Quantitative Untersuchungen über die Absorption der menschlichen Haut von ultravioletten Strahlen

Relative efficiency of pigment and horny layer thickness in protecting the skin of Europeans and Africans against solar ultraviolet radiation*

“…Fig. 3 Hasselbalch, 1911) and it is surprising that the possibility of obtaining clean sheets of stratum corneum in this way has not been previously realized. Immediately beneath this layer lies the stratum granulosum which is the seat of damage from ultraviolet radiation and, therefore, the mechanisms protecting against injury from these rays must be sought in the superficial horny layer.…”

The Radiation of Heat From the Human Body. Iv. The Emission, Reflection, and Transmission of Infra-Red Radiation by the Human Skin

“…Although the absorption and reflection by skin of ultra-violet and visible radiation has been studied extensively, beginning with the spectrographic observations of Hasselbalch (1) in 1911, there has been relatively little investigation of these properties of the skin in respect to the infra-red region of the spectrum. This is especially true of the spectroscopic study of the skin in relation to infra-red radiation, as most of the investigations reported in the literature have been carried out by means of filters.…”

Problems in ultraviolet polymerization of embedding media for electron microscopy

“…It was not merely the fact that the tissue was black as a result of osmication that was responsible for the poor penetration of UV radiation. Earlier physicomedical studies on transmission of UV radiation through human and mouse skin demonstrated that fresh skin only 0.1 mm thick will stop about 99-5O1, of UV radiation of a 220-330 nm wavelength (Hasselbalch, 1911;Hansen, 1948). This limited penetration of UV light in tissues may also be partly responsible for the difficulty in embedding frozen-dried tissue (where osmium has not been applied) Fig.…”