Label the following diagram of Reflection Angles.

1: Incident Ray, 2: Reflected Ray, 3: Normal Line, 4: Angle of Incidence (θi), 5: Angle of Reflection (θr)

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Label the following diagram of Reflection Angles.

1: Incident Ray, 2: Reflected Ray, 3: Normal Line, 4: Angle of Incidence (θi), 5: Angle of Reflection (θr)

Label the following diagram of Refraction.

1: Incident Ray, 2: Refracted Ray, 3: Normal Line, 4: Angle of Incidence (θ₁), 5: Angle of Refraction (θ₂)

Label the following diagram illustrating the Critical Angle.

1: Incident Ray, 2: Refracted Ray (at 90 degrees), 3: Reflected Ray (Total Internal Reflection), 4: Critical Angle (θc)

What is Reflection?

The bouncing back of light when it strikes a surface.

What is Refraction?

The bending of light as it passes from one medium to another.

What is Absorption?

The conversion of light into another form of energy, usually heat, when it encounters a medium.

What is the Index of Refraction (n)?

A measure of how much light slows down in a medium, defined as $n = \frac{c}{v}$ , where c is the speed of light in vacuum and v is the speed of light in the medium.

What is Total Internal Reflection (TIR)?

The phenomenon where light is completely reflected back into the original medium when it travels from a medium with a higher index of refraction to one with a lower index of refraction, and the angle of incidence exceeds the critical angle.

Define the 'critical angle'.

The angle of incidence at which the angle of refraction is 90 degrees, beyond which total internal reflection occurs.

What are the steps to apply Snell's Law?

Identify the two media and their indices of refraction (n₁ and n₂). 2. Determine the angle of incidence (θ₁). 3. Use Snell's Law $n_1 \sin(θ_1) = n_2 \sin(θ_2)$ to solve for the angle of refraction (θ₂).

How do you determine if light will bend towards or away from the normal when refracting?

Compare the indices of refraction of the two media. 2. If light goes from a lower to a higher index (n₂ > n₁), it bends towards the normal. 3. If light goes from a higher to a lower index (n₂ < n₁), it bends away from the normal.

What are the conditions required for total internal reflection (TIR) to occur?

Light must be traveling from a medium with a higher index of refraction (n₁) to a medium with a lower index of refraction (n₂). 2. The angle of incidence (θ₁) must be greater than the critical angle (θc).

How do you calculate the critical angle?

Identify the indices of refraction of the two media (n₁ and n₂), where n₁ > n₂. 2. Use the formula $\sin(θ_c) = \frac{n_2}{n_1}$ to find the sine of the critical angle. 3. Calculate the critical angle (θc) by taking the inverse sine (arcsin) of the result.

What steps are involved in analyzing light interaction at a boundary between two media?

Determine the type of interaction: reflection, refraction, or absorption. 2. If reflection, apply the law of reflection. 3. If refraction, use Snell's Law to calculate the angle of refraction. 4. If TIR is possible, check if the angle of incidence exceeds the critical angle.

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Label the following diagram of Reflection Angles.

1: Incident Ray, 2: Reflected Ray, 3: Normal Line, 4: Angle of Incidence (θi), 5: Angle of Reflection (θr)

Label the following diagram of Refraction.

1: Incident Ray, 2: Refracted Ray, 3: Normal Line, 4: Angle of Incidence (θ₁), 5: Angle of Refraction (θ₂)

Label the following diagram illustrating the Critical Angle.

1: Incident Ray, 2: Refracted Ray (at 90 degrees), 3: Reflected Ray (Total Internal Reflection), 4: Critical Angle (θc)

What is Reflection?

The bouncing back of light when it strikes a surface.

What is Refraction?

The bending of light as it passes from one medium to another.

What is Absorption?

The conversion of light into another form of energy, usually heat, when it encounters a medium.

What is the Index of Refraction (n)?

A measure of how much light slows down in a medium, defined as $n = \frac{c}{v}$ , where c is the speed of light in vacuum and v is the speed of light in the medium.

What is Total Internal Reflection (TIR)?

Define the 'critical angle'.

The angle of incidence at which the angle of refraction is 90 degrees, beyond which total internal reflection occurs.

What are the steps to apply Snell's Law?

Identify the two media and their indices of refraction (n₁ and n₂). 2. Determine the angle of incidence (θ₁). 3. Use Snell's Law $n_1 \sin(θ_1) = n_2 \sin(θ_2)$ to solve for the angle of refraction (θ₂).

How do you determine if light will bend towards or away from the normal when refracting?

Compare the indices of refraction of the two media. 2. If light goes from a lower to a higher index (n₂ > n₁), it bends towards the normal. 3. If light goes from a higher to a lower index (n₂ < n₁), it bends away from the normal.

What are the conditions required for total internal reflection (TIR) to occur?

Light must be traveling from a medium with a higher index of refraction (n₁) to a medium with a lower index of refraction (n₂). 2. The angle of incidence (θ₁) must be greater than the critical angle (θc).

How do you calculate the critical angle?

Identify the indices of refraction of the two media (n₁ and n₂), where n₁ > n₂. 2. Use the formula $\sin(θ_c) = \frac{n_2}{n_1}$ to find the sine of the critical angle. 3. Calculate the critical angle (θc) by taking the inverse sine (arcsin) of the result.

What steps are involved in analyzing light interaction at a boundary between two media?

Determine the type of interaction: reflection, refraction, or absorption. 2. If reflection, apply the law of reflection. 3. If refraction, use Snell's Law to calculate the angle of refraction. 4. If TIR is possible, check if the angle of incidence exceeds the critical angle.