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.
Measurements by infrared telescope, which is the most accurate way to measure an object so distant, suggests that Sedna has a diameter between around 777 and 1118 miles. This makes Sedna smaller than Pluto, which is 1400 miles in diameter. At first scientists believed Sedna had a very slow rotation, about every 40 days.