Есть вопросы?
закрыть

Curiosity, discovery and gecko feet - Robert Full

00:00:13
Nearly every one of your science classes
00:00:17
starts off with the scientific method.
00:00:20
You recognize this?
00:00:21
Ask a question,
00:00:21
form a hypothesis,
00:00:22
perform an experiment,
00:00:24
collect data,
00:00:25
draw conclusions,
00:00:26
and then memorize a bunch of facts.
00:00:29
This is really boring!
00:00:31
Science is not a simple recipe in a cookbook,
00:00:35
and learning is not memorizing facts for tests.
00:00:38
Yet, that is exactly what we do.
00:00:40
We have to change this!
00:00:43
We have to look at how curiosity can ultimately benefit society
00:00:50
by looking towards tomorrow,
00:00:53
by going through a path from involvement
00:00:56
to imagination
00:00:57
to invention
00:00:59
to innovation.
00:01:01
And I'd like to illustrate this by telling you the real story
00:01:05
about how we discovered how geckos stick.
00:01:09
First you need to get involved.
00:01:11
You need to do curiosity-driven research yourself.
00:01:15
We know that learning by being an active researcher
00:01:18
is the best way to learn.
00:01:21
Imagine being in my lab
00:01:23
and trying to discover how geckos stick.
00:01:25
"Here is one of our subjects.
00:01:26
This is a crested gecko.
00:01:28
We are going to put the gecko on glass
00:01:30
and we're going to use a high speed camera
00:01:31
that can capture up to 1,000 pictures in one second.
00:01:35
There he goes.
00:01:36
OK, record it.
00:01:39
There's the animal's toes."
00:01:40
"So how do their feet stick and unstick so quickly?"
00:01:44
How do they do this?
00:01:46
We wonder, it's kind of crazy, right?
00:01:49
It's hard to believe.
00:01:51
Well it turns out, it was already known that the geckos have hairy toes,
00:01:56
and those hairs are really small compared to your hair,
00:02:00
and the little tips at the end are even smaller.
00:02:03
Well, my student Tanya,
00:02:05
who is not much older than some of you when she did this,
00:02:07
a sophomore undergraduate,
00:02:10
tried to figure this out,
00:02:12
and we told that her that in order to do this,
00:02:15
you'd have to measure the force of a single hair.
00:02:19
Though we kind of only did this jokingly
показать еще
свой перевод
Работаем...
нет перевода