Why do the usa and german governments have patents for sun simulators to be used in near space? Maybe this is why we have non existing till now UV-c .

in uv-c •  7 years ago 

Why do the usa and german governments have patents for sun simulators to be used in near space? Maybe this is why we have non existing till now UV-c .
MrMBB3333

uv-c
7 years ago by

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