The researchers also found that single atoms of metal could transmit up to 100 microamperes of current. The extracted beam current is 400 microamperes and can be extracted simultaneously in any split ratio from two extraction ports on opposite sides of the cyclotron. While earlier systems required about 500 microamperes at five volts now it is less than 100 microamperes.
Do you mean like how wide and how long? There are 43,560 square feet in an acre. If the land is a perfect square, it is 208.71 feet wide by 208.71 feet long. If the land is rectangular in shape, you would have to know at least the length of one dimension in order to figure the other. If the land is some other shape, it would depend.
There are 43,560 square feet in an acre. An acre is also equal to 4046.86 square meters or 4840 square yards. If you want to convert any unit of area to other you can use these : Land Area Calculator.