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May 16, 2024 · Today, Columbia University neuroscientists identify, for the first time, brain-cell circuitry in fruit flies that converts raw sensory signals into color perceptions that can guide behavior. Their findings were published in the journal Nature Neuroscience.
2 days ago · To explain the photoelectric effect, Einstein introduced the idea that light itself is made of discrete units of energy. In 1926, Gilbert N. Lewis popularized the term photon for these energy units.
May 20, 2024 · Quantum mechanics, science dealing with the behavior of matter and light on the atomic and subatomic scale. It attempts to describe and account for the properties of molecules and atoms and their constituents—electrons, protons, neutrons, and other more esoteric particles such as quarks and gluons.
2 days ago · In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the hydrogen carrier NADPH and the energy-storage molecule ATP. During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.
May 31, 2024 · The concept originated (1905) in Albert Einstein’s explanation of the photoelectric effect, in which he proposed the existence of discrete energy packets during the transmission of light. Earlier (1900), the German physicist Max Planck had prepared the way for the concept by explaining that heat radiation is emitted and absorbed in distinct ...
- The Editors of Encyclopaedia Britannica
May 15, 2024 · The effect is frequently characterized as the ejection of electrons from a metal plate when exposed to light. The radiant energy may be infrared, visible, or ultraviolet light, X-rays, or gamma rays; the substance could be solid, liquid, or gas; and the particles discharged could be ions or electrons. Characteristics of Photoelectric Effect:
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5 days ago · Interference of light is the phenomenon that occurs when two waves of light meet and the crest of one wave cancels out the trough of the other wave. One of the fundamental properties of light is its ability to interfere with itself.
