Note 7 — SUNLIGHT AND INFANTILE PARALYSIS
Reading edition
The length of the very short X-rays was accurately determined by a new method developed by Compton and Doan in 1925, and was found to be about three billionths of an inch.
Reading edition
The length of the very short X-rays was accurately determined by a new method developed by Compton and Doan in 1925, and was found to be about three billionths of an inch.