No coin nor oath required. For personal study only.
the winter, tile Council on Physical Medicine of the American Medical Association requires for acceptance that tile window glass have a transmission of not less than 3o per cent. at 3o24.'~, or roughly 3 microwatts/cm 2 of solar radiation in this wave band. Since sunburnpreventive creams transmit less than ~ per cent. in the wave band tit 26ooA, and since the estimated intensity of the incident solar radiation is not greater than a few billionths of the threshold, the conclusi{m arrived at is that even if ultraviolet solar radiation of wave lengths 22oo.~ to 28oo:\ reaches the earth's surface it is biologically ineffective.
This conclusion seems to be supported by the fact that the human skin has not developed a defensive tanning reaction for wave lengths shorter than about 28oo.~.
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The use of renewable biomass, such as ethylene glycol (EG), for hydrogen production offers a more sustainable system compared to natural gas and petroleum reforming. For the first time, the reaction thermodynamics of steam reforming and sorption enhanced steam reforming of EG have been investigated.