The dial is coated with a compound of zinc sulfide mixed with copper, a substance which becomes luminescent when an electrical charge is applied.
(The dial; is coated; with a compound of zinc sulfide) (zinc sulfide; mixed; with copper, a substance) (a substance; becomes; luminescent; T:when an electrical charge is applied) (an electrical charge; is applied; )
The dial zinc sulfide a substance an electrical charge
is coated mixed becomes is applied
with a compound of zinc sulfide
with copper, a substance
luminescent T:when an electrical charge is applied