clock effect also works when you look at one eye in a mirror then look at the other eye, you can't see your eyes moving
i love jessi and her animals! more pleaaaaaseeee :D
I love these shows.
not only does it disregard it, it takes what your eyes end up on and replaces the "blur" information in your memory with that. :D
Jessi doesn't even flinch when the bird tries to fly away. That's impressive.
Thanks for your explanation, I hope you're right in this case.
Thanks! I've done a lot of research in the hopes of having my own bird(s) someday. Right now I'm largely responsible for my parents' flock of six chickens as well. :)
One of the issues with that is it can be different for everyone. For some, 48 fps seems more "real" while for others it can induce a sense of panic because of the amount of information we're getting. For me, I fit into the later, but I have many friends who were overjoyed with the 48 fps of The Hobbit because it felt more like "reality" to them. It could have something to do with conditioning our brains. I grew up with 24 fps film, but maybe they grew up with the high FPS of sports broadcasts.
I'm not sure why, but her face when the bird tried to fly away made me laugh so hard. XD
Harris Hawks use (from what I can tell) two calls, one Content "growl" and an aggressive "yell." Their packs usually have an alpha female, an alpha male, and a beta male and a beta female. When they are hunting the lower ranked birds will flush prey out of a bush, while the higher ranked birds will wait overhead to chase after the prey. After they catch their prey the higher ranked birds will eat the catch first and going down the line of ranks.
She was just amazed by a raptor sitting on her hand that's likely to try and fly off taking her with it to the skies.
Woaw that hawk is beautiful :o
Agree, its time for some erotic fan fiction.
Don't you judge me!