The human eye is a complex sensing device for visible light. The optic nerve needs a minimum of 2. 0 × 10−17 j of energy to trigger a series of impulses that eventually reach the brain. How many photons of blue light (475 nm) are needed?

What is life ? a: hell b: gods bible c: or depression

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Winds are formed from the sun's uneven heating of the earth's atmosphere. the wind patterns are altered by bodies of water, different landforms, and plant cover. because of this, the wind is considered a form of