Jon Bergmann: Just how small is an atom?
Jon Bergmann co-wrote the book on the "flipped classroom" -- using video to help students master new ideas outside the traditional class setting. Full bio
Double-click the English transcript below to play the video.
이루어져 있다는 사실을 알 겁니다..
of little tiny things called atoms
양자와 중성자 그리고 전자라고 불리는
is made up of even smaller particles
사실도 알고 있을 겁니다. .
아마 들어봤을 겁니다.
that atoms are small.
작은지 한번도 생각해 본적이 없죠?
about how small atoms really are.
매우 작다는 거에요.
that they are really, really small.
작은지 궁금하시겠죠?
질문을 하나 해보겠습니다:
let's ask this question:
이루어져 있다고 가정해보죠,
is made up of only nitrogen atoms,
질소가 들어있는 건 사실입니다.
are nitrogen atoms in a grapefruit.
let's blow up each of the atoms
would the grapefruit have to be?
같은 크기가 될 것입니다.
-- well, actually, the Earth.
지구에 블루베리를 채워 넣는다면
the Earth with blueberries,
숫자만큼 필요할거라고 하겠죠.
of nitrogen atoms as a grapefruit?
It gets even more crazy.
-- and thus the blueberry, right? --
-- 블루베리 속을요. -- 맞죠?
불리는 것이 있고,
is something called the nucleus,
같다면, 핵은 어느 정도의 크기여야 할까요?
in the Earth,
원자의 사진을 기억하고 있을 겁니다.
of the atom from science class,
작은 점을 봤던 그 과학수업 말이죠.
with an arrow pointing to the nucleus.
그려진 게 아니에요.
they're not drawn to scale,
and were searching for the nucleus ...
the blueberry --
as a two-story house.
in the center of the atom.
It would just barely be visible.
블루베리의 크기를
around how big the nucleus is,
up to the size of a football stadium.
of a football stadium,
in the center of the atom,
and you could see it!
of a small marble.
blown your mind by now.
중성자 그리고 전자를 포함하고 있죠.
neutrons and electrons.
live inside of the nucleus,
all of the mass of the atom.
the size of a football stadium,
and the electrons on the edge,
핵과 전자 사이에는 무엇이 있을까요?
and the electrons?
there are vast regions of empty space.
빈 공간이 존재합니다.
전자기장이 존재합니다.
some electromagnetic fields,
말한다면, 그곳은 비었습니다.
matter, it is empty.
is inside the blueberry,
in the grapefruit.
if I can even get more bizarre.
of an atom is in the nucleus --
of mass in the electrons,
kilograms per meter cubed.
우리가 주로 쓰는 단위로 바꿔 볼게요.
OK, I'll put it in English units.
per cubic feet.
1피트 정도가 되는 박스를 만드세요.
by one foot by one foot.
핵들을 가지고 와 봅시다.
all of the nuclei from a typical car.
얼마나 많은 자동차들의 핵을
have to put into the box
the same density of the nucleus?
사람들의 수와 비슷합니다.
of people in the Earth.
자동차를 사용하고 있다면,
owned their own car --
안에다 집어 넣어야 합니다.
cars into your box ...
the density of a nucleus.
자동차를 그 작은 박스 안에 넣으면,
every car in the world
만들었다고 말할 수 있겠죠.
블루베리라고 생각해 봅시다.
like blueberries in the Earth.
이것을 풋볼 경기장만큼 확대해 봅시다.
of a football stadium,
is a marble in the middle.
of vast regions of empty space.
밀도를 가지고 있습니다.
집어넣는 것을 생각해 보세요.
in your one-foot box.
ABOUT THE SPEAKER
Jon Bergmann - EducatorJon Bergmann co-wrote the book on the "flipped classroom" -- using video to help students master new ideas outside the traditional class setting.
Why you should listen
Jon Bergmann is considered one of the pioneers in the Flipped Class Movement -- in fact, he co-wrote the book on the Flipped Classroom, available from ISTE Press in June 2012. Bergmann believes educators should ask one guiding question: What is best for my students in my classroom? To the best of his abilities he has done this in his two-plus decades as a high school science teacher. He received the Presidential Award for Excellence for Math and Science Teaching in 2002 and was named Semi-Finalist for Colorado Teacher of the Year in 2010. He blogs at flipped-learning.com.
He is the Lead Technology Facilitator for the Joseph Sears School in Kenilworth, Illinois.
Read about the making of "How Small Is an Atom?" >>
Jon Bergmann | Speaker | TED.com