Across
- 3. Launched last year, the technology now controls temperatures for more than 40 million sq. ft. of building space, helping reduce carbon footprints by as much as 20% to 40%
- 4. Known as a "bull's eye" symbol, made up of a series of concentric circles
- 8. Process that made it possible to mass-produce steel
- 9. This daguerreotype, was invented by Louis-Jacques-Mandé Daguerre and Nicéphore Niépce in the 1830s
- 10. Invented the printing press around 1440
Down
- 1. This invention also had a rather unexpected consequence of changing people's sleep patterns
- 2. Invented the first compass sometime between the 9th and 11th century; it was made of lodestone, a naturally-magnetized iron ore, the attractive properties of which they had been studying for centuries
- 5. Replaces the often uncomfortable molded plastic fittings of more standard prostheses with a custom set of straps and bindings that can be tightened or loosened as needed
- 6. called an electrical speech machine
- 7. The global system of interconnected computer networks which is used by billions of people worldwide
- 11. Beginner's All Purpose Symbolic Instruction Code was invented in 1964 by John Kemeny and Tom Kurtz