topographical

To explain how flat the mirrors are, Dr Frank Rohmund, president of semiconductor manufacturing optics at Zeiss, uses a topographical analogy.

The end product looks similar to a topographical chart.

To explain how flat the mirrors are, Dr Frank Rohmund, president of semiconductor manufacturing optics at Zeiss, uses a topographical analogy.

Two years later, he joined the Topographical Survey of India and started mapping central India, Rajasthan and the Himalayas.

Yet he is known for meticulously weaving multicolored computer cables, cellphone circuitry and other digital detritus into vast, topographical wall art.