20 microns means 20 millionths of a meter or about 1/1300-inch.
For jewelry it refers to the thickness of the gold plating (usually) on silver base metal.
The thicker it is the higher the cost, but the more durable it is also.
0.02mm, 0.002cm, 0.00002m, 20000nm, 200000 angstroms, 20000000pm
There are 1000 microns in a mm. There are 5000 microns in 5 mm
millionths of what, if inch then 2.54 microns if metre then 100 microns
150 microns is about 0.005905512 inches.
125 microns = 0.125 millimeters
200 microns is about 0.007874016 inches.
20 microns is 0.002cm
On a watch case, plaque OR G 20 microns means that the case is solid gold. The 20 micron relates to the thickness of the gold plating.
100 microns is 20 times thicker than 5 microns
1 mm = 1000 microns. 20/1000=.02mm
This is the thickness of the gold plating on the lighter. 20u would be 20 microns
"20 microns" is a size measurement that has very little indeed to do with evaluating a piece of jewelry. More applicable would be someting like karat markings or carat weight.
.020
0,02
I assume you mean, how many microns in 0.0015mm. Well there are 1000 microns in a millimetre. In order to convert mm to microns, you have to multiply by 1000. 0.0015mmx1000 is 1.5 microns.
0.02um
A micron is a thousandth part of an mm. so 0.02 is equal to 20 microns
0.02 millimetres