- Florida. Collecting insects, frogs, etc. The books of Herbert S. Zim, Einstein
- Museum of Natural History
- Germany.
- Strolls along the Nahe
- Trying to create life in a fishbowl.
- The Apple Tree and a dare to God.
- Morse code.
- The Scientifi American
- My Basement Laboratory
- Cloud Chamber
- Algorithmic Music
- Spectroscope, Neon tubes and high voltage transformers
- Van de Graaf Generator
- Building a radio
- Mercury
- Dreams of a Cyclotron
- Eico Amplifier
- Science in College, my drift towards mathematics