San Francisco : Architect and Engineer, Inc · leaf 64
or prevent absenteeism inschools, factories and office buildings, due to in-fections of the respiratory tract. Germicidcd Tubes There are well over 1000 hospitals now usinggermicidal tubes in nurseries, surgeries or con-tagious disease wards. Infants Hospital, Boston,Mass., installed 40 tubes which… … Some information on Angstrom units connectedwith germicidal tubes shows ultraviolet wave-lengths of energy centering around 2537 Angstromunits — the most effective germ-killing energy —while emitted from the sun, are absorbed by theearths atmospehre. An Angstrom is a unit ofmeasurement for…
Architecture · Building
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