I am to fill in the blanks without a word bank, my answers are in brackets.
1. When light waves reflect from media in which the speed of light is slower, their phase (crest or trough) is ____
2. The trick to being able to observe interference patterns for light waves in to shine one light source through ____
When a wave travels from fast to slow medium:
Reflected wave is inverted. (crest -reflected as trough is 180 deg phase shift)
1. When light waves reflect from media in which the speed of light is slower, their phase (crest or trough) is [unchanged].
2. The trick to being able to observe interference patterns for light waves is to shine one light source through [two or more slits/double slit].
To fill in the blanks without a word bank, follow these steps to find the answers:
1. When light waves reflect from media in which the speed of light is slower, their phase (crest or trough) is ____.
To answer this, we need to understand the concept of reflection of light waves and how it affects their phase. Reflection occurs when light waves bounce off a surface and change direction. When light waves reflect from a medium in which the speed of light is slower, such as when it goes from air to glass or water, their phase can be affected.
To determine the answer, we need to think about what happens to the light waves during reflection from a slower medium. When waves reflect from a slower medium, they experience a phase shift of 180 degrees. This phase shift means that the crest of the original wave becomes a trough in the reflected wave, and vice versa.
Therefore, the correct answer is: the phase (crest or trough) is reversed.
2. The trick to being able to observe interference patterns for light waves is to shine one light source through ____.
To answer this, we need to understand the conditions required to observe interference patterns for light waves. Interference occurs when two or more waves combine and interact with each other, leading to the formation of a pattern of constructive and destructive interference.
To determine the answer, we need to think about what can produce interference patterns when combined with light waves. One common way to create interference patterns is by shining light through a narrow slit or opening. This produces a pattern of interference known as a diffraction pattern or single-slit interference pattern.
Therefore, the correct answer is: shine one light source through a narrow slit or opening.
I don't see any brackets but I see parentheses.
I don't see any answers.
I would answer the first one with "shifts".
I would answer the second one with "slits".
For #2 it's much much easier to observe interference from light waves by looking at a thin layer of oil on water.