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I taught "Strength of Materials" for years, and that's where the YouTube channel got started
… and so at first it was just the problems that my students were having.
Whenever they get stuck with something I'd shoot a quick video.
The very first one I shot got 500 hits quickly.
You don't have to be too bright to figure 73 people didn't hit this video 500 times.
Somebody else is watching this.
Originally, the students in my class wanted some way to record lectures.
I tried recording the whole lecture … I tried recording problems …
and it just didn't work. It wasn't a good format for it.
So I thought, well it can't be that hard to do a YouTube channel.
So I shot one video with that old little camera,
and that's the one that started getting hits.
It started out … me trying some things that didn't work
to find this YouTube channel idea did work.
If you look at the old videos, the lighting is just horrible.
Actually, the audio wasn't that good either.
As time went by I start thinking, well it's got to be a better way to do this.
I got a better camera … and fairly recently one of the professors here …
… Carlos Morales, helped me out. Some of his grad students came down
and they set up these nice LED lights that you see up here right now
and there's some reflectors over here.
This is a lot lot better than it used to be.
There's really two ways to do this. One is lots of production value.
You know, animations … lots of set up
The people who do this get lots of hits.
It's not uncommon to see people get hundreds of thousands of hits
on a fairly technical video.
The other way to do it is what I'm doing,
where I can set up and shoot a video in an hour or two
I can turn them around very quickly.
There's not a lot of production value.
It's just me standing at my board
with maybe with some little demo pieces … some hardware
and then running through what amounts to basically a homework problem.
And because I can turn them around so fast I can respond to needs much more quickly.
To this day, I have no idea how people find these videos.
They must be doing searches or something.
The first time a user or viewer contacted me … was from Austria.
Well, okay, that's definitely not one of my guys.
I don't know how this person found it
but they had a question and I think I probably was able to answer it.
But that's when it occurred to me … people all over the world are seeing this.
There's 210, 220 countries in the world, depending on how you count them,
and I've got hits from every single one of them.
I have hits from the Svalbard and Jan Mayan Islands.
I had to go look it up. I had no idea where these were.
By far most of the hits come from the United States, Great Britain, India, Australia.
But I get a lot from from countries where you wouldn't think there'd be enough
English-speaking population for it to matter.
So it's a neat way to show engagement beyond the boundaries of just Purdue or even the United States.
The funniest thing I've ever had happen …and one that that convinced me that I was
really onto something … is I had a grad student who came here. He was
admitted here and showed up in one of my classes … He took my class as a student.
I walked in and he said — he's from Korea — he said,
"You're the YouTube guy."
I said, well I'm one of the YouTube guys.
"Because we watch your videos in Korea. We all know you."
Well ok … that's … didn't expect … didn't see that coming at all.
I turn these around pretty quickly.
I'm human. I'm fallible. I occasionally make a mistake in these
and sometimes I can fix it in editing. You know I'll actually put a little note …
See that minus sign? That's wrong but I corrected it later, that kind of thing.
Once in a while one will slip through that really does have an error.
Boy do I hear about it! Wow! I had one that had a very subtle
but real error in it that caused me to get the wrong answer, and it took me a
while to get around to finally re-shooting it. The original one was eight or ten minutes.
In order to very very carefully walk through the steps correctly
and ensure to the viewers that I wasn't … you know, I hadn't messed it up this time …
the replacement video was like 20 or 21 minutes, which for me is a really long video.
It turns out the ones I like … and I've got, you know, there's enough of them
now, there's there's over 250 … the ones I like aren't necessarily the ones anybody
else likes. What I've learned over the years is I have very limited ability
to predict which ones are going to be good and which ones aren't —
or, which ones are gonna be popular and which ones aren't.
I did one where I was riding a skateboard down the hall
and purposely slammed into a wall to show deceleration.
I thought it was great, but it didn't get very many hits.
Another one that I did where I was showing how a beam changes stiffness
if you're standing on the edge of it or you flip it over,
like a floor joist versus like a diving board,
and I thought that was simple to the point of maybe not being worth doing.
Oh, that one was a big hit! So it's one of these things. I finally
just decided that the viewers are right. Whatever they like, they like,
and that they'll tell me what I need to do to reach them. As long as I'm
respectful of that, respect their needs and trust that they'll tell me,
everything works out great.
Hey, buckaroos and buckarettes, it's good to be back with you.
Today I want to show you how to calculate the area moment inertia of a C-beam,
a beam that's got a cross-section shape.
[Prof. French, voiceover:] I thought a lot about whether I want to
change how I do the videos, whether I want to go to a more sophisticated
production setup … and I don't think I do.
The videos would look a lot cleaner, a lot more produced than they do now.
But there'd be a lot fewer of them
and I wouldn't be nearly as responsive to the viewers.
I like what I'm doing now. If there's one thing I would like to change, I want to have more
hardware be part of it. A lot of the videos are just me at a board working
through a homework problem, and some of the very popular ones are like that.
But I'm a lot more pleased with the results personally when I'm outside …
you know, I come in here, do a little bit of math, go outside, ride a skateboard, sit on a beam,
jump, bounce, something … that's concrete and real … take those results and then
come back here and finish the problem. Those those seem to work out very well.I like those.
I'm a faculty member at a research university, and I take the
research part of my job seriously. I try very hard to earn my place here.
But at heart, I'm an engineer and a teacher. That's how I think of myself. And so …
I derive satisfaction from figuring out how to do problems and how to explain them.
I like doing that. And … nobody needs to encourage me. I just do that anyway.
And so figuring out a solution method … a clean, clear, logical
solution method to a problem, is something I like doing. It's probably
not far from somebody who likes writing stories, or who likes painting or drawing,
or writing a poem. It's a very personal thing, and I feel good when I know I've
done a good job and the video comes out well, you know, the presentation is clear,
I've thought through it, and it looks like something where I'm really pleased with the product.
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