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.
of little tiny things called atoms
dat elk atoom uit nog kleinere deeltjes bestaat:
is made up of even smaller particles
dat atomen klein zijn.
that atoms are small.
hoe klein atomen werkelijk zijn?
about how small atoms really are.
that they are really, really small.
let's ask this question:
uit stikstofatomen is samengesteld,
is made up of only nitrogen atoms,
maar er zitten wel stikstofatomen in een grapefruit.
are nitrogen atoms in a grapefruit.
gaan we van elk van de atomen opblazen
let's blow up each of the atoms
would the grapefruit have to be?
zijn als de aarde.
-- well, actually, the Earth.
Als ik de aarde zou opvullen met bosbessen,
the Earth with blueberries,
als in een grapefruit?
of nitrogen atoms as a grapefruit?
Hoe groot is dan een atoom?
It gets even more crazy.
-- and thus the blueberry, right? --
van elk atoom bekijken
-- van de bosbes dus. --
is something called the nucleus,
hoe groot zou de kern dan zijn?
in the Earth,
of the atom from science class,
with an arrow pointing to the nucleus.
they're not drawn to scale,
and were searching for the nucleus ...
the blueberry --
as a two-story house.
als een huis met twee verdiepingen.
in het midden van dat atoom.
in the center of the atom.
It would just barely be visible.
around how big the nucleus is,
tot de grootte van een voetbalstadion opblazen.
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.
als je nu nog niet van je sokken bent geblazen.
blown your mind by now.
Het bevat protonen, neutronen en elektronen.
neutrons and electrons.
live inside of the nucleus,
all of the mass of the atom.
the size of a football stadium,
met de grootte van een voetbalstadion,
and the electrons on the edge,
en de elektronen aan de rand,
and the electrons?
there are vast regions of empty space.
some electromagnetic fields,
matter, it is empty.
is inside the blueberry,
in the grapefruit.
if I can even get more bizarre.
in de kern zit
of an atom is in the nucleus --
of mass in the electrons,
kilograms per meter cubed.
OK, I'll put it in English units.
per cubic feet.
by one foot by one foot.
all of the nuclei from a typical car.
moet je dan in die doos steken
have to put into the box
the same density of the nucleus?
of people in the Earth.
owned their own car --
cars into your box ...
the density of a nucleus.
in je doos van 30 cm zou steken
every car in the world
zoals bosbessen in de aarde.
like blueberries in the Earth.
als een voetbalstadion,
of a football stadium,
als een knikker zijn.
is a marble in the middle.
of vast regions of empty space.
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