Category 1
What is Electromagnetic wave?
A transverse wave composed of an oscillating electric field and a magnetic field that oscillates perpendicular to the electric field.
what is visible spectrum?
Electromagnetic spectrum that the human eye can view
what is infrared light?
Electromagnetic radiation in the spectral band lower than that of visible light and higher than that of microwaves.
what is diverging lens?
a type of lens that causes parallel rays of light to spread out or diverge.
what are the subtractive primary colors?
opposing colors to the traditional red, green, and blue.
what is the law of reflection?
The angel of reflection equals the angel of incidence.
what is electromagnetic spectrum?
Electromagnetic spectrum is electromagnetic radiation.
What are microwaves?
Microwaves are a form of electromagnetic radiation with wavelengths ranging from about one meter to one milometer.
what is convex?
it is curved outwards like the surface of a sphere so its middle is thicker than its edges.
what is cyan?
Cyan is the color between blue and green on the visible spectrum of light.
what is particle theory?
a stream of particles that all move in the same direction.
what is ultraviolet-light?
it is a type of electromagnetic radiation that has a higher frequency and a shorter wavelength than visible light. It is situated beyond the violet end of the visible spectrum.
what is angel of incidence?
Angel formed in between a ray propagated on a surface and the line normal to the point of occurrence on the same surface.
what is concave?
concave is a surface or a line that is curved inward.
what is magenta?
Magenta is a secondary color made by combining equal amounts of red and blue light at a high intensity.
what is wave theory?
wave theory is a theory of light
what are X-rays?
X-rays are a form of electromagnetic radiation that can pass through most objects including the body. they are produced by the collision of a beam of electrons with a metal target in an X-ray tube. They have higher energy and can cause ionization of atoms and biochemical changes in living tissue. They are used to generate images of tissue and structure inside the body for medical purposes.
what is angle of reflection?
the angel made by a reflected ray with a perpendicular to the reflected surface.
what are rods?
a type of photo-receptor cell in the retina.
what is yellow?
Yellow in physics light in the wavelength range of 570-580 nanometers which is in the middle of the visible spectrum.
what is quantum-mechanical theory of light?
The quantum theory of light tells us about how matter and light act as a particle.
What are gamma rays?
Electromagnetic radiation of the shortest wavelength and highest energy. Gamma rays are produced in the disintegration of radioactive atomic nuclei and in the decay of certain subatomic particles.
what are Fiber optic
A fiber-optic cable contains anywhere from a few to hundreds of optical fibers within a plastic casing.
what are cones?
a type of photo-receptor cell in the retina.
What are the colors of the visible spectrum, longest wavelength first?
Red, orange, yellow, green, blue, indigo, violet