MAD HATTER 16

 

RECENT AUDIO-VISUAL ACQUISITIONS (Cont'd)
FEBRUARY, 1987

Earth Explored Series (Cont'd)

 

Water: A Cutting Edge with Time:

Water has sculptured much of the earth's surfaces and
created dramatic landforms in a unique manner. This
program examines some of the most spectacular evidence
of water's work in carving out canyons as it traces a
stream from its Rocky Mountain headwaters to the Plains
and in the geologic and human devastation that can
occur when water levels change rapidly.

The Alps: Part Two:

This program focuses on the Pennine region of the Alps,
describing its origins, defining Klippen formations and
explaining metamorphic textures and the way scientists
are able to study deformation folds using wax models.
Aerial footage and further laboratory studies, coupled
with field observations, provide evidence of the
mountain building process which is still occurring in
the region.

From Swamps to Coal:

Observations about the nature of the swamp environment
(in this case, the Okefenokee Swamp in Georgia) provide
clues for geologists searching for coal. Using core
samples and observations about the rich and varied life
forms in the area, it becomes possible to see the
processes and history which create a coal deposit.
Animation and microscopic photography further demon-
strate how plants begin their mysterious transformation
to coal.

Electromagnetic Radiation Video }" 30 mins.

 

The program begins with a discussion of the properties of
light, including demonstrations of light's behaviour as both
wave and particle. Other properties of light, refraction
and the visible spectrum, are explained as well. Visualiza-
tions are used to show the interrelationship btween frequency,
wave-length, energy level, and the constant speed of electro-
magnetic radiation.

Equilibrium - The Limit of Disorder Video *" 25 mins.

 

The rate and direction of change in chemical reactions
is discussed; electrolysis and free energy are demonstrated.
(LAWS OF DISORDER Series).