@@janbaxa3282 yeah so the silk is stronger. It had a less stable place while holding more weight. Not to mention all of the weights weren’t touching the steel wire while all the weights on the silk did.
They’re actually genetically modifying goats to produce the proteins that make spider silk in their milk. Since spiders are too solitary and inefficient to farm silk from. Spider goats for the win.
@@f4iryblue yes, that's my point. That the silk lasted longer and that there was a lot of wind blowing at that, whereas the steel was in a relatively static atmosphere
But you also have to consider that the leaves or twigs that the silk was attached too could have been bending when more weight was added and therefore allowing the silk to hold more weight.
@@priyanshumishra5873 well sorry for my lack of knowledge about airplanes I'll make sure to read an encyclopedia about aircrafts When I saw jet I thought of a fighter jet not a "Boeing 747"
I was expecting to watch a video of a grown man milking spiders until he could weave a spider silk rope and then hang from it, but i guess it does make more sense like this...
Spider silk can be harvested from genetically modified farm animals. They produce the same protein found in spider silk with their breast milk. The milk is then turned into fibers.
I am just really impressed by the spider silk as well as the spider itself. A spider created its web right next to my main door, I was enjoying the sun and saw the web. I just broke one of its thread that was connecting the web to main door. I just stood there and see that the spider came, saw that thread is broken, went down on the ground, picked that thread up and connected it back exactly where I broke it. I was just absolutely mind blown by that. What an amazing creature.
I like the experiment. Very interesting. Something to consider: weight distribution. I noticed that the spider silk looks evenly distributed than the weights on the steel wire just before it broke. I mean, if it was a "scaled fuzzy wire hooks" would the steel wire hold more weights or will it break faster?
It's exactly as you say, the spread out weight distribution in silk gives it an unfair advantage. Ideally what is done to measure tensile strength is to prepare a hook-like structure that is hung from the material, and then weights are added onto the hook, so that the application point of the force is a single spot. Additionally, how the material is behaving should also be taken into account: if a rod isn't bending elastically and is instead bending plastically irreversibly, then even if it can hold a bigger weight, it's not apt for withstanding repeated loads. There's a lot of properties that are of interest in a material beyond it's tensile limit. Another inaccurate factor in this video is the amount of forces put onto the wire/rope by the leaves or the table. I would have designed the experiment so that one end of the rope would've been fixed to something like a pole and then a weight would've been hung from the other end, being suspended in the air.
@@oneicarus oh yeah. The stretchiness of the spider silk and the steel wire. The experiment may be lacking to some but it sure is a good way to introduce someone to science and engineering.
The thing is, you could spend vast amounts of time and money getting in to all the tiny details that can affect such experiments. So where do you stop? Temperature, humidity, the mounting methods, the particular species of spider, the exact diameter of the silk, the exact composition of the steel alloy, the number of strands in the steel wire, how the load is spread... the list of possible variables is as long as your arm. This was just a cool little basic demonstration. 🙂
Ever since I found the channel I have been watching it everyday. Thanks for your videos you channel is on of the best on RU-vid, because It's all about science.
There are several companies working on it right now. Check out Kraig biocraft laboratorys. They’ve managed to input spider DNA into silkworms. And the worms are able to secret spider silk. Currently getting production going in Vietnam.
@@dankhalifa6937 Hey.. You know.. Can you just upload instead of Advertising or Self Promote in the public? Its more hard work than keep being a self promoter, its much Funner Promise, The only reason you came to live is to have fun, So U need Hard work Ok?
That is pretty incredible, but I feel like to compare this better since the wire is thicker, you would also have to have it strung out wider to scale it up from the spider web. But either way, amazing how it still broke sooner!
This! Especially with his most recent success in producing small bits of it in solution. His latest video on that project was really awesome! I feel like he might not be as popular do to his videos being a lot less hold your hand type science, so you need to have a better background of information in order to be able to truly enjoy/appreciate his videos
@@favremysabre7839 It depends on which Spiderman you refer to. I think the original Spider-man had man made web shooters, but the Sam Raimi one had organic webshooters from his wrist. And for a semi-troll response, technically even the organic web version isn't from a spider but from a human, Spider-man.
This is hard to believe that spider silk is so strong. The spyder can produce like 7 or 8 different types of silk as they make a web. Really cool for sure.
That spider-silk was also under significant shock load. The wind was starting to pick up towards the end. That makes a considerable difference. - Thank you again for the great content
If spiders were the size of humans, we wouldn't even stand a chance..| holy shit the replies just gave me an idea and suddenly i made something while reading all of these replies a single braincell.. thank you people for making my iq bigger
Regarding how much web to hold yourself up, remember that you'd also be swinging from it and/or catching moving bad guys, so maybe more than a 1mm thick string would be required after all.
"So are we going to, build a building out of spider silk and compare it to a building made of steel? NOPE. The best place to start is to look for a form factor of steel that matches the form factor that spider silk comes in." - Adam Savage, Mythbusters
Yeah it's not exactly the right comparison. Also that was 1 sample. We'd need to have a few of the same tests in case that steel had some imperfection an let go too soon.
This was one of the first things I learnt about when I was doing my Civil Engineering degree.. I don't know about some of the synthetics we have now., like Kevlar, Spectra, etc... but for tensile strength, in most 'non extreme' environments, spiderweb was stronger than hi-tensile poststressing steel tendons. In the experiment here, I would think the steel might've failed at the mounting joint, with a type of shear failure, as the twisting of the wire (I assume exists?) creates a stress concentrator.. and would 'attract' the force to it.... So, maybe the steel didn't fail in tension- you'd need to have some strain gauges or at least a log of the the tensile force in the wire to catch the yield point as the steel fails... A fun video, once again, though....
The fact that the spider silk was carrying all that weight with a good little breeze makes its strength all the more impressive. I bet if you had the spider silk anchored indoors to rigid structure, it would have held at least three times as much as the steel.
I wonder what applications spider silk could potentially have if it’s able to be harvested efficiently. It’s not more durable than steel obviously, but its tensile strength is 2x stronger which is really damn impressive.
Good video. However, I’m sure that different spiders have different strengths of webs. The black widow is very strong It would be cool to compare the web strength of a black widow to other more common spider webs.
Interesting video, one of my favorites of yours so far, I do have 2 questions though: 1) When you say how thick of a web you would need if you were Spider-Man, are you taking into account the extra tension from swinging on it? 2) Are you making it thicker to accommodate it stretching from the weight as well? These are not criticisms, but actual questions I pondered after the video.
Correct me if I'm wrong it's just a guess. could it mean that the spider web is actually stretchy and that it make a larger curve than the metal string. Since the tension is inversely proportional to the cosine of the vertical angle of a string the higher the angle, higher the Tension will be. Which means the metal string had more Tension.
There's this spider web from a tree, that has caught a branch mid air near where I live. As from this I knew they were very strong also wind is blowing it around and it's been there for weeks. Starting to think this spider is on steroids 😂
That is insane especially keeping in mind that there was wind constantly shaking the whole setup and that he left to go make more so all the weights were just hanging around till then causing more tension and it still went twice as hard.
This guy really has some cool stuff, then other times, I realize how good my weed is, because I realized I watched a video of a guy hanging pipe cleaners on a spider web. Lol
Secret spider council: "This mf be doing science experiments is ok but now it has come to our homes. We gotta protect our homes or else he gonna destroy the spider species gradually"
All I can think of is: 🎶 spider man, spider man, does whatever a spider can. Spins a web! Of suprise! Catches thieves just like flies. Look out! Here comes the spider man! 🎶
That's pretty amazing stuff! The spider silk disconnecting from the leaf is certainly a factor in its breaking, I guess you'd have to remove the silk and tie it to some secure fixtures for a fair test!?
I'm not sure about the way you calculated the pascals, but it seems like you did just the cross section to weight ratio. But when you have a horizontal suspended wire, the straighter it is the more internal stress it experiences with the same weight (english is not my native language but "sling cable tension" seems to result in good search results to explain the physics)
the arrangement of weights on steel is different than that of the spider silk. when you put the weight on the same point of the steel thread repeatedly, the tension must have increased to a reasonable amount to break it apart but when we consider the silk thread, it's not the same case. the weights are arranged side by side. [ I might be wrong ]
To determine yield/tensile strength from applied bending moments from point loads on simply supported members such as the one on this video, the equation is (Load * Span Length)/(4 * Section modulus). For circular cross sections the section modulus is proportional to the diameter cubed. Thus to accurately compare the tensile strengths of the two material the load should be divided by diameter cubed, not the area like was done in the video. Because of this the steel should actually have smaller weights and the spider web seems stronger in the video than it actually is in reality. Additionaly, the span length was bigger on the steel, increasing the applied moment and thus giving the spider silk even more of an unfair advantage.
@@vinsplayer2634 That does the opposite of "balancing it out" it simply skewers the results even further invalidating the data. Of course the biggest problem is all of these tests is that are not like for like comparison's. Spider's silk is actually made up of several smaller treads wrapped around each other. So if you wanted to test if it was actually test if spider silk is stronger then steel you should be using steel cable instead of wire.
Expecting a non specialist RU-vid channel to have all the equipment to test such materials with absolute accuracy is a bit disingenuous. But as a basic demonstration, this is more than adequate. The calculations have been done many times, by many different researchers. In terms of tensile strength, Spider silk is considerably stronger than steel, weight for weight. So are glass fibres, carbon fibres, Nylon, Kevlar and other para aramids.
There’s also a few variables to consider… the wind is adding more force to the spider silk and as you add more weights it increases the surface area which the wind acts on. Also because of the scale difference the small added force you apply when placing the small weights make much more of a difference than the larger weights for the steel rod. So if you consider that then you can also consider that the spider silk may be even stronger than your result.
This kind of experiment is inherently flawed though. the impact an amount of force has on an object does not have a linear growth as you move from a tiny size to a large size. For example, a plastic toy car can be struck with an amount of force that proportionately would total a real car, and not even get so much as a dent. Many a small-scale test has failed to predict what would happen in the full-scale experiment due to this. the impact of relative forces change quite a lot when changing scale, even when keeping all else proportionately the same. Materials often maintain roughly the same toughness no matter how small you scale it down, at least as long as it's thick enough to be stable. This makes many materials become seemingly indestructible to forces of it's proportionate scale, even if they are fragile from our perspective. I do believe that spider silk is incredibly strong, of course, but this particular experiment fails to really prove it because it has a flawed premise. It would be necessary to either make a thinner steel cable, or weave the spidersilk to be closer to the cable's thickness to objectively test the two side by side.
So cool! I have a question though. How important is it that all the weight on the spider silk was spread out in a line vs. the weight on the steel wire being a bit more concentrated in one area?
wdym it made perfect sense to me. he just said it was the anchor points on which the spider web as a whole rests on. he explained it very clearly and simply.
