Conversation so far:
who played in the movie samson and delilah
The 1949 film Samson and Delilah stars Hedy Lamarr and Victor Mature in the title roles, George Sanders as the Saran, Angela Lansbury as Semadar, and Henry Wilcoxon as Ahtur.
what is the premise of the 1949 film samson and delilah
When strongman Samson rejects the love of the beautiful Philistine woman Delilah, she seeks vengeance that brings horrible consequences they both regret.
how did the 1949 film samson and delilah do
Praised upon release for its Technicolor cinematography, lead performances, costumes, sets, and innovative special effects, the 1949 film Samson and Delilah was a box-office success.
what else is hedy lamarr known for besides the 1949 film samson and delilah
Hedy Lamarr was part of 30 films in an acting career spanning 28 years, and co-invented an early version of frequency-hopping spread spectrum.

Question: what did lamarr invent
Self-contained rewrite: what did hedy lamarr invent