1. Throughout means in all parts of a place.
There are spiders throughout the building.
2. Throughout means during an entire period of time.
She stays at the beach throughout the summer.
Avataars of Lord Shiva
After sacrificing herself in Dakshas yagya, when Sati took rebirth in Himalayas house and worshipped lord Shiva for years to make him her husband again. To take Parvatis test, Lord Shiva had taken this form.