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2. Electromagnetic door holder - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_door_holder

   A simple electromagnetic door holder consists of a strong electromagnet, usually attached to a wall or mounted in a floor pedestal enclosure, next to the door it controls. The mechanism may be mounted near the floor, at the upper corner of the open door, or at any convenient height along the latch edge (away from the hinged edge).

3. Electromagnetic lock - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_lock

   A fail-secure locking device remains locked when power is lost. Fail-safe locking devices are unlocked when de-energized. Direct pull electromagnetic locks are inherently fail-safe. Typically the electromagnet portion of the lock is attached to the door frame and a mating armature plate is attached to the door.

4. Time-delay combination locks - Wikipedia

   en.wikipedia.org/wiki/Time-delay_combination_locks

   This will allow the safe to be opened when the batteries are changed after the pre-set time if the correct code is entered. Some electronic combination locks with a time-delay feature require the code to be entered twice: once to start the timer, and a second to unlock and open the safe entered after the delay period has expired.

5. Magnetic refrigeration - Wikipedia

   en.wikipedia.org/wiki/Magnetic_refrigeration

   The magnetocaloric effect can be quantified with the following equation: = ((,)) ((,)) where is the adiabatic change in temperature of the magnetic system around temperature T, H is the applied external magnetic field, C is the heat capacity of the working magnet (refrigerant) and M is the magnetization of the refrigerant.

6. Refrigerator death - Wikipedia

   en.wikipedia.org/wiki/Refrigerator_death

   At least one state, Oklahoma, enacted legislation making the abandonment of a refrigerator with a latch in a location where a child might find it illegal. [7] At least as early as 1954, alternative methods of securing air-tight closures had been suggested, such as in patent 2767011, filed by Francis P. Buckley et al. in 1954 and issued in 1956 ...

7. Man who posed as good samaritan jailed for rape - AOL

   www.aol.com/man-posed-good-samaritan-jailed...

   A man who raped a vulnerable woman after posing as a good samaritan and luring her to his Aberdeen flat has been jailed for five years. Diego Valdivieso, 30, offered the young woman a bed at his ...

8. Electric bell - Wikipedia

   en.wikipedia.org/wiki/Electric_bell

   It creates a magnetic field that attracts the iron arm of the clapper, pulling it over to give the bell a tap. This opens a pair of electrical contacts (T) attached to the clapper arm, interrupting the current to the electromagnet. The magnetic field of the electromagnet collapses, and the clapper springs away from the bell.

9. 'Once in a lifetime': Video captures mesmerizing 'dolphin ...

   www.aol.com/once-lifetime-video-captures...

   “When they explained the criteria, I said we’re the perfect location,” Gisele Anderson, who operates Capt. Dave’s Dolphin & Whale Watching Safari with her husband, told the Orange County ...