Khan Academy
Khan Academy: Waves and Optics: When Source and Wave Move at Same Velocity
Looks at what happens when the velocity of the source is equal to the velocity of the wave. [7:35]
Khan Academy
Khan Academy: Waves and Optics: Parabolic Mirrors 2
An exploration of what the images will look like for objects placed at different distances away from parabolic mirrors.
Khan Academy
Khan Academy: Waves and Optics: Parabolic Mirrors and Real Images
Explains how parabolic mirrors reflect light, using the example of a car's headlight. Goes on to discuss how real images are formed with a parabolic mirror.
Khan Academy
Khan Academy: Waves and Optics: Introduction to the Doppler Effect
Introduction to the Doppler Effect.
Khan Academy
Khan Academy: Waves and Optics: Doppler Effect Formula for Observed Frequency
Discover waves and optics by learning about the Doppler effect formula for observed frequency. [10:13]
Khan Academy
Khan Academy: Waves and Optics:doppler Effect Formula When Source Is Moving Away
Learn about waves and optics by discovering the doppler effect formula when source is moving away. [9:18]
Khan Academy
Khan Academy: Waves and Optics: Virtual Image
Video lectures discusses virtual image and light rays. [7:52]
Khan Academy
Khan Academy: Waves and Optics: Object Image and Focal Distance Relationship
Explore waves and optics with details of object image and focal distance relationship (proof of formula). [12:29]
Khan Academy
Khan Academy: Waves and Optics: Specular and Diffuse Reflection
Explains specular and diffuse reflection, using drawings and examples, and the difference between the two. [11:00]
Khan Academy
Khan Academy: Waves and Optics: Concave Lenses
Demonstrates how concave lenses work. [3:06]
Khan Academy
Khan Academy: Waves and Optics: Specular and Diffuse Reflection 2
Specular and diffuse reflection is explored in this video lecture. Understand why an apple is red by looking at which color is absorbed or reflected. [7:41]
Khan Academy
Khan Academy: Waves and Optics: Convex Lens Examples
Convex lens seem confusing to you? This video lecture gives you some examples of ray diagrams for objects placed at different distances from a convex lens. [9:35]
Khan Academy
Khan Academy: Waves and Optics: Total Internal Reflection
A discussion of critical incident angle and total internal reflection. [7:55]
Khan Academy
Khan Academy: Waves and Optics: Snell's Law Example 2
An exploration of Snell's Law using the example of a beam of light being refracted through a pool of water. [11:25]
Khan Academy
Khan Academy: Waves and Optics: Introduction to Waves
Introduction to transverse and longitudinal waves.
Khan Academy
Khan Academy: Waves and Optics: Snell's Law Example 1
Learn about waves and optics by discovering this example of Snell's Law. [10:44]
Khan Academy
Khan Academy: Waves and Optics: Refraction in Water
Discover waves and optics by learning about refraction in water. [4:25]
Khan Academy
Khan Academy: Amplitude, Period, Frequency and Wavelength of Periodic Waves
A video looking at the properties of periodic waves, including amplitude, period, frequency, and wavelength. [14:26]
Khan Academy
Khan Academy: Waves and Optics: Refraction and Snell's Law
A video lecture discussing refraction and Snell's Law. Learn about the bending of a light's path as it travels through different mediums. Understand what causes refraction and how to calculate the angle of refraction. [14:23]
Khan Academy
Khan Academy: Waves and Optics: Object Image Height and Distance Relationship
Explores the relationship between the height of an object and the height of its image through a convex lens, and relates this to the ratio of their distances from the lens. [2:22]