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Questions and Answers
What is the primary characteristic of wave-particle duality in light?
What is the primary characteristic of wave-particle duality in light?
What is the speed of light in a vacuum?
What is the speed of light in a vacuum?
What type of light has a wavelength between approximately 400-700 nanometers?
What type of light has a wavelength between approximately 400-700 nanometers?
What occurs when light passes from one medium to another?
What occurs when light passes from one medium to another?
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What type of light source produces light through energy excitation?
What type of light source produces light through energy excitation?
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What occurs when light is completely reflected back into a medium?
What occurs when light is completely reflected back into a medium?
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What occurs when light waves vibrate in a specific plane?
What occurs when light waves vibrate in a specific plane?
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What is the result of light waves overlapping?
What is the result of light waves overlapping?
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Study Notes
Properties of Light
- Wave-Particle Duality: Light exhibits both wave-like and particle-like behavior depending on how it is observed.
- Speed: The speed of light in a vacuum is approximately 299,792,458 meters per second (m/s).
- Frequency and Wavelength: Light has a frequency (number of oscillations per second) and a wavelength (distance between oscillations).
Types of Light
- Visible Light: Electromagnetic radiation with wavelengths between approximately 400-700 nanometers (nm), visible to the human eye.
- Invisible Light: Electromagnetic radiation with wavelengths shorter than 400 nm (ultraviolet) or longer than 700 nm (infrared).
- Electromagnetic Spectrum: The range of electromagnetic radiation, including gamma rays, X-rays, ultraviolet, visible, infrared, microwaves, and radio waves.
Light Interactions
- Reflection: Light bounces back from a surface, following the law of reflection (angle of incidence equals angle of reflection).
- Refraction: Light bends as it passes from one medium to another, following Snell's law.
- Diffraction: Light bends around an obstacle or through a small opening.
- Absorption: Light is absorbed by a material, converting its energy into heat or other forms.
- Transmission: Light passes through a material, continuing its path with little or no change.
Light Sources
- Incandescent: Produces light through heat, such as light bulbs.
- Luminescent: Produces light through energy excitation, such as LEDs and neon signs.
- Lasers: Produces coherent, directional light through stimulated emission.
Optical Phenomena
- Total Internal Reflection: Light is completely reflected back into the medium when it reaches a certain angle.
- Polarization: Light waves vibrate in a specific plane, which can be filtered or altered.
- Interference: Light waves overlap, resulting in constructive (brighter) or destructive (darker) patterns.
Properties of Light
- Wave-particle duality is a fundamental property of light, exhibiting both wave-like and particle-like behavior depending on observation.
- The speed of light in a vacuum is approximately 299,792,458 meters per second (m/s).
Characteristics of Light
- Light has a frequency (number of oscillations per second) and a wavelength (distance between oscillations).
- Frequency and wavelength are inversely proportional, as one increases, the other decreases.
Types of Light
- Visible light has a wavelength between approximately 400-700 nanometers (nm), visible to the human eye.
- Invisible light includes ultraviolet (wavelengths shorter than 400 nm) and infrared (wavelengths longer than 700 nm) radiation.
- The electromagnetic spectrum includes gamma rays, X-rays, ultraviolet, visible, infrared, microwaves, and radio waves.
Light Interactions
- Reflection occurs when light bounces back from a surface, following the law of reflection (angle of incidence equals angle of reflection).
- Refraction occurs when light bends as it passes from one medium to another, following Snell's law.
- Diffraction occurs when light bends around an obstacle or through a small opening.
- Absorption occurs when light is absorbed by a material, converting its energy into heat or other forms.
- Transmission occurs when light passes through a material, continuing its path with little or no change.
Light Sources
- Incandescent light sources produce light through heat, such as light bulbs.
- Luminescent light sources produce light through energy excitation, such as LEDs and neon signs.
- Lasers produce coherent, directional light through stimulated emission.
Optical Phenomena
- Total internal reflection occurs when light is completely reflected back into the medium when it reaches a certain angle.
- Polarization occurs when light waves vibrate in a specific plane, which can be filtered or altered.
- Interference occurs when light waves overlap, resulting in constructive (brighter) or destructive (darker) patterns.
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Description
Test your knowledge of light's unique properties, including wave-particle duality, speed, and frequency and wavelength, as well as types of light like visible light.