Main Answer
As Stella explores the world of blood cells through the use of a microscope, she notices a significant change in the appearance of white and red blood cells as she transitions to higher levels of magnification. Specifically, at the lowest level of magnification, the cells are visible but somewhat indistinct. .The option A is correct.
Explanation
The change in color that Stella observes as she increases the magnification is due to a phenomenon called chromatic aberration. This is a common issue with microscopes that occurs when different colors of light are focused at slightly different points within the lens system.
At lower levels of magnification, this effect is less noticeable because the cells are smaller and further away from the lens system. However, as Stella increases the magnification, the cells become larger and closer to the lens system, making chromatic aberration more apparent.
At the highest level of magnification, chromatic aberration causes white light to be split into its component colors, with each color being focused at a slightly different point.
This results in a loss of color contrast and a blurring of details within the cells. In fact, at this level of magnification, it can be difficult to distinguish between white and red blood cells based on their color alone. Instead, Stella must rely on other features, such as size and shape, to make these distinctions.
Despite this challenge, Stella is determined to continue her exploration of blood cells using her microscope. She understands that by carefully adjusting the focus and lighting conditions, she can minimize chromatic aberration and achieve a clearer view of these fascinating structures.
With each new discovery she makes, Stella gains a deeper appreciation for the complexity and beauty of the human body.The option A is correct.