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LED-lighting influences the activity of bats

The widespread replacement of conventional bulbs in street lighting by energy-saving light-emitting diodes (LEDs) has considerable influence on bats as urban nocturnal hunters. Opportunistic bats lose hunting opportunities ...

dateSep 01, 2016 in Ecology
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Little projectors that pack a big punch

An image projected on a slanted or curved surface appears distorted and can appear out of focus in some areas. A high-intensity mini-projector about the size of a Euro cent coin from the Fraunhofer IOF in Jena, Germany can ...

dateMay 11, 2016 in Engineering
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