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https://divulgacao.iastro.pt/en/2021/12/14/espresso-he_0514-441-2/ ESPRESSO spectrograph measures fundamental constant of the Universe – Outreach The ESPRESSO spectrograph, installed at the European Southern Observatory’s Very Large Telescope, was recently used to measure the fine-structure constant, one... fundamental constant of the espresso spectrograph measures https://cris.ariel.ac.il/ar/publications/measurable-values-numbers-and-fundamental-physical-constants-is-t-3/ Measurable values, numbers and fundamental physical constants: is the boltzmann constant κB a... physical constants is the measurable values numbers