Light Flashcards
Transparent
Particles in a transparent material let light pass through easily
Translucent
Particles in a translucent material transmit light, but also reflects some, so a clear image cannot be seen through the material
Opaque
Particles in an opaque material do not allow any light to pass through
Incandescence
The process of emitting light because of the high temperatures.
Ex. An incandescent light bulb
Fluorescence
The process of emitting light while recieving
Electric discharge
The process of emitting light because of electricity passing through a gas.
Phosphorescence
The process of emitting light for a short time after receiving energy from another source
Electromagnetic
This spectrum includes radio waves, microwaves, and x-rays.
Chemiluminescence
The process of changing chemical energy into light energy
X-ray
This type of radiation is used regularly in hospitals to look for broken bones
Umbra
The dark part of a shadow
Shadow
An area where light is blocked by a solid object
Ultra violet
This type of electromagnetic radiation can give you a sunburn, or can be used to disinfect surfaces
Light
The form of energy that can be detected by the human eye
Infrared
This type of electromagnetic radiation can be felt when you stand out in the sun and feel warm
Bioluminescence
Occurs when living organisms produce light
Transparency
The measure of how much light passes through a material
Luminous
Describes objects which emit light energy
Gamma
These Troyes of electromagnetic radiation is given off in nuclear explosions, and is used to treat cancerous tumours
Penumbra
The lighter part of the shadow
Nonluminous
Describes objects which do not emit light, but rather reflect light from other sources
Visible spectrum
The colours of the rainbow are known as this
Radio
These waves are the longest wavelength and lowest frequency waves in the electromagnetic spectrum
Microwaves
These waves are used for cellular phones, wifi, and other forms of communications
