This week we discuss:
- Electric motor
- Ernst Mach
- Alexander Graham Bell
- AT&T
- RCA NBC David Sarnoff
- Rudolph Diesel
- Henri Becquerel
- Transatlantic service
- Werner Heisenberg
- Checkograph
- James Chadwick’s neutron
- RADAR
- Arrowbile
- Valentina Tereshkova
- Polaroid
- Steve Jobs
- Sputnik 9
- Ranger 8
- Cray-1
- Venera 14
- CDs
- Michelangelo virus
- Yahoo!