... The plate limit for such exposures, originally about 17.5-18 m in a system close to B , gradually somewhat deteriorated, mainly because of lightpollution problems in Crimea . ...
... Astronomy with the Public in the Big Data Era ; FM 20 – Astronomy for Development ; FM 21 – Mitigating Threats of LightPollution & Radio Frequency Interference ; FM 22 – The Frontier Fields: Transforming our Understanding of Cluster and Galaxy Evolution ...
... The large scatter in observations nearest the time of peak activity at 235.3 ± 0.1 may be the result of an increasing proportion of observations occurring under light-polluted skies as compared to earlier epochs. ...
... For the purpose of this page the term Light Emitters includes Semiconductor Emitters based on thin film of Lead Halcohenides and Light Emitting Diodes based on III-V heterostructures (LPE technology). ...
... For example,pumping waste gases from a power station does not get rid of them.Cars and factories also pollute the air we use. ... It destroys the ozone layer which protects the Earth from the dangerous light of the Sun.. ...
... It forms in two places: high in the atmosphere, between 18 and 50 km (peak at 25) where it is beneficial in absorbing ultra-violet light, and near the ground, part of urban air pollution. ...
... These data show that water pollution can be detected under conditions in which algal concentration does not yet decrease markedly, for example, at early stages of pollution or under low concentration of pollutants. ...