Define 'Wavelength' (\(\lambda\)).
The distance between successive crests or troughs of a wave.
Define 'Frequency' (f).
The number of waves passing a point per unit time, measured in Hertz (Hz).
Define 'Refraction'.
The bending of light as it passes from one medium to another due to a change in speed.
Define 'Reflection'.
The bouncing back of light from a surface.
Define 'Diffraction'.
The bending of waves around obstacles or through openings.
Define 'Constructive Interference'.
The superposition of two or more waves in phase, resulting in an increased amplitude.
Define 'Destructive Interference'.
The superposition of two or more waves out of phase, resulting in a decreased amplitude.
What are the steps to apply Snell's Law?
1: Identify the two media and their refractive indices (\(n_1\) and \(n_2\)). 2: Determine the angle of incidence (\(\theta_1\)). 3: Use Snell's Law (\(n_1\sin(\theta_1) = n_2\sin(\theta_2)\)) to solve for the angle of refraction (\(\theta_2\)).
How do you use the thin lens equation?
1: Identify the object distance (\(d_o\)), image distance (\(d_i\)), and focal length (\(f\)). 2: Plug the known values into the thin lens equation: \(\frac{1}{f} = \frac{1}{d_o} + \frac{1}{d_i}\). 3: Solve for the unknown variable.
What is the effect of light passing from air into glass?
The light bends (refracts) towards the normal if the angle of incidence is not zero.
What is the effect of two waves being in phase?
Constructive interference, resulting in a larger amplitude.
What is the effect of two waves being completely out of phase?
Destructive interference, resulting in cancellation or a smaller amplitude.
What is the effect of light encountering a small opening?
Diffraction, causing the light to spread out.
