What is the unit used to measure the thickness of the ozone layer? Scientists measure the amount of ozone gas in a column of air. To measure this, they use Dobson units (DU). Dobson was one of the first scientists to research ozone. One Dobâ¦son unit indicates 0.01 millimeter thickness of ozone gas in a column.
By common definition, a year is the length of time the earth takes to revolve around the sun in its orbit. The total number of days in a year is approximated to be about 365.24 days. However, this length varies based on the mode calculation used. The year calendar used is in sync with the four seasons experienced.
How many days are in 6 decades? A decade is ten years, a non-leap year year contains 365 days, in ten years either two or three leap years will fall. Therefore in ten years there will be 10 times 365 days pl â¦ us two more for the two leap years which makes 3,652 days in a decade, or three more for th three leap years which makes 3,653 days in a decade.