magic just kidding a eletro magnet
It is used in fire alarm and in earthquake alarm.
by the vibration of the whole bell , it makes a sound
Two things you can do to help remedy the situation: 1. Get a LOUD alarm clock. Test it out at the store before you buy. 2. Put the alarm clock across the room so it forces you to get up and get out of bed.
Jocelyn Bell
Once the alarm goes off - and you press the snooze button, it starts an internal timer for a given period (usually 6-10 minutes depending on the manufacturer). Once the internal timer reaches zero, the alarm is triggered again and the snooze timer resets to its original period. You can usually hit the snooze button indefinitely, but to silence the alarm for good, you need to switch the alarm off.
an alarm bell
An alarm bell is a bell which can be set to alert someone at a pre-set time, or a warning of imminent danger.
It is used in fire alarm and in earthquake alarm.
An alarm-bell is a bell which is rung to signal danger or emergency, or a bell which is rung at a pre-arranged time in order to mark a desired moment for performing an action such as waking up.
tocsin
A fire alarm is usually the constant ringing of a bell or bells
30000Hz
Tocsin
it is used in fire alarm .
How do you make a lunchbox alarm????!! How do you make a lunchbox alarm????!! with a luch box cow u put alarm in pig then the pig belches and the bell rings
How do you make a lunchbox alarm????!! How do you make a lunchbox alarm????!! with a luch box cow u put alarm in pig then the pig belches and the bell rings
Fire alarm sound,anbulance siren sound,alarm bell sound and car theft alarm.