Early Light Theories & Experiments
This Greek philosopher believed beams of light came from the human eye to see objects
Who is Pythagoras?
This optical device is used to view objects that are too small for the naked eye.
What is a microscope?
Materials that allow light to pass through with little or no scattering are called this.
What is transparent?
The human eye's opening that allows light to enter is called this.
What is the pupil?
The distance from the crest of one wave to the crest of the next is called this.
What is wavelength?
According to Euclid, this happens when light hits a flat mirror
What is the angle of incidence equals the angle of reflection?
A refracting telescope uses this many lenses to form an image.
What are two lenses?
This term describes light bouncing off objects.
What is reflection?
A convex lens is thicker in the middle and does this to light rays.
What is converge them?
White light is made of all these.
What are the colours of the visible light spectrum?
Ptolemy studied this phenomenon when light passes from air into glass.
What is refraction?
This device uses two short refracting telescopes attached together.
What are binoculars?
This type of reflection occurs when light bounces off a rough surface.
What is diffuse reflection?
Nocturnal animals have this structure that reflects light inside their eye.
What is the tapetum lucidum?
These rays are the most dangerous and have the highest frequency in the electromagnetic spectrum.
What are gamma rays?
This scientist accurately described vision, showing that light reflects off objects and travels to the eye.
Who is al-Haytham?
Galileo made major discoveries with this optical tool.
What is a telescope?
The bending of light as it moves from one material to another is called this.
What is refraction?
This part of the eye contains rods and cones.
What is the retina?
The device that converts light into electrical energy for digital imaging is called this.
What is a Charged-Coupled Device (CCD)?
Ole Romer was the first to measure this property of light.
What is the speed of light?
This technology reshapes the cornea to correct vision.
What is laser eye surgery?
These objects produce their own light.
What is luminous?
Insects have this type of eye, made up of many small lenses.
What is a compound eye?
In digital images, this term refers to the number of pixels per unit area.
What is resolution?