1661. Nuclear energy (30:12)

Date:
unknown/unknown
Summary:
Describes fusion of hydrogen nuclei as a source of solar energy, the chain reaction of uranium nuclei, and principles of critical mass relating to atomic bombs and nuclear power plants.

1662. Nuclear forces (30:00)

Date:
1966
Summary:
Examines the various means of delivering nuclear weapons to distant targets and protecting these delivery systems from surprise attack. Discusses how the vulnerability of bombers to nuclear attack led to the development of various kinds of protected missile sites. Reviews the effectiveness of the U.S. defenses against bomber and/or missile attack.

1663. Nuclear Radiation in Earth Studies (15:19)

Date:
1961
Summary:
Depicts the use of instruments employing radiation detectors in modern prospecting and through the use of animation, the underlying principles of radiation theory. Outlines atomic theory, defines radioactivity in terms of particle emission, and emission in terms of nuclear stability. Concludes with description of carbon 14 dating.

1664. Nuclear transplantation (12:37)

Date:
1976
Summary:
Uses photomicrography and time-lapse sequences to reveal the research technique of nuclear transplantation. Shows how nuclei are transplanted from donor body cells into activated eggs.

1665. Nursery rhymes (14:58)

Date:
1955
Summary:
The Friendly Giant shows Jerome the giraffe some of the pictures in the book, Tommy Tittlemouse Nursery Rhymes, illustrated by Katherine Evans, and published by the Children's Press. Jerome tries to guess the nursery rhyme that goes with each picture, and the Friendly Giant reads all the rhymes that Jerome does not know. (WHA-TV) Kinescope.

1666. Nutrition and Dental Care in Pregnancy (30:03)

Date:
1956
Summary:
Discusses the dietary needs of the expectant mother and stresses the importance of proper diet for maintaining the mother's dental health and for developing the baby's teeth. A specialist in nutrition and a dentist serve as consultants. (WQED) Kinescope.