|
|
 |
|
|
| The Space Between Atoms |
 |
The Space Between Atoms
You wouldn't know it to look at it, but the atoms
that make up a solid piece of iron contain more
space than stuff. How is it then that the whole
world doesn't just crumble around us? This video
segment adapted from A Science Odyssey uses
models, vivid descriptions, and analogies to
explain the structural integrity of matter at the
atomic level.
Tags : Atoms Electrons Matter Periodic Table |
|
Affichage : 19901
Durée : 76 s |
| Physics 10 - Lecture 01: Atoms and Heat |
 |
Physics 10: Physics for Future Presidents. Spring
2006. Professor Richard A. Muller. The most
interesting and important topics in physics,
stressing conceptual understanding rather than
math, with applications to current events. Topics
covered may vary and may include energy and
conservation, radioactivity, nuclear physics, the
Theory of Relativity, lasers, explosions,
earthquakes, superconductors, and quantum physics.
[courses] [physics10] [spring2006] Credits:
lecturer:Professor Richard A. Muller,
producers:Educational Technology Services
Tags : physics 10 science education webcast uc berkeley cal course class |
|
Affichage : 205558
Durée : 4439 s |
| IBM Measures The Force Required To Move Atoms |
 |
MADE IN IBM LABS: In a recent paper published in
the journal Science, IBM researchers describe a
new milestone in nanotechnology: the ability to
measure the force required to move individual
atoms. Their findings are an important step for
understanding what types of atoms are best suited
for building different kinds of nanoelectronic
devices, based on how strong or weak of a bond
they can form on different surfaces.
The ability to control atoms and move them around
on a surface was first discovered by an IBM
researcher nearly 20 years ago -- an achievement
that has been hailed as the "Kittyhawk of
Nanotechnology." But until today, nobody has
known the exact force required to move atoms on a
surface: an absolutely critical understanding if
we are to build Lilliputian computer chips and
storage devices from the atom up.
The problem is akin to what scientists and
engineers needed to learn about construction at
macroscopic sizes many decades ago. For example,
building a modern bridge would be impossible
without first measuring the strength of different
materials, understanding the relevant forces, and
comprehending how everything interacts. In the
nanotechnology realm, to make structures that you
want to remain rigidly in place you would use
strongly bonded ("sticky") atoms while for groups
of atoms that need to move you would use atoms
held in place only by weak chemical bonds.
IBM is no stranger to working with atoms. Two IBM
scientists won the Nobel Prize for their invention
of a specialized microscope that could "see"
individual atoms for the first time. And in 1989,
in the same Silicon Valley lab where today's
breakthrough took place, an IBM scientist was the
first to move atoms on a surface, spelling I-B-M
in Xenon atoms. More recently, IBM has
demonstrated the potential to store data in
individual atoms or small clusters of atoms, and
that single molecules may work well as switches
for future computer chips. As these breakthroughs
before them, IBM continues to drive the future of
atom scale research.
Tags : IBM Technology Atoms |
|
Affichage : 41225
Durée : 103 s |
| NOVA scienceNOW | Amazing Atoms | PBS |
 |
http://www.pbs.org/nova/sciencenow Throw away your
textbooks. Here is the latest, atomically correct,
version of our old friend, the atom. Don't miss
the new season of NOVA scienceNOW, airing every
Wednesday starting June 25 on PBS.
Watch past episodes of the program, try out
interactives, and more on our Web site:
http://www.pbs.org/nova/sciencenow
NOVA is produced by WGBH in Boston. Funding for
NOVA scienceNOW is provided by Pfizer, the
National Science Foundation, the Howard Hughes
Medical Institute, the Alfred P. Sloan Foundation,
the Corporation for Public Broadcasting, and
public television viewers.
Tags : amazing atom electron fun molecule nova now orbit pbs proton real scale science |
|
Affichage : 2131
Durée : 97 s |
| Atoms to X-Rays: Spin Electronics |
 |
Join physicist Frances Hellman for a fascinating
presentation about semiconducting and magnetic
materials and her research into what is called
"spin electronics," which strives to use unique
combinations of these materials to control
electrons.
Series: "Atoms to X-Rays" [4/2002] [Science]
[Show ID: 5937]
Tags : science Francis Hellman spin electronics |
|
Affichage : 1425
Durée : 3002 s |
|
|
|
|
|
|
|
|
|
|
 |
| |
|
