Which component of light interacts with the Polaroid material? What is a dark matter? What kind of ferromagnetic material is used for coating magnetic tapes in a cassette player, or for building a modern computer? How much energy would it take to make a wormhole?
A digital image is composed of a rectangular array of numbers that are used to form an image. It has both geometric and radiometric properties. Each number in the array represents a pixel. A pixel in its basic form is a number in an array that describes the brightness and color of a po...
In 1900, Max Planck suggested instead that photons must be particles because of the way radiation behaves. This opened the door for Einstein to suggest in 1905 that light is both particles and waves. His explanation is based on the photoelectric effect. This is the way a sheet of metal emit...
What is a photon? Learn about photon, photon emission and the properties of photon wavelengths, and delve into the complexities of photon energy. Related to this Question What is the transfer of energy as electromagnetic waves called? What is a quantum of electromagnetic energy called?
The photoelectric effect reveals that when light — composed of packets of energy called photons — interacts with specific materials, it frees electrons from their atomic bonds. A photon’s energy is directly related to its frequency. Only photons with sufficient energy levels (usually from the ...
Composed of tiny particles of electromagnetic energy, photons are the stuff of light. When photons are absorbed by a photovoltaic cell, which contains a semiconducting material such as silicon or platinum, the energy from the photon is transfered to an electron in an atom of the \"solar cell...
mitosis. Chromatin is composed ofDNAand skeletalproteinsand is called a nucleosome when wrapped around these proteins in sequence. Even more tightly wound nucleosomes are called chromatin fibers. Chromatin condenses DNA enough to fit within a cell's nucleus. Condensed chromatin fibers form chromosomes...
Using gravitational lensing and computer modeling, they found that simulated dark matter composed of axions aligned more with our working understanding of light and gravity than simulated dark matter composed of WIMPs. This still doesn't guarantee dark matter is made up of axions, though; it just...
The word "year," is normally a unit of time, but light-years measure distance. M. Aurelius/Shutterstock A light-year is a way of measuring astronomical distances in space. That doesn't make much sense because "light-year" contains the word "year," which is normally a unit of time. ...
The colors of light that we see are a result of the way that light interacts with our eyes and our brain. Different wavelengths and frequencies of light are responsible for different colors. The visible spectrum is composed of the colors of the rainbow: red, orange, yellow, green, blue, ...