After studying in the Netherlands, he was appointed lecturer at the University of Uppsala in 1732 to fill the vacant position of Anders Celsius then on his grand tour of European observatories. From 1737 onwards, he studied together with Celsius the aurora phenomenon and a number of astronomy subjects (solar eclipse, comet like the one of 1744, latitude measurements).
In 1732, after studying abroad, he was appointed lecturer at the University of Uppsala to take over the position left by Anders Celsius. From 1737 onwards, he worked alongside Celsius on aurora studies and other astronomical subjects (solar eclipses, comet like the one in 1744, latitude measurements).