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Whistleblowing (also whistle-blowing or whistle blowing) is the activity of a person, often an employee, revealing information about activity within a...

threat is usually determined by how long the sentry whistles. The sentry continues to whistle the alarm until the entirety of the pack has gone to safety...

earliest use of steam whistles was as boiler low-water alarms in the 18th century and early 19th century. During the 1830s, whistles were adopted by railroads...

in which birds gather together in flocks to counter a predator. The alarm-whistle warns other birds about the proximity of a Eurasian sparrowhawk, a northern...

population. Whistles were used by police in the 19th century. Steam whistles have been used on locomotives, ships, and in factories as alarm devices. With...

intermittent "shrill whistle", in the manner of a personal alarm. According to the Suzy Lamplugh Trust, the best way to use a personal alarm is to activate...

out before the meeting intent on leaving the town. That evening, the alarm whistle sounds, signaling another mine disaster. Several men are injured, and...

Other researchers have shown that some forms of alarm calling, for example, "aerial predator whistles" produced by Belding's ground squirrels, do not...

so as to avoid panic or undue alarm. Signals can be in the form of blasts on alarm bells, sounds on the ship's whistle or code names paged over the PA...

are named for the alarm calls of the females. In addition to the females' alarm call, both the male and female make a shrill, whistling sound. These calls...

after completing a job, Conan, Ran, and Kogoro hear the sound of an alarm whistle and a scream. The sound leads them to security guard Nezu Goro, who...

or more short blasts followed by one long blast on the ship's whistle and internal alarm system. Within 24 hours of embarkation of all passengers, the...

lines don't sound the signal on the horn or whistle) and by the ship's internal alarm (such as fire alarm bells accompanied with flashing strobe lights...

individual, to affect the behavior of the receiving individuals. There are alarm pheromones, food trail pheromones, sex pheromones, and many others that...

ships, but this was labor-intensive and dangerous. In the United States, whistles were also used where a source of steam power was available, though Trinity...

threat is usually determined by how long the sentry whistles. The sentry continues to whistle the alarm until the entirety of the pack have gone to safety...

electronically driven speakers. Fire sirens are often called fire whistles, fire alarms, or fire horns. Although there is no standard signaling of fire...

into the mine that morning perished. Meanwhile, on the surface, the alarm whistles brought family members and miners from other mines to the area of the...

Speaker | Federal Signal". www.fedsig.com. Retrieved 9 June 2023. "Whistle Alarm". Civil Protection. "National early warning system". National Emergency...

levels of alarm whistles can be distinguished. The presence of a human, dog, or fox is signaled by a series of moderately intense whistles – then marmots...