Walk in the Light
Light enters a healthy human eye through a lens and is focused on this part of the eye that has rods and cones that absorb light.
What is the retina?
Isaac Newton started the field of studying the properties of light called this
What is spectroscopy?
This object can separate light into colors. Newton used it.
What is a prism?
A colored material that is used to change the color of other substances.
What is a pigment?
Lenses that reflect glare are referred to as these.
Polarized lenses
This is the speed of light
What is 186,000 miles per second
Materials that only absorb or reflect light, no light passes through
What are opaque materials?
Transparent materials that selectively transmits light
What are filters?
Light of only one wavelength that travels in one direction and does not spread out. A laser is an example of this type of light.
What is coherent light?
These devices use lasers to read bar codes. (Reads reflected light and converts the info to digital signals)
What is an optical scanner? (Grocery scanner)
Light acts as these 2 things
What is a particle and a wave?
materials that transmit light, but also scatter it. Light passes thru, images do not.
What are translucent materials?
Light generated by heating a piece of metal until it glows
What is incandescent?
Light from an ordinary light bulb is described as this, can have more than one wavelength and can spread out.
What is incoherent light?
This virus currently has China in lockdown on travel and has already claimed over 400 lives. (This question was eerily created 4 years ago.)
What is the coronavirus?
These are the names of particles of light
What is a photon?
These are the colors of the light we can see
What are ROYGBIV
Light generated by using phosphorus to convert U.V. radiation to visible light.
What is fluorescent light?
When a wave source is moving toward or away from an object the wavelength changes known as this effect
What is the Doppler effect?
This other type of cell in the retina works better in dim light and is useful for night vision.
What are rods?
The name of the light that people can see or can be broken up into different colors is called this
Visible light or white light
Materials transmit light without scattering it. Light and image pass thru.
What are transparent materials?
An image of a distant object produced by the refraction of light through air layers of different densities
What is a mirage?
A technique that produces a hologram is called this
What is Holography?
This type of cell in the retina allows you to distinguish colors and details shapes of objects. Most effective during the day.
What are cones?