Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Ultraviolet Installations of Beneficial Action

Not Accessible

Your library or personal account may give you access

Abstract

If the human skin is not exposed to solar radiation (direct or scattered) for long periods of time, disturbances will occur in the physiological equilibrium of the human system. The result will be functional disorders of the nervous system, a vitamin D deficiency, a weakening of the body’s defenses, and an aggravation of chronic diseases. Sunlight deficiency is observed more particularly in persons living in the polar regions and in those working underground or in windowless industrial buildings. The simplest and at the same time the most effective measure for the prevention of this deficiency is the irradiation of human beings by means of uv lamps. Such irradiation is conducted either in special rooms called photaria or directly in locations where persons are regularly present—in workshops, schools, hospitals, etc. As a rule, the daily dosage of uv does not exceed half of the average dose which produces a just perceptible reddening of an untanned human skin. It is preferable to use fluorescent lamps which use phosphorous and have maximum emission of 315 nm. The beneficial effect of uv irradiation has been confirmed by many years of experience. Ultraviolet irradiation is also beneficial for agricultural animals. In addition to the lamps used for irradiation of human beings, high pressure mercury lamps in a quartz envelope are used to irradiate animals. Irradiation doses vary according to the species and age of the animals.

© 1967 Optical Society of America

Full Article  |  PDF Article
More Like This
Vacuum Ultraviolet Research

James A. R. Samson
Appl. Opt. 6(3) 403-408 (1967)

A High Intensity Flash Lamp for Vacuum Ultraviolet Photochemical Studies

B. C. Roquitte
Appl. Opt. 6(3) 415-416 (1967)

Ultraviolet Measurements in Planetary Atmospheres

W. G. Fastie
Appl. Opt. 6(3) 397-402 (1967)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved