Light Energy

Some articles on light energy, energy, light:

Light-dependent Reactions - The Reaction Center
... It transfers light energy to a dimer of chlorophyll pigment molecules near the periplasmic (or thylakoid lumen) side of the membrane ... special pair in the reaction center becomes excited, it cannot transfer this energy to another pigment using resonance energy transfer ... pigment molecules can exist at specific energy levels ...
Light-dependent Reactions
... The light-dependent reactions, or photoreduction, is the first stage of photosynthesis, the process by which plants capture and store energy from sunlight ... In this process, light energy is converted into chemical energy, in the form of the energy-carrying molecules ATP and NADPH ... In the light-independent reactions, the formed NADPH and ATP drive the reduction of CO2 to more useful organic compounds, such as glucose ...
Photosynthetic Efficiency
... The photosynthetic efficiency is the fraction of light energy converted into chemical energy during photosynthesis in plants and algae ... by the simplified chemical reaction H2O + CO2 + energy → C6H12O6+ O2 where C6H12O6 represents carbohydrates such as sugars, cellulose, and lignin ... efficiency is dependent on how light energy is defined ...
Photoflash Capacitor
... The light energy emitted by a flash is supplied by the capacitor, and is proportional to the product of the capacitance and half the voltage squared photoflash ... The light energy of a flash is proportional to the capacitance and large variations are not acceptable, typical tolerance is -10+20% ...
Plant Pigments - Pigments in Animals - Pigments in Marine Animals
... are responsible for photo-protection, light-harvesting, and singlet oxygen scavenging in the process of photosynthesis ... The only light source in the deep sea, marine animals give off visible light energy called bioluminescence, a subset of chemiluminescence ... This is the chemical reaction in which chemical energy is converted to light energy ...

Famous quotes containing the words energy and/or light:

    The flattering, if arbitrary, label, First Lady of the Theatre, takes its toll. The demands are great, not only in energy but eventually in dramatic focus. It is difficult, if not impossible, for a star to occupy an inch of space without bursting seams, cramping everyone else’s style and unbalancing a play. No matter how self-effacing a famous player may be, he makes an entrance as a casual neighbor and the audience interest shifts to the house next door.
    Helen Hayes (1900–1993)

    Go where he will, the wise man is at home,
    His hearth the earth,—his hall the azure dome;
    Where his clear spirit leads him, there’s his road,
    By God’s own light illumined and foreshadowed.
    Ralph Waldo Emerson (1803–1882)