20/40 vision means that the test subject sees at 20 feet what a normal person sees at 40 feet. Another way of saying this is that a person with 20/40 vision has vision that is only half as good as normal-or, objects must be at half the normal distance for him to see them.
Answered by The Community. Making the world better, one answer at a time. The term of the compromise 1850 was a group of five bills, passed September 1850, which defuse a four year confrontion between slave states of the south & free states of the north.nswered by The Community. Making the world better, one answer at a time. The term of the compromise 1850 was a group of five bills, passed September 1850, which defuse a four year confrontion between slave states of the south & free states of the north.
The Missouri Compromise of 1820 admitted Missouri as a slave state,  and Maine as a free state, to keep the balance of slave/non-slave  states equal in Congress. It also est â¦ ablished the 36-30 line, and  said that slavery would not be allowed above that line except for  in Missouri.   The Missouri Compromise was in 1820 - it determined the slave/free status of new states within the territory acquired from France in the Louisiana Purchase.  â¦    The Compromise of 1850 did the same thing for the territories acquired from Mexico after the Mexican war.