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While most chemical reactions take place almost immediately, there are some which can be made to occur after a timed delay. These are the so-called clock reactions. By varying the temperature or concentration of reactants, the delay can be shortened or lengthened in a striking manner.
The progress of sciences such as chemistry is due to the work of many great men. These men have made their mark in science by their curiosity and their efforts to understand natural laws. Some of these men and the fields in which they worked are: Sir Robert Boyle, properties of gases; Sir Isaac Newton, laws of motion; Antoine Lavoisier, analytical chemistry; Sir J. J. Thomson, discoverer of the electron; Jacobus von't Hoff, physical chemistry.
Changes in nature are classed as either physical or chemical changes. Examples of both types of changes are shown. Simple chemical reactions such as the burning of magnesium and phosphorous are demonstrated. Other, more complicated reactions include those of the decomposition and double displacement type.
The tale of the foolish little chicken who is hit on the head by an acorn and thinks the world is falling in is told by Poindexter and his friends. How "Chicken Little" nearly starts a panic among the animals until a sensible friend stops them is the story for today.
A public service announcement from the Citizens for Clean Air in which the close-up and audio of a man breathing overlays shots of cars, planes, factory chimneys, and other sources of air pollution. An offscreen male narrator describes the many kinds of pollutants in the air we breathe and urges the viewer to write to the organization's address. Submitted for the Clio Awards.
Presents a high-school class studying god citizenship in the community and in the school. Dramatizes the manner in which the student committees organized projects for improving school elections, choosing proper representatives for student government, welcoming new students, and up-grading lunch room conditions. Emphasizes that good citizenship in the school produces good citizenship in the community.
In this program, film sequences illustrate the steps in the prison separation and analysis technique, and an inmate tells of his experience with the classification system. Criminologist Joseph D. Lohman outlines the basic and conflicting ideas which underlie imprisonment, punishment and rehabilitation. Powers and Lohman
emphasize the need for professional personnel to implement the classification of prisoners and the importance of setting up programs to meet their individual needs.
Brushy, Susie-Q and Linda leave so much litter when they play in the park that the clean-up man has to stay late to tidy up after them. When the children realize that they are keeping him from a party, they correct their mistake and help clean up.
Clever Elsie really isn't very clever at all. Marionettes tell the story of Clever Elsie who sweeps with the broom upside down to keep from wearing out the straw. One day, Clever Elsie goes to the cellar to get some cider and she notices a pick-ax stuck in a beam. She begins to think that if she should ever marry and have a child and send him to the cellar for cider, the pick-ax might fall on his head and kill him and Elsie begins to cry. Her parents come to the cellar with Hans, who is looking for a clever wife, and Elsie tells them her story. Soon everyone is crying and Hans decides to marry Elsie because she is so clever.
Dora shows the audience how to make a clam and a bird puppet. Dora and Fignewton put on a play about Clifford the Clam who gets a sore foot from jumping too high.
Bash tells us that there were no clocks or watches aboard the Mayflower and that the watch was invented after the first settlers in America had landed. The history of mechanical methods to tell time is told by Bash from the marking of shadows by the sundial through early water clocks, notched candles on to the developments of clocks. Songs include “Dillar A Dollar,” “Grandfather’s Clock” and “Dublin City.” The Lillian Patterson dance group performs in this program.
Teenagers from Pakistan, Vietnam, Germany, and Yugoslavia discuss socialism in Yugoslavia and Russian Communism. Questions the definition of the word "freedom." Analyzes the prospects of reunification for Germany and Vietnam. (WOR-TV) Kinescope.
The neighborliness of people in the South gives rise to many stories of help to others living nearby. The assistance with plowing, picking of crops and helping “catch up on work” is told, then the custom of a logrolling is pictured, wherein the neighbors gather to clear the fields of trees and logs. After the logrolling came the brush burning, or “woods burning” to further clear the land. This life is described, followed by the good times they had at a feast, after the work was done. Songs include “In the Evening,” “Nicodemus” and “Liza Jane.”
Describes the various groups of settlers that came to this country and founded colonies. Tells of the first French, English, Dutch, Swedish, and Spanish settlers. Discusses their lives, homes, and food.
Uses laboratory experiments to demonstrate the process of combustion and the by-products produced. Explains how combustion depends on fuel, air, and heat. Illustrates combustion with liquid and solid fuels. Shows how and why various by-products are formed. Concludes with experiments showing the properties of carbon dioxide and its effect on combustion. (KQED) Film.
Visits the Brookfield Zoo to discover those animals which look and live alike but are unrelated. Explains that copy-cats occur in the plant, bird, and animal, worlds, and tells why. Uses film clips of the echidna, flying squirrel, flying phalanger, tenrec, hummingbirds, sunbirds, toucan, and hornbill. (WTTW) Kinescope.
How the clothes of people living in this country have changed is shown by Bash, in pictures and in living pictorial groups. From the early Spanish peaked helmet and bloomers, through the Cavaliers, with their plumed hats and high leather-jack boots, Bash travels, saying why and how the changes occurred. The Puritan simple dress, the colonial costume, complete with high powdered wigs, the hoop skirts and the bustles all are part of the description. Children’s costumes of the time are shown by actual children, and the dances done by the children of certain periods are demonstrated by the Lillian Patterson dance group.
Bash starts at the earliest meetings of groups of people, the church festival, and traces the development of gatherings on through the country fairs. The camp meetings of the Methodists give rise to the well-known rollicking song, “Methodist Pie.” The custom of bringing goods that were grown on the individual farm, and taking the family to the fair, to see new things, to buy things, and to meet with friends develops in to the country fair, with its gay decorations, its amusements, and its fund of knowledge. Contests are described, such as the athletic events of running and jumping and shooting, which the young men practiced, and the Patterson dance group dances to the song, “Camptown Races,” as they show how the sulkies sped around the track behind the trotting horses.
Bash tells the romance crossing streams and takes a film trip to see some historic covered bridges which are still in use. Covered bridges had many unusual features including the special toll charge for shoveling snow into the inside for the sleighs to pass on in winter. Bash tells how, fitted together with wooden pins, often they floated downstream intact in floods. Songs include “London Bridge" and "Red River Valley".