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
קטנים פיצפונים בשם אטומים.
is made up of even smaller particles
עשוי מחלקיקים אפילו יותר קטנים
that atoms are small.
about how small atoms really are.
לא חשבתם על כמה הם קטנים באמת.
that they are really, really small.
let's ask this question:
is made up of only nitrogen atoms,
עשויה רק מאטומי חנקן,
are nitrogen atoms in a grapefruit.
אבל יש אטומי חנקן באשכולית.
let's blow up each of the atoms
בואו נגדיל כל אחד מהאטומים
would the grapefruit have to be?
-- well, actually, the Earth.
-- ובכן, למעשה כדור הארץ.
the Earth with blueberries,
אמלא את כדור הארץ באוכמניות,
of nitrogen atoms as a grapefruit?
של אטומי חנקן כמו באשכולית?
It gets even more crazy.
-- and thus the blueberry, right? --
-- או לתוך האוכמניה, נכון? --
is something called the nucleus,
in the Earth,
אוכמניות בכדור הארץ,
of the atom from science class,
של האטום מכיתת המדעים שלכם,
with an arrow pointing to the nucleus.
על הדף עם חץ מצביע לגלעין.
they're not drawn to scale,
הן לא מצויירות לפי קנה מידה,
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.
around how big the nucleus is,
up to the size of a football stadium.
לגודל של איצטדיון פוטבול.
of a football stadium,
in the center of the atom,
and you could see it!
of a small marble.
blown your mind by now.
neutrons and electrons.
live inside of the nucleus,
all of the mass of the atom.
the size of a football stadium,
בגודל של איצטדיון פוטבול,
and the electrons on the edge,
and the electrons?
there are vast regions of empty space.
יש מרחבים גדולים של חלל ריק.
some electromagnetic fields,
matter, it is empty.
is inside the blueberry,
נמצא בתוך האוכמניה,
in the grapefruit.
if I can even get more bizarre.
אם אני יכול להיות אפילו יותר מוזר.
of an atom is in the nucleus --
of mass in the electrons,
kilograms per meter cubed.
בחזקת 17 קילוגרם למטר נפח.
OK, I'll put it in English units.
אני אגיד את זה במידות אנגליות.
per cubic feet.
by one foot by one foot.
all of the nuclei from a typical car.
כל הגלעינים ממכונית טיפוסית.
have to put into the box
the same density of the nucleus?
תהייה באותה דחיסות של הגלעין?
of people in the Earth.
owned their own car --
cars into your box ...
the density of a nucleus.
every car in the world
את כל המכוניות בעולם
like blueberries in the Earth.
כמו אוכמניות בכדור הארץ.
of a football stadium,
is a marble in the middle.
of vast regions of empty space.
in your one-foot box.
בקופסה בגודל של 30 ס"מ רבועים.
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