The Bat-Signal is a distress signal device appearing in American comic books published by DC Comics, as a means to summon the superhero, Batman. It is...

means. Bat-Signal When Batman is needed, the Gotham City police activate a searchlight with a bat-shaped insignia over the lens called the Bat-Signal, which...

produce signals to jam bat echolocation. Many moth species have a hearing organ called a tympanum, which responds to an incoming bat signal by causing the moth's...

See media help. A bat detector is a device used to detect the presence of bats by converting their echolocation ultrasound signals, as they are emitted...

Angeles projected the Bat-Signal on City Hall as a tribute to West, and in his hometown of Walla Walla, Washington, the Bat-Signal was shone upon the landmark...

those committed by supervillains. Generally it is Gordon who uses the Bat-signal to summon Batman, and it has become a running joke of sorts that Batman...

theaters. Leah Asmelash (20 September 2019), Here's where you can see the Bat Signal on Batman Day this Saturday, CNN Timothy Donohoo (19 September 2019),...

convert the new telescope into a giant freeze ray, while Ivy uses the Bat-Signal to contact Robin. Robin attempts to go after Ivy alone, but Batman convinces...

unveils the Bat-Signal. Batman leaves the police a note, promising to defend Gotham should crime strike again, and asking them to use the Bat-Signal to summon...

these displays are the "Bat-Wave" warning signals, an alternate way of calling upon the Caped Crusader before the Bat-Signal went into service. As a throwback...