Recherches astronomiques de l'Observatoire d'Utrecht.

Ceased with volume 18:2. Superseded by the Bullletin of the Astronomical Institutes of the Netherlands, Supplement series.

A plea for research in Asia Minor and Syria authorized by men whose high achievements and representative character make the project a call of humanity at large for light in regard to the life of man in the cradle of western civilization,

Mode of access: Internet.

The project physics course: reader.

unit 1. Concepts of motion.--unit 2. Motion in the heavens.--unit 3. The triumph of mechanics.--unit 4. Light and electromagnetism.--unit 5. Models of the atom.--unit 6. The nucleus.