Framed Print : Light testing
Framed Photos from Science Photo Library
Light testing
Light testing. Long-exposure photograph showing a gonio-photometer (goniometer for short) at the Osram Sylvania Light Research Laboratory, USA. This testing device obtains measurements of light luminance over several wavelengths. The light bulb is placed at the centre of tha goniometer and its light is reflected onto a mirror located at the end of a rotating arm. Light from the mirror is in turn directed onto a sensor. The rotating arm is necessary to record light output over a large range of angles. The goniometer enables researchers to test new energy efficient long- life light bulbs
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6439043
© VOLKER STEGER/SCIENCE PHOTO LIBRARY
2005 Analysing Detecting Domestic Efficiency Energy Efficient House Hold Lamp Light Light Research Long Exposure Machine Measuring North American Operating Osram Sylvania Rotating Testing Us A Goniometer Laboratory Luminance Physical
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