A less dramatic but still significant depletion of. ozone levels was recorded around the globe. With less. ozone in the atmosphere, more ultraviolet (UV) radia-. tion strikes Earth, causing more skin cancer, eye dam-. age, and possible harm to crops.
There are 1.0E-6 meter in a micrometer. 1 Micrometer is equal to 1.0E-6 Meter. 1 um = 1.0E-6 m. A micrometer, or micron, is a unit of length sometimes used in SI as a 1Ã10â6 of a meter. This is a quite specific measurement unit used in science (i.e. for measuring various types of wavelength, etc.) or in industrial technology.
For reference, 100 microns is 0.1 millimeter, which is the size of a fine grain of sand and as a sunscreen, would be useless because it would be impossible to evenly apply (and gritty!). All mineral sunscreens on the market are micron-sized, micronized or nano.