Two spotlights point towards a stage. Where the spotlight intersect, the light appears to be brighter. How does this phenomenon support the wave model of light?

Complete question:

Two spotlights point towards a stage. Where the spotlight intersect, the light appears to be brighter. How does this phenomenon support the wave model of light?

A. It's the result of refraction

B. It is the result of interference

C. It is the result of the Photoelectric effect

D, It is the result of blackbody radiation

B. Interference

Explanation:

Interference is based on the wavy nature of light. The interference of two or more luminous waves is the interaction between them. The luminous waves combine when they meet at the same point in space, and their effects superpose. This interaction produces a new wave that is the sum of its components. Those waves that are in phase reinforce each other, while those opposite ones are canceled. The interference event will be noticeable if the involved waves propagate in the same direction and keep constant the phase difference.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.