Many biological systems are well-described by the laws of statistical physics. a simple yet often powerful approach is to think of a system as having only two states. for example, an ion channel may be open or closed. in this problem, consider a simple model of membrane channels for ions: the system is described by a boltzmann distribution with only two states, with energies ε1 (open) and ε2 (closed). assume the "open" state is the state of higher energy, so that ε1 > ε2.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

hope this ! this is not copied! search it up, it's free of plagiarism!

it was given as a lesson and guide for prayer.