With a Geiger counter.
You cannot measure radioactivity in litres
radioactivity
to measure radioactivity and to make maps
A geiger counter measures radioactivity.
The unit of radioactivity that is equal to one decay per second is called the "becquerel" (Bq). It is a standard unit used to measure the activity of a radioactive substance, indicating how many disintegrations or decays occur in one second. The becquerel is named after Henri Becquerel, who discovered radioactivity.
Metrics can be used to measure defects. For example, there are several different types such as defect category, closed defect distribution, and defect removal efficiency.
Defect Seepage is the defect creepage from one module to other or from one phase to subsequent phases.
The isotope 22Na is radioactive but the concentration is extremely low. A measure of the radioactivity is not necessary.
The mass is measured with a balance.The radioactivity is measured with a gamma-radiometer.
i don't know but for sure their must be some method to measure the radioactivity from distance. and fist of all radioactivity is phenomenon in which radioactive elements emit some rays so the intensity of those rays can be measured from the distance
Short answer: Yes, through observation you can tell what happens in a given interval of time.Long answer: It is not possible to measure everythingthat happens in a given interval of time, but only atomic (individual) changes. For instance, if you wanted to measure radioactive decay over a period of time, you would measure the amount of radioactivity at a starting point, measure a set amount of time passing then measure the level of radioactivity at the end. Subtracting the last measured radioactivity from the initial measurement will give you the amount of radioactive decay. In a simpler example, you could measure your height on January 1st of 2012, then again on January 1st of 2013 to see how your height has changed over the course of one year.
Geiger-Muller counter, scintillation detector, ionization chamber, and Cherenkov detector are common instruments used to detect and measure radioactivity. Each has its own mechanism for detecting the presence of ionizing radiation and measuring its intensity.