Dr. Dawn's STEM Story: Dawn Wendell at K12Live! (MIT Museum Second Fridays, 1-10-14) - By MITK12Videos
Transcript
| 00:06 | All right . Can everyone hear me get off the | |
| 00:10 | bike ? Just allowed . I think my students today | |
| 00:14 | . All right , so hi everyone , as Elizabeth | |
| 00:18 | said I'm dr don dr john Mandel and I'm currently | |
| 00:22 | a senior lecturer of mechanical engineering . And today I'm | |
| 00:25 | going to tell you about my story which is really | |
| 00:29 | dirty . And you're over lucky because you know what | |
| 00:32 | the endpoint is . But when I started off I | |
| 00:34 | definitely didn't know that this was where I was going | |
| 00:37 | to end up . So that's why the subtitle here | |
| 00:40 | is how a nice quiet girl from suburbia ended up | |
| 00:44 | with a PhD in mechanical engineering from M . I | |
| 00:46 | . T . So why my step story ? Well | |
| 00:50 | the reason I want to tell you my story today | |
| 00:53 | , you're learning about a lot of really cool science | |
| 00:55 | and engineering topics . And especially for some of our | |
| 00:58 | younger audience members you might think this stuff sounds beauty | |
| 01:00 | cool but you don't really know what to do with | |
| 01:04 | the other than , wow , that's really cool . | |
| 01:05 | So I'm going to tell you how I found the | |
| 01:09 | things that were really cool when I was younger and | |
| 01:11 | how I followed those my passion . So I followed | |
| 01:14 | the things that interested me in a way that wasn't | |
| 01:17 | making the most linear but was a lot of fun | |
| 01:20 | . So I hope that my story can help you | |
| 01:22 | get some ideas of how you call your passions as | |
| 01:24 | well . So as I said , we know the | |
| 01:27 | ending . I'm dr Don . You may have seen | |
| 01:30 | my videos online , you may have heard about the | |
| 01:32 | new maker portfolios that are in the M . I | |
| 01:35 | . T . Office of admissions that are used as | |
| 01:37 | part of our application process . Now that was an | |
| 01:39 | initiative that I did when I was in the admissions | |
| 01:41 | office as their technical expert and assistant director of admissions | |
| 01:44 | there . So I'm out there , we've talked about | |
| 01:47 | stem , we'll talk about engineering and talk about dying | |
| 01:50 | really great . But that was not always the way | |
| 01:53 | it looked like it was their turn out . So | |
| 01:56 | here I am now you're holding . So this is | |
| 02:01 | me when I was small , that's my aunt there | |
| 02:04 | . And at this age my life goal was the | |
| 02:08 | rainbow , right ? You know why she had really | |
| 02:12 | cool outfits , really colorful , really pretty . I | |
| 02:17 | was doing a great job . Right ? If you | |
| 02:18 | ask me what I want to be when I grew | |
| 02:19 | up , that's what I said . And so here | |
| 02:22 | I am actually one of my favorite toys . My | |
| 02:25 | parents are this wooden blocks , They were really playing | |
| 02:28 | . They were just a bunch of squares and rectangles | |
| 02:30 | are old and half circles . I looked in with | |
| 02:32 | most things ever and I spent unreasonable amounts of time | |
| 02:36 | building towers and I have much younger brother who probably | |
| 02:39 | would have been about one year old in this photo | |
| 02:41 | . We spent a lot of time doc in a | |
| 02:44 | day . That was , I think his motivations were | |
| 02:46 | to walk was so you could come over and topple | |
| 02:48 | all my towers . Mhm . But you know , | |
| 02:51 | I just have this great sense of curiosity , I | |
| 02:53 | wanted to see how colleagues to build this tower when | |
| 02:55 | my mom came to visit from Hawaii , which was | |
| 02:58 | very far away as I grew up in central Connecticut | |
| 03:01 | , the first thing I did was show her in | |
| 03:02 | the tower and I really love exploring , I actually | |
| 03:07 | watched him outside a pile of rocks that has all | |
| 03:10 | sorts of great , so me as a kid wondering | |
| 03:14 | , right , I just like kind of playing around | |
| 03:17 | with my environment . So I went to school , | |
| 03:20 | I took normal school classes in college school and the | |
| 03:24 | next really kind of interesting thing in hindsight didn't happen | |
| 03:26 | . So it makes now , it turned out I | |
| 03:28 | was pretty good at this whole like kind of science | |
| 03:31 | and engineering classes , but we didn't have engineering aspect | |
| 03:34 | of the science . I was good at science . | |
| 03:35 | It's good that it was also kind of writing in | |
| 03:37 | english social studies . So my parents didn't really know | |
| 03:41 | what to do with that because that's all she's good | |
| 03:42 | at things , but they , they shouldn't sign me | |
| 03:44 | up for all sorts of different activities . So for | |
| 03:47 | example , here's me and 9th grade you tell who | |
| 03:49 | I am now the red here should give it away | |
| 03:53 | for most of these photos , but there is going | |
| 03:55 | to do with the intention . So for example , | |
| 03:59 | here is a day long activities that I did . | |
| 04:02 | This other high schoolers about bridge building . Now I | |
| 04:08 | think lesson from this as crews are boring . I | |
| 04:11 | don't think that's what my parents hoped for me to | |
| 04:13 | just go , but I realized that I just wasn't | |
| 04:15 | really bridges . I mean , I felt really tall | |
| 04:17 | towers , but I was like four . So bridges | |
| 04:20 | just weren't that cool to me . But the thing | |
| 04:23 | is that my parents didn't just let me say , | |
| 04:25 | oh , I'm not into virgins . My parents encouraged | |
| 04:28 | me to keep looking for things that I was excited | |
| 04:30 | about . They kept signing up for all these different | |
| 04:32 | activities and making sure that I was going to different | |
| 04:35 | things after school and seeing what else is out there | |
| 04:39 | . So one of these things that I just ran | |
| 04:41 | to the window in my school was this new o'clock | |
| 04:43 | , I got formed my freshman year called the first | |
| 04:46 | robotics club . Now this is a club that competes | |
| 04:49 | in the first revised competition , which is an international | |
| 04:52 | competition of robots . Mhm . Now robots are not | |
| 04:57 | like bridges or towers . So , I was like | |
| 04:59 | , huh , this is new . So can you | |
| 05:02 | tell who I am ? Yes . They only go | |
| 05:05 | the only girl there's other girls to when they're they're | |
| 05:08 | actually finding out of the photo . So yeah , | |
| 05:10 | so here I am and here we are brainstorming as | |
| 05:13 | a team . Different ways that we're going to play | |
| 05:16 | this game . This challenge was given to us this | |
| 05:18 | year and the first robotics , It was basically picking | |
| 05:21 | up big inner tubes and stacking them more than six | |
| 05:24 | ft hot . Mhm . Really , I had no | |
| 05:27 | concept of building a tower . I could do building | |
| 05:29 | rich , I could do making a robot Lift up | |
| 05:33 | this inner tube from the ground up to six ft | |
| 05:34 | high . I had no idea . Here I am | |
| 05:37 | . I can barely reach it with this little model | |
| 05:39 | we have made out of cardboard . So I decided | |
| 05:42 | that robots were cooler than And so I stuck with | |
| 05:47 | this club and I thought this one seemed like I | |
| 05:49 | had a lot more promise . I was learning a | |
| 05:51 | lot more . A lot more fun . I was | |
| 05:53 | doing things . I didn't know how did you . | |
| 05:55 | So we learned all sorts of different little things . | |
| 05:57 | We learned about batteries . We learned about motors . | |
| 06:01 | Who am I got it . Got it good , | |
| 06:06 | good . All right . So there's more girls there | |
| 06:08 | . They were just panic . So then it turned | |
| 06:12 | out we were actually able to build a robot as | |
| 06:14 | a teeth . And can you find me in this | |
| 06:16 | car ? Where am I ? I got my head | |
| 06:20 | . The toolkit come back in the toolbox . I | |
| 06:23 | was like this is awesome . So here I am | |
| 06:26 | digging around probably finding a hammer or screwdriver something a | |
| 06:30 | hand with the robot back together . And my dad | |
| 06:33 | turns out like really already photos . So to remind | |
| 06:36 | this one because yeah , yeah , good . So | |
| 06:42 | this was a really great experience for me and I | |
| 06:44 | worked on my high school's first robotics team for all | |
| 06:47 | of high school . Each time . Each year , | |
| 06:50 | each new year I learned a whole bunch of new | |
| 06:52 | context . I worked on chemical engineering sub teams . | |
| 06:56 | I worked on drive train . I worked on the | |
| 06:58 | different lifters . I worked on the electronics because I | |
| 07:01 | didn't know anything about the product and then you turn | |
| 07:03 | on a switch lights off . So I thought I | |
| 07:05 | would just try out everything . So when my parents | |
| 07:08 | were still , for me , when I was a | |
| 07:09 | kid , I'm just trying things out and see what | |
| 07:11 | you love . I just kept doing that . Once | |
| 07:14 | I found an area , I'd like to just try | |
| 07:15 | to everything inside of that area . And so in | |
| 07:18 | the end I decided my lesson was I love robots | |
| 07:23 | , lot of things . There were lots of often | |
| 07:27 | so that wasn't coming out of high school . I | |
| 07:29 | love robots . How is that gonna be a worrying | |
| 07:32 | now ? Well what I was told was that if | |
| 07:37 | you love robots you should eat engineer . I didn't | |
| 07:39 | know what it was before I got some high school | |
| 07:41 | , before I started doing all these different activities . | |
| 07:44 | So now I discovered engineering and then people told me | |
| 07:46 | you want to be an engineer . So I went | |
| 07:49 | to college for engineering actually came right here to mitt | |
| 07:53 | and I decided to become a mechanical engineer and I | |
| 07:57 | got involved in all sorts of other things again because | |
| 07:59 | once again I've been a whole new place off tons | |
| 08:01 | of fun Cambridge is tons of fun and my cheese | |
| 08:04 | , tons of fun . And there's all sorts of | |
| 08:06 | different activities there that I haven't got to experience yet | |
| 08:09 | . So things like competitive robotics , has anybody ever | |
| 08:14 | heard of the T . V . Show battle box | |
| 08:16 | ? The city's preference is getting old . I know | |
| 08:18 | it was like back when I was in college . | |
| 08:21 | Yes , so I do that . I unfortunately have | |
| 08:25 | no pictures of me driving my robot because those people | |
| 08:27 | were too busy watching . But so here's , here's | |
| 08:30 | actually one of my robots . I had three different | |
| 08:32 | robots that I built and drove . At one point | |
| 08:35 | I was the 20th range £20 or in the nation | |
| 08:39 | . So that was pretty awesome . I was really | |
| 08:41 | proud of that . This is awesome . Then I | |
| 08:44 | was like okay , this is cool , this is | |
| 08:45 | good . But now let's leave the ground . I | |
| 08:49 | didn't know how my RC planes , I was like | |
| 08:51 | this is gonna be great . It turns out I | |
| 08:53 | am not super good at flying are some length . | |
| 08:58 | This plane went up and down a lot down . | |
| 09:01 | I spent a lot of time on the ground repaired | |
| 09:03 | by me and I discovered this actually wasn't my favorite | |
| 09:05 | thing ever . And I'm not particularly good at it | |
| 09:08 | even though I practiced a lot . But I tried | |
| 09:11 | it out . I learned a lot of new things | |
| 09:14 | and also I got really involved in some class projects | |
| 09:18 | such as this is one of my favorites called the | |
| 09:20 | battery mate Abalone . This is a three pasta printer | |
| 09:27 | . You know sometimes you go to the store and | |
| 09:28 | you get those cute little shaped pasta like get a | |
| 09:33 | mac and cheese box . Spongebob Squarepants . Yeah . | |
| 09:37 | So we thought it would be cool to be able | |
| 09:38 | to design your own macaroni shapes . You know , | |
| 09:41 | I don't just want the ones that come from the | |
| 09:43 | store . I want to take up my own . | |
| 09:45 | I love star trek shapes , I want something else | |
| 09:47 | . So as a team of students and I build | |
| 09:51 | our own three printer that did pasta them . It | |
| 09:55 | was super fun . It was great . I loved | |
| 09:58 | working with everyone . I love working change up and | |
| 10:01 | having something that actually works at the end was really | |
| 10:03 | cool . Although we never eat any of the pasta | |
| 10:06 | , it was more through the concept . So that | |
| 10:09 | was really fun . Some of the other things I | |
| 10:11 | discovered when I got to college . So it turns | |
| 10:13 | out , I think like a few other hobbies that | |
| 10:16 | you maybe don't consider engineering say . But then I | |
| 10:18 | really loved . So it turns out I love baking | |
| 10:22 | and I love knitting . Yeah , so I actually | |
| 10:25 | can be found all over boston getting , especially in | |
| 10:28 | the weather forward . You don't have to wear gloves | |
| 10:30 | . I've always have all the fuss and sitting at | |
| 10:32 | the T . And I did it . And so | |
| 10:35 | what are all these things have in common ? Well | |
| 10:38 | , I decided that actually what I really love is | |
| 10:41 | creating things and I only would have discovered that by | |
| 10:45 | going out and trying all sorts of different things . | |
| 10:47 | One of the things I didn't love about RC planes | |
| 10:50 | is that I actually didn't really build the one I | |
| 10:52 | had bought . It , can't put it together , | |
| 10:54 | try to fly it . I got much more satisfaction | |
| 10:58 | out of designing my own fighting robots even though they | |
| 11:00 | often got destroyed because I learned so much more through | |
| 11:03 | the process . The same thing with kidding . I | |
| 11:07 | love the process and the process of cooking . I | |
| 11:09 | can give away most things I cook . I love | |
| 11:12 | the problem . So I love the process of creating | |
| 11:15 | . That's what I learned by going to school for | |
| 11:17 | engineering . It's not weird . Okay , so now | |
| 11:22 | PhD in engineering obviously stuck around and the question you | |
| 11:27 | might be asking is one of my parents asked me | |
| 11:29 | all the time , wow , why why a PhD | |
| 11:34 | in engineering ? Because when I started my PhD , | |
| 11:38 | it turned out that I didn't really have this vision | |
| 11:40 | of teaching and have this vision of still being here | |
| 11:44 | . And I think after all these years , but | |
| 11:47 | I realized that there are still so many things that | |
| 11:49 | wanted to learn and try . So I found ultrasound | |
| 11:53 | fun adventures earlier on and I thought there were so | |
| 11:55 | many more opportunities . The other thing that I realized | |
| 11:59 | is a long time is here . I saw that | |
| 12:00 | scientists and engineers were the ones who make the new | |
| 12:03 | discoveries . They're really the ones who are creating all | |
| 12:07 | sorts of different materials . So I wanted to be | |
| 12:10 | involved in that . Yeah , I'm going to tell | |
| 12:13 | you the story that actually was the story that inspired | |
| 12:16 | me to get a PhD that story about side . | |
| 12:21 | So , how many of you have ever been to | |
| 12:22 | a lake and seeing water stride ? If your river | |
| 12:27 | , there's these little box ? All right . So | |
| 12:29 | you're mostly familiar , pretty small , sit on the | |
| 12:32 | water and they don't really swim . They glide , | |
| 12:36 | right ? So they're gliding water straps . This one | |
| 12:42 | now , 10 years ago , we didn't know how | |
| 12:47 | they walked out on him . Or should think about | |
| 12:50 | that for a second . The year 2000 came and | |
| 12:53 | went and we did not have physics that described how | |
| 12:58 | water striders could stride on the top surface of the | |
| 13:01 | water . We had physics that student did . That | |
| 13:03 | could describe why they loaded . We understood that part | |
| 13:07 | when we actually didn't understand a real subtlety of how | |
| 13:11 | they were able to propel themselves across the surface . | |
| 13:14 | There were two competing theories . We actually didn't have | |
| 13:17 | any answers now . Pretty much everyone raised their hands | |
| 13:21 | when I said , have you seen a water strider | |
| 13:24 | ? That means it's something that you have seen in | |
| 13:25 | your life that you probably just thought was like , | |
| 13:27 | oh this bug . We didn't understand the physics of | |
| 13:30 | it . I went to a seminar after the professor | |
| 13:33 | who actually figured this out . What he told me | |
| 13:35 | , that my mind was blown and I decided that | |
| 13:37 | this was my challenge . I knew how to build | |
| 13:40 | things , but I wanted to understand the size of | |
| 13:43 | a different way . And so I'm going to answer | |
| 13:47 | the question is so now we actually know . So | |
| 13:49 | about 10 years ago now , this professor and a | |
| 13:52 | couple of students had an idea of how to settle | |
| 13:55 | the debate between these competing theories . So they had | |
| 13:58 | an idea , they made some experiments , And actually | |
| 14:01 | these are the images that were the cover of nature | |
| 14:04 | that showed these fortresses here , both in this image | |
| 14:09 | and this image show that that is how the water | |
| 14:12 | strider is able to propel itself across the surface of | |
| 14:14 | the water . It's participate . So I thought this | |
| 14:19 | was amazing . And not only did we understand the | |
| 14:22 | physics of this . So this was done in a | |
| 14:25 | project jointly between the math department at MIT and mechanical | |
| 14:28 | engineering department at MIT . We were then able to | |
| 14:31 | use the physics game from that to build a mechanical | |
| 14:34 | water strider . So this is what they did . | |
| 14:36 | They had an idea , they did experiments . They | |
| 14:38 | figured out the answer . And then they were like | |
| 14:40 | and now we're going to build a robot . I | |
| 14:42 | love robots . You know that I thought this was | |
| 14:46 | amazing . This was incredible . And I thought if | |
| 14:49 | there are still problems like this out there , things | |
| 14:51 | that you can see every day aren't fully understood . | |
| 14:54 | I am not done in school yet . And it | |
| 14:58 | turns out the person who built this little water strider | |
| 15:00 | robot do these experiments is a super cool person . | |
| 15:03 | And I ended up getting my species from the same | |
| 15:05 | lab that he did . That was so inspired by | |
| 15:07 | the mechanics . He's too so we have the same | |
| 15:09 | adviser still one of my heroes and it's ingenious for | |
| 15:12 | what you do . We both engineering . Mhm . | |
| 15:16 | So anyways which one of the photo again ? You | |
| 15:19 | gotta figure if you're good at this you gotta figure | |
| 15:21 | out . Yeah . So that's why I wouldn't want | |
| 15:24 | to get a PCI . So for me my journey | |
| 15:29 | and engineering because engineering is really an outlet for my | |
| 15:34 | creativity and curiosity about the world . I like designing | |
| 15:38 | things like abilities like creating things , I like understanding | |
| 15:41 | things . And the really other cool thing that I | |
| 15:44 | discovered , the further I went along and the more | |
| 15:46 | I learned is that I can travel around the world | |
| 15:50 | and meet other people in engineering and science . We're | |
| 15:53 | just as excited about the things that I am . | |
| 15:56 | They want to talk about this and they want to | |
| 15:58 | share ideas and they want to collaborate . I got | |
| 16:02 | to go to new Zealand china . I got to | |
| 16:06 | live in France when I graduated my PhD , my | |
| 16:09 | mom's an orchestra . She never got to go to | |
| 16:12 | France and I got a job in paris because I | |
| 16:16 | was a engineer and they use them with my specific | |
| 16:19 | expertise to go over their usually mechanics research in paris | |
| 16:23 | awesome . So hopefully through this , you see that | |
| 16:28 | you can really have a nominee your journey . So | |
| 16:30 | all these things that you're seeing tonight , all these | |
| 16:32 | different ideas , these different explanations , All the signs | |
| 16:35 | of engineering is awesome is out there , you should | |
| 16:39 | get out there , figure out where your passion lies | |
| 16:43 | . Get involved . Follow those passions , ask questions | |
| 16:48 | , keep exploring because maybe the 1st , 2nd , | |
| 16:51 | 3rd 12th thing fine , it's not going to be | |
| 16:54 | the thing that's most exciting for you and it's also | |
| 16:56 | okay , we don't have all the answers right now | |
| 16:59 | . Maybe you don't know where your life story is | |
| 17:00 | gonna take you yet , I didn't know where mine | |
| 17:02 | is gonna take me . But as I said so | |
| 17:05 | I got the doctrine , I finished my PhD in | |
| 17:08 | mechanical engineering , I got a job in physics research | |
| 17:12 | in fluid mechanics in paris . I lived in paris | |
| 17:16 | for a year and then my journey took another term | |
| 17:19 | . I came back to M . I . T | |
| 17:21 | . And the technical expert in the admissions office where | |
| 17:23 | I got to work with fantastic people all over the | |
| 17:26 | world and tell them about optimistic my teeth . And | |
| 17:29 | now I transitioned again to lecturing because just as you've | |
| 17:34 | seen here tonight I love to talk to people . | |
| 17:36 | And so it absolutely incredible for me to get to | |
| 17:39 | talk about engineering students and share with them my passion | |
| 17:42 | and my discoveries and help them discover engineering themselves . | |
| 17:47 | So thank you very much . I'm gonna stick around | |
| 17:49 | for a couple seconds to answer a few questions either | |
| 17:51 | about the technical or not technical side of my life | |
| 17:54 | . And then I ended up in exponential where you | |
| 17:56 | can hear about more awesome step activities President uh intimidation | |
| 18:11 | uh Start lecturing next month . I don't know what's | |
| 18:14 | gonna happen . Your questions on robots . You all | |
| 18:21 | know how to build robots . How exactly do water | |
| 18:27 | striders stand ? Don't want . All right . So | |
| 18:29 | the question is how do you watch and understand on | |
| 18:31 | water ? So they're standing and there's moving , It | |
| 18:34 | turns out those are very different things . So we're | |
| 18:36 | standing on water . They have these long legs that | |
| 18:41 | are hydrophobic , that needs that are repelling water . | |
| 18:44 | And so the amount of area that they have in | |
| 18:47 | each of their legs actually system afloat . So it's | |
| 18:50 | as if you took four huge inner tubes and tie | |
| 18:54 | them to use your hands . You wouldn't think either | |
| 18:58 | . So they are taking advantage of geometry in that | |
| 19:00 | case . Now , the thing is if you hide | |
| 19:03 | these huge water to use your hands and deep and | |
| 19:06 | you're loading there in the pond and you try to | |
| 19:10 | move the water tubes , it's like they're slippery right | |
| 19:15 | waters , It's the brief surface . And so you | |
| 19:18 | might be moving the water tubes and not going really | |
| 19:22 | anywhere . You can't just stop there because when you | |
| 19:25 | swim , you actually paddle , right ? Doggy paddle | |
| 19:28 | or like a real person swimming , that's not why | |
| 19:31 | it's like , I think this is what happens when | |
| 19:32 | you really swim and so people don't just float on | |
| 19:35 | the surface , Water striders don't just blow . But | |
| 19:37 | the question was , how are they able if they're | |
| 19:40 | not putting their legs into the water to create that | |
| 19:43 | propulsion ? So they're actually using some creative physics that | |
| 19:47 | have to do with the surface tension of the water | |
| 19:49 | . And that's why you were able to see these | |
| 19:50 | vortices . Those vortices are able to interact with each | |
| 19:53 | other and propel the box right over . That was | |
| 19:57 | one of the theories that was out there . There's | |
| 19:58 | another competing theories , but no one had actually really | |
| 20:00 | figured it out because they were like , okay , | |
| 20:02 | the water fires on the water floating is good , | |
| 20:05 | but it wasn't clear how they were actually able to | |
| 20:08 | go forward . I thought that was crazy , like | |
| 20:11 | how do you not know that ? Yeah I know | |
| 20:16 | . This time we look at a lot more about | |
| 20:18 | kids like this layer . Mr smack war places . | |
| 20:26 | Yeah , you can stand on that memory . Great | |
| 20:31 | , great question . A great .2 . So water | |
| 20:34 | has some really interesting poverty . The question is about | |
| 20:37 | the top surface of the water . Now that's called | |
| 20:40 | surface tension . And the water striders are able to | |
| 20:45 | take advantage of surface tension in order to float . | |
| 20:48 | And people debated what elements of certain tension we're helping | |
| 20:51 | them propel themselves . So that was that was another | |
| 20:54 | one of the challenges . There's a lot of really | |
| 20:55 | great stuff out there about surface tension actually . And | |
| 20:59 | that that I couldn't give a whole lecture about all | |
| 21:01 | the awesomeness that is out there . Here's a good | |
| 21:03 | take home experiment for you all about surface tension . | |
| 21:06 | So if you take cheerios , cheerios and a bowl | |
| 21:09 | of milk don't for a whole lot bowl of milk | |
| 21:12 | . Put a couple cheerios and you'll find that if | |
| 21:15 | they come close together , they'll actually stick , which | |
| 21:18 | is weird . Right ? Like there's no blue . | |
| 21:21 | Why are they sticking ? And they're sticking as a | |
| 21:23 | result of surface tension . There's actually an energy minimization | |
| 21:27 | that happens when the cheerios come close to each other | |
| 21:30 | . And so that stickiness is actually a result of | |
| 21:33 | surface tension . Okay . It's really cool . That's | |
| 21:37 | like one of my favorite experiments . There's another thing | |
| 21:39 | that , you know , when I was four years | |
| 21:40 | old , I wanted on my cheerios based out in | |
| 21:42 | the bowl , I couldn't figure out why they wouldn't | |
| 21:44 | stay where I put them . Physics . Physics . | |
| 21:47 | It's always physics calls . All right . One more | |
| 21:52 | question and then we're going to turn it over the | |
| 21:53 | next what's the biggest thing ? Well , the biggest | |
| 21:56 | thing , I mean car , do you mean the | |
| 22:01 | largest or the most complicated for ? That was complicated | |
| 22:06 | . That's hard . I think about all the projects | |
| 22:10 | I've worked on with lots of different people . There's | |
| 22:12 | probably some of those that are watching more complex . | |
| 22:14 | I think probably if you talk about complexity in the | |
| 22:17 | shortest amount of time , it was the Pepperoni . | |
| 22:20 | So we went from the idea for the 3D pasta | |
| 22:23 | printer to a pasta printing device in less than two | |
| 22:27 | weeks . So that had a huge amount of complexity | |
| 22:31 | and we all worked really , really hard to finish | |
| 22:32 | it up that quickly . But it was just something | |
| 22:35 | that we want to do . It was really , | |
| 22:38 | really fun . So it doesn't have to be a | |
| 22:40 | long term project either something faster than . Thank you | |
| 22:45 | very much for joining me . |
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