7 July

27 FEB. 2004 Data di pubblicazione 1448 Visualizzazioni

1816: On 7 July 1816, Rudolf Wolf was born.

Wolf was a Swiss astronomer and astronomical historian. Wolf's main contribution was the discovery of the eleven-year sunspot cycle. He was also the co-discoverer of its connection with geomagnetic activity on Earth.

In 1849 he devised a system now known as Wolf's sunspot numbers. This system is still in use for studying solar activity by counting sunspots and sunspot groups.


1668: On 7 July 1668, Isaac Newton received his Master's degree from Trinity College at the University of Cambridge, UK.


Link correlati


rimani aggiornato

Iscriviti alla nostra newsletter per ricevere le ultime notizie, gli aggiornamenti sulle missioni e approfondimenti esclusivi direttamente nella tua casella di posta. Sii tra i primi a conoscere i nostri prossimi progetti e le nostre scoperte.