Type the year

Exercise and reference answers

Questions

1. Answer

   1637

   Question

   Descartes gave the corpuscular model in which year?

2. Answer

   1678

   Question

   Huygens gave the wave theory in which year?

3. Answer

   1801

   Question

   Young did his interference experiment in which year?

4. Answer

   1850

   Question

   Foucault measured light in water in which year?

Instructions

Type the number only.

Explanation