# data[].attributes.headline
The bounding back of an object or a wave when it hits a surface which it cannot pass.

# data[].attributes.subject
The bounding back of an object or a wave when it hits a surface which it cannot pass.

# data[].attributes.headline
The bending of waves as they enter a new medium at an angle, caused by a change in speed.

# data[].attributes.subject
The bending of waves as they enter a new medium at an angle, caused by a change in speed.

# data[].attributes.headline
The bending or spreading of waves as they move around a barrier or pass through an opening.

# data[].attributes.subject
The bending or spreading of waves as they move around a barrier or pass through an opening.

# data[].attributes.headline
When the Tacoma Narrow's Bridge collapsed because of harsh wind forces (aeroelastic flutter) that was at 42 mph.

# data[].attributes.subject
When the Tacoma Narrow's Bridge collapsed because of harsh wind forces (aeroelastic flutter) that was at 42 mph.