Airy? Is that what you are going for?
D is the correct answer.
In the badly drawn diagram attached, you will find the <em>yellow</em> represents wavelength, which is the distance between identical points on consecutive waves.
The <em>green</em> represents the amplitude, which is the distance between the origin (middle) and crest/trough (top/bottom)
Answer:
Quick, Easy to use cameras, self-timers, photographic film
Explanation:
- Photographic film is originally made by George Eastman and he called his first camera the Kodak (1888.)
- Slogan of his company is showing that those were easy to use cameras in those days. ''You press the button, we do the rest''
- Kodak and self-timer were sold separately and the people were able to order or buy a self-timer.