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Proceedings Paper

Measurement of the speed of light from extraterrestrial sources
Author(s): Jingshown Wu; Yen-Ru Huang; Hen-Wai Tsao; San-Liang Lee; Shenq-Tsong Chang; Ho-Lin Tsay; Hong-Tsu Young
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Paper Abstract

The conventional measurements of the speed of light were performed before the early twentieth century. Only few used extraterrestrial sources and got the result with large uncertainty. We design a transmitter to modulate the rays from the local infrared light source and the extraterrestrial sources simultaneously into pulses. Both are received by a distant receiver. We have the white light travelling exactly along the path of the starlight pulses for calibration. It is found that the travel times of Aldebaran and Capella pulses are longer than that of Vega pulses. The results indicate that the speeds of starlights are different.

Paper Details

Date Published: 1 September 2015
PDF: 18 pages
Proc. SPIE 9608, Infrared Remote Sensing and Instrumentation XXIII, 96080E (1 September 2015); doi: 10.1117/12.2186922
Show Author Affiliations
Jingshown Wu, National Taiwan Univ. (Taiwan)
Yen-Ru Huang, Academia Sinica (Taiwan)
Hen-Wai Tsao, National Taiwan Univ. (Taiwan)
San-Liang Lee, National Taiwan Univ. of Science and Technology (Taiwan)
Shenq-Tsong Chang, National Applied Research Labs. (Taiwan)
Ho-Lin Tsay, National Applied Research Labs. (Taiwan)
Hong-Tsu Young, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 9608:
Infrared Remote Sensing and Instrumentation XXIII
Marija Strojnik Scholl; Gonzalo Páez, Editor(s)

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