Refraction, diffraction and interference

Question 1

What are the safety issues with lasers

Answer 1

very intense so eye damage
never shine at eyes
dont shine at reflective surfaces

Question 2

What is interference

Answer 2

for transverse waves it is peaks and troughs

Question 3

Where can interference happen

Answer 3

any type of wave
any medium

Question 4

What happens when two peaks meet

Answer 4

super peak because displacement adds together

Question 5

What is the name of when two peaks meet

Answer 5

super pose

Question 6

What are the two types of superposition

Answer 6

superposing constructively
superposing destructively

Question 7

What happens when supperposing destructively

Answer 7

two waves of same amplitude collide when one is at peak and one is a trough
therefore cancel out