äratuskella

Äratuskella is an Estonian term that translates to "alarm clock" in English. An alarm clock is a clock that is designed to wake a person up at a specific time. This is typically achieved through an audible signal, such as a ringing bell, a buzzer, or a musical tone. Modern alarm clocks often incorporate additional features beyond simply telling time and sounding an alarm. These can include radio tuners, simulated sunrise lighting, or even digital displays that show the date and temperature.

The primary function of an alarm clock is to provide a reliable method for individuals to ensure they wake up at a predetermined hour, crucial for adhering to schedules, attending appointments, or starting their day. Early alarm clocks were purely mechanical devices, relying on winding mechanisms to power their internal workings and trigger the alarm. The advent of electronics revolutionized alarm clock technology, leading to quartz-controlled movements for greater accuracy and a wider range of alarm sounds and functions. In contemporary society, alarm clock functionality is also frequently integrated into smartphones and other personal electronic devices, serving as a ubiquitous tool for time management and wake-up reminders.