He confirmed it in a paper of 1913 but Freundlich had to go against the wishes of the Director of the Berlin Observatory who strongly advised him against publishing such a revolutionary idea.
Siya nakumpirma na ito sa isang papel ng 1913 ngunit Freundlich had to go laban sa mga hangarin ng mga Direktor ng Berlin obserbatoryo na masinsinang ipinapayo sa kanya laban sa publishing tulad ng isang rebolusyonaryong ideya.