La luce teoria ondulatoria e corpuscolare Flashcards
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What is the speed of light in a vacuum?
299,792 kilometers per second (approximately 300,000 km/s)
True or False: Light is a form of electromagnetic radiation.
True
Fill in the blank: Light behaves both like a _______ and a _______.
wave, particle
What is the term for the bending of light as it passes from one medium to another?
Refraction
What phenomenon causes the colors of a rainbow?
Dispersion
What is the name of the theory that explains the dual nature of light?
Wave-particle duality
True or False: Ultraviolet light has a longer wavelength than visible light.
False
What is the range of wavelengths for visible light?
Approximately 400 to 700 nanometers
What is the effect called when light waves spread out after passing through a narrow opening?
Diffraction
What is the term for the change in frequency of light due to the motion of the source?
Doppler effect
What are the primary colors of light?
Red, Green, Blue
Fill in the blank: The angle of incidence equals the angle of _______.
reflection
What is the name of the process by which light is absorbed and re-emitted by atoms?
Emission
True or False: Infrared light is visible to the human eye.
False
What is the name of the phenomenon where light can be polarized?
Polarization
What is the unit of measurement for light intensity?
Candela
What is the term for the maximum distance light can travel through a medium?
Optical path length
Fill in the blank: Light travels _______ in water than in air.
slower
What is the relationship between wavelength and frequency of light?
They are inversely related.
What is the phenomenon called when light reflects off a surface and creates a clear image?
Specular reflection
What is the critical angle in optics?
The angle of incidence above which total internal reflection occurs.
True or False: The color of an object is determined by the wavelengths of light it reflects.
True
What is the primary purpose of a lens?
To focus or disperse light rays.
Fill in the blank: The _______ effect explains how light changes color as it moves towards or away from an observer.
Doppler
What is the term for the scattering of light by small particles?
Rayleigh scattering
What is the main source of natural light on Earth?
The Sun
