Answer :
When I reduce the amplitude almost to zero and wait for the waves to hit the screen, my screen darkens because it takes longer for the waves to arrive.
What effect does amplitude have on color?
The intensity of the color is determined by the amplitude, or the distance between the wave's midpoint and its peak. The more intense and bright the color, the greater the amplitude of the waveform.
Why doesn't changing the amplitude change the color of the light?
If you change the frequency of the light, the color changes, but what if you change the amplitude You simply cannot. Photons make up light. All photons with the same wavelength (color) have the same wavelength.
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In physics, when the amplitude of light waves in Young's double-slit experiment is reduced to nearly zero, the screen darkens due to a reduction in intensity, leading to less visible interference patterns.
When we discuss the behavior of light in experiments such as Young's double-slit experiment, we're entering the realm of wave interference and diffraction in physics. In such a setup, when I reduce the amplitude almost to zero and wait for the waves to hit the screen, my screen darkens because with a very low amplitude, the waves' ability to produce a visible pattern on the screen diminishes. The amplitude of a wave is directly related to its intensity—the higher the amplitude, the higher the intensity and vice versa.
In the context of this experiment, constructive and destructive interference plays a key role in the light and dark patterns observed. Constructive interference occurs at points where the waves from both slits are in phase, enhancing the amplitude and illuminating the screen. Conversely, destructive interference occurs when the waves are out of phase by 180°, canceling each other out and resulting in a darker screen. By turning the amplitude down nearly to zero, you essentially reduce the overall intensity of light, which makes the pattern on the screen more difficult to detect. This means it will take longer for the waves to have a noticeable impact, thus my screen darkens because it takes longer for the waves to arrive.
This principle not only applies to light but also to understanding how other waves behave, such as sound waves and water waves.
