1. He was involved in perfecting spectrography and has been considered a predecessor of Bernard Lyot. 2. The spectrography experiments enabled a better understanding and subsequently the first glimpses of practical application. 3. The institute was established in 1946 by the government as the FOM Laboratory for Mass Spectrography . 4. Better spectrography in the 1950s showed that and water vapor absorption lines did not overlap completely. 5. His research focused on atmospheric spectrography . 6. Sometimes Doppler spectrography produces false signals, especially in multi-planet and multi-star systems. 7. Other modern tools include neutron activation, which involves the use of nuclear particle accelerators and mass spectrography . 8. Spectrography investigation of the process, led by J . A . Anderson, became widespread in the 1900s.9. It has a small reflecting telescope and also a scan mirror, and it can do long-slit spectrography . 10. However, its cost was about 20 % that of other similarly-sized telescopes in use today due to its optimization for spectrography .
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