Across
- 3. Who invented the magnetron?
- 6. Who discovered the magnetron's heating power?
- 8. After a contest to name the invention, what one word did they decide on?
- 10. Why doesn't glass, ceramic, or plastic heat up in a microwave?
- 11. How many thousands did the first microwave cost?
- 13. What melted in Percy Spencer's pocket when he walked by a magnetron tube?
- 14. In 1977 what percentage of homes had a microwave?
Down
- 1. What did Raytheon do to the magnetron so a microwave that could fit on kitchen counter?
- 2. What are the tubes that produce microwaves?
- 4. Who introduced the first microwave oven targeted to “average” customers?
- 5. The name of the invention they patented was the high frequency ________ heating apparatus
- 6. What keeps microwaves from escaping the oven while it's cooking food?
- 7. Why did Raytheon have so many magnetron tubes? (two words)
- 9. What is in food that microwaves heat?
- 11. By 1988, what percentage of food products were microwavable?
- 12. What did Percy Spencer explode before Raytheon gave the OK to go forward with microwaves?