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It all has to do with the energy in the photons of light. The reason that ultraviolet and higher frequencies are harmfull is that each photon of light at those frequencies has enough energy …

Light is a form of electromagnetic radiation, a type of energy that travels in waves. Other kinds of electromagnetic radiation that we encounter in our daily lives include radio waves, …

Photosynthesis is the process by which photoautotrophs use light energy from the sun to make energy-rich carbohydrates. These carbohydrates are a source of stored chemical energy that …

Jul 17, 2016 · All organisms, including humans, need energy to fuel the metabolic reactions of growth, development, and reproduction. But organisms can't use light energy directly for their …

Introduction to spectroscopy Chemists study how different forms of electromagnetic radiation interact with atoms and molecules. This interaction is known as spectroscopy. Just as there …

Understanding place value is important in all kinds of math, from counting money to telling time to measuring things. Being able to compare numbers is also essential in many situations, like …

Sal finds the place value of 3 in 4356. Created by Sal Khan and Monterey Institute for Technology and Education.

The "light-dependent reactions" receive light, and provide energy for the Calvin cycle. After used by the Calvin cycle, the molecules go back to the thylakoids to be reenergized in a way.

The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. …