Science quiz cards Flashcards
What is the Index of Refraction?
A property of a material that indicates how much the speed of light is bent.
What is a Mirage?
An image of a distant object produced by the refraction of light through air layers of different densities.
What are opaque materials?
Materials that only absorb and reflect light.
What are translucent materials?
Materials that transmit light but also scatter it.
What are transparent materials?
Materials that transmit light without scattering.
What is a Filter?
A transparent material that selectively transmits light.
What is coherent light?
Light of only one wavelength that travels in one direction with a constant distance between crests.
What is fluorescent light?
Light generated using phosphors to convert ultraviolet radiation to visible light.
What is incoherent light?
Light that can have more than one wavelength, can travel in more than one direction, and doesn’t travel with a constant distance between crests.
What is holography?
A technique that produces a three-dimensional image.
Example: Holography is used in security features on credit cards.
What is linearly polarized light?
Light with only a magnetic field that vibrates in one direction
What is an optical scanner?
A device that reads the intensities of reflected light and converts the information into digital signals.
What is total internal reflection?
Complete reflection of light at the boundary between two different materials.
What is incandescent light?
light that is generated by heating a piece of metal until it glows
What must an object do for you to see it?
It must reflect light.
