71. "It's only the beginning" (10:15)

Date:
1951
Summary:
Describes the importance of industrial research in satisfying consumer needs and meeting competition. Shows through animation the large expenditure of time and money that has gone into the development of nylon, as well as into unsuccessful attempts to develop new products.

72. "It's the humidity" (13:04)

Date:
1962
Summary:
Uses common everyday examples of the effects of humidity to introduce and explain this idea. Shows Kay, an attractive teenager, and her adventures with a violin, a stuck drawer, and drying off at the pool as these processes are influenced by the humidity. Animates an explanation of dew, relative humidity, and dew point. Shows and explains several weather instruments for measuring humidity.