Another word for maunder

Maunder's argument to this effect is unanswerable.'

Maunder.

sunspot activity in the latter half of the 17th century called the Maunder Minimum.

There was a period of very low sunspot activity in the latter half of the 17th century called the Maunder Minimum.

Maunder and Mrs Maunder found that different spots in the same zone differ more than do the means for different zones, while a long-lived spot settles down to give more consistent results than are furnished by spots of one apparition.