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A recent "Cosmos" episode recounted that it was Clair Patterson who used the worlds very first "ultra clean room" to count the parts per million of lead in a me
by wernerb 12y ago
A recent "Cosmos" episode recounted that it was Clair Patterson who used the worlds very first "ultra clean room" to count the parts per million of lead in a meteorite to determine the age of the earth. Wikipedia says this happened in 1953. This is 9 years before the ultra clean room patent in 1963.
- tomswartz07 12y agoThere were multiple variations of 'ultra clean rooms' existing around that time. The one in this article is considered the most revolutionary because of the air-cycling features.