1 option
Physics for the 21st century. Unit 2, The fundamental interactions / [produced by the Harvard-Smithsonian Center for Astrophysics Science Media Group in association with the Harvard University Department of Physics].
- Format:
- Video
- Series:
- Academic Video Online
- Language:
- English
- Subjects (All):
- Physics.
- Physics--Research.
- Cosmology.
- Genre:
- Instructional films.
- Educational films.
- Nonfiction films.
- Physical Description:
- 1 online resource (29 minutes)
- Place of Publication:
- District of Columbia : Annenberg Learner, 2010.
- Language Note:
- In English.
- System Details:
- video file
- Summary:
- This unit takes the story of the basic constituents of matter beyond the fundamental particles that we encountered in unit 1. It focuses on the interactions that hold those particles together or tear them asunder. Many of the forces responsible for those interactions are basically the same even though they manifest themselves in different ways. Today we recognize four fundamental forces: gravity, electromagnetism, and the strong and weak nuclear forces. Detailed studies of those forces suggest that the last three-and possibly all four-were themselves identical when the universe was young, but have since gone their own way. But while physicists target a grand unification theory that combines all four forces, they also seek evidence of the existence of new forces of nature.
- Notes:
- Title from resource description page (viewed August 14, 2018).
- OCLC:
- 1052765193
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.