Great masses, as those of the great planets, would not be attracted with a force proportional to the mass because of the hindrance of the interposed portions.
There was, of course, no hindrance to a man having more than one job.
In reviving that theory at the beginning of the 19th century, Thomas Young stated his conviction that material media offered an open structure to the substance called aether, which passed through them without hindrance " like the wind through a grove of trees."
Whatever furthers us in our progress towards a knowledge of God is good; every hindrance is evil.
The group of rays coming from the left half of the objective can continue its way without hindrance to the right eye.