Testing for Radon. Perform a radon test before you close on the property. Use EPA testing guidelines to choose a test and tester. Ask the tester how you can prevent device interference during the test. If radon levels are above 4 pCi/L, or your own stated maximum, use mitigation techniques for reduction, then test again. If Radon Levels Are Too High
They did research and came up with this spectacular invention of the worldâs most sensitive scale. The device can significantly measure the smallest unit of a mass, or also known as the yoctogram which is just one septillionth of a gram.
One contender for the smallest thing in the universe is the singularity at the center of a black hole. (Shown here, an artist's drawing of a black hole pulling gas away from a companion star. The answer to the enduring question of the smallest thing in the universe has evolved along with humanity.