How are modern mirrors made?

Related questions

1. Why did Lewis Carroll wrote Through the Looking Glass?
2. Why silver is used in coating of mirrors?
3. What kind of mirrors are used in big shopping stores to watch activities of customers?
4. What percentage of light does silver reflect?
5. What is Lookingglass?
6. Are mirrors still made with silver?
7. How are the stories in Alice in Wonderland and Through the Looking Glass connected?
8. Was the writer of Alice in Wonderland on drugs?
9. How old is Alice in Through the Looking Glass?
10. Was Lewis Carroll married?

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13. #source
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17. #aluminum
18. #vacuum
19. #britannica
20. #glass
21. #spraying
22. #which