Again Quote by Lawrence Hargrave
“As to the effect of the wave on the air, we will suppose the water to be quite flat and the air motionless, a heavy undulation comes on the scene, it has to pass, so it pushes the air up with its face, letting it fall again as its back glides onwards.”
About This Quote
Source Book: The Flight of Birds, 1900
Describes how a wave’s shape forces air upward then lets it fall as the wave moves forward.
In simple terms: Wave pushes air up then down as it travels.
Key Takeaway
Observe how motion creates pressure changes.
Themes
physics
fluid dynamics
wave motion
Mood
curious
analytical
Type
scientific
explanatory
When to use this quote
- aeronautics
- marine engineering
- weather prediction
Key Concepts
hydrodynamics
pressure gradients
Questions to Reflect On
- How does surface tension affect this interaction?
- What real‑world phenomena illustrate this principle?
A Different Perspective
Assumes ideal flat water and still air, which rarely occurs.
![“The people of Sydney who can speak of my work [on flying-machine models] without a smile are very scarce; it is doubtless the same with American workers. I know that success is dead sure to come, and therefore do not waste time and words in trying to convince unbelievers.” quote by Lawrence Hargrave](https://sms4smile.com/quotes/img-quotes/ee8/lawrence-hargrave-31692_american-workers_the-people-of-sydney-who-can-speak-of-my_1179795.jpg)
