Erwin Schrodinger A) suggested the existence of matter waves ...

[fahad]

Erwin Schrodinger
 
  A) suggested the existence of matter waves (1924).
  B) discovered the positron using a cloud chamber (1932).
  C) was the first to produce diffraction patterns of electrons in crystals (1927).
  D) developed a wave equation for matter waves (1926).
  E) set the limits on the probability of measurement accuracy (1927).

Question 2

You can only see a rainbow if
 
  A) the sun is behind you.
  B) the sun is in front of you.
  C) the sun is 90 to the side.
  D) the sun is 180 to the side.

[memslove]

Answer to Question 1

D

Answer to Question 2

A

[fahad]

Thank you!

[memslove]

Always glad to help...