Why does atlas beg perseus to show him medusas head

Atype of construction where tha main load bearing element are hung for suspension cables that are then suspended from vertical supports anchored into the ground or a riverbed

While fragileworks of art might be best preserved in a locked box, museums routinely display such objects. why do museum professionals feel it is important to share these artifacts?

Poussin was responsible for establishing what as a key component of 17th century french art