English

Demonstrations include: 1: Nature of Sound and Waves - Sources and Propagation of Sound; 2: Propagation of Sound - Direct Measurement of the Speed of Sound in Air and Metal; 3: Transmission of Sound Through a Medium - Attenuation of Sound in a Vacuum; 4: Refraction of Sound - Carbon Dioxide Sound Lens; 5: Interference of Sound - Sound Divided into Paths of Differing Length; 6: Interference of

Demonstrations include: 1: Standing Sound Waves - Resonating Air Column with Cork Dust; 2: Standing Sound Waves - Resonance with Illuminating Gas in Flame Tube; 3: Standing Sound Waves in Two-Dimensions - Illuminating Gas in a Resonating Cavity; 4: Vibrations in a Two-Dimensional Surface - Chladni Plate; 5: Resonance/Real-Time Strobe Holography - Resonant Modes of a Vibrating Bell; 6: Quality

Introduces geology concepts such as geologic time, continental crust, plate tectonics, volcanic activity, earthquakes, subduction zones, erosion, and glaciers.

This four-part video series presents a detailed review of the important concepts in middle school life science relating to the following: skeletal system, muscular system, circulation, respiration, digestion, excretion, endocrine system, and nervous system.

Cutting-edge medical technology and riveting, life-or-death personal dramas combine in this unprecedented, emotionally compelling exploration of THE INCREDIBLE HUMAN BODY.

Once again, Lennart Nilsson's cameras take us into the mysterious and beautiful world of the human body, capturing incredible never-before-seen footage.

Contains 3 episodes, each about 30 minutes in length. In each episode, a team of scientists that includes biologists, chemists, and physicists are transported to an isolated island where they must work together to solve challenges using mainly indigenous items.

Includes 3 episodes, each about 30 minutes long. In each program a team of scientists that includes physicists, chemists, and biologists and botanists are transported to an isolated island where they must work together to solve challenges using only rudimentary tools and indigenous materials.

Contains 4 programs, each around 30 minutes long. In each program, a team of scientists that includes biologists, chemists, and physicists must work together to solve challenges using only rudimentary tools and indigenous materials.

This four-part video series presents a detailed review of the important concepts in middle school earth science relating to Earth-Sun-Moon system, characteristics of the inner and outer planets, and fascinating highlights of the universe.

Provides an introduction into human and plant cells and looks at the primary functions and structure of the cell. Examines how the body repairs damaged cells.

What is a planet? We live on one, but there are others. Are they all like Earth? Is there life on other planets? All About the Planets takes children on a tour of the solar system, explaining vital statistics about each - size, distance fro the Sun, temperature and why some are rocky and solid while others are made entirely of gases.

Fifty years ago, two unknown scientists ran into an English pub shouting that they had found the secret of life. Jim Watson and Francis Crick were not exaggerating. Narrated by Jeff Goldblum, this series looks back on the achievements that launched a new era in biology and human life itself.

This program tells the story of genetic engineering's pioneers and the controversy surrounding it. Focuses on the race to synthesize insulin and genetically modified crops. Includes interviews with leading biochemists and molecular biologists.