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The dobson unit is a measure of of ozone concentration. It is the de facto for measuring it.

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10y ago

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Unit used to measure the magnitude of current?

The unit used to measure the magnitude of current is the ampere (A). It represents the flow of electric charge through a circuit.


How the ozone layer will be measured?

It is measured by how much characteristic radiation it allows to pass. The units are Dobson units, indicative of "total column ozone". Total Column Ozone Density, based on absorption of key UV wavelengths through the entire atmosphere on a straight line path. The unit is the Dobson.


How many revolutions of the disc in energy meter is taken as 1 unit?

The number of revolutions the disk in a kWh meter needs to make to produce a read increase of one unit (1 kWh) is 1000 divided by the disk constant. The disk in a meter with a 7.2 constant (Kh = 7.2) will have to make 138 and 8/9 revolutions to make the right most dial in the meter increase its read by one unit.


What is the thikness of the ozone layer?

Several units of measurement are commonly applied to ozone: ppm - parts per million, usually parts per million volume (ppmV), detailing the number of molecules of ozone per million molecules of "air". Dobson Units (DU) - The number of ozone atoms in a column of atmosphere with a width and depth of a centimeter2 or meter2, and the entire height of the atmosphere from Earth's surface to the Sun (or the satellite measuring it). %wt or %vol - for a given amount of gas, how much of its mass (%wt) or volume (%vol) is just ozone. (Common for ozone generators.) mass/unit volume, pascals (partial pressure), and I won't atempt to chew up these definitions...


Does a reading of 320 DU or 275 DU indicate total ozone overhead?

No, a reading of 320 DU or 275 DU does not indicate total ozone overhead. Total ozone typically ranges from about 200 to 500 Dobson Units (DU), so these values fall within that range. To determine total ozone overhead, one would need to evaluate a vertical column of ozone extending from the Earth's surface to the top of the atmosphere.