[DOC] [TLE] How do pendulum clocks work? - Explain that Stuff [PAR] Jan 24, 2016 ... ... made a tick-tock noise because it was completely mechanical rather ... A 
pendulum is a rod hanging vertically from its top end (or a weight .... In summary, 
then, the key parts of a pendulum clock are: A dial and hands that indicate the 
time. A weight that stores (potential) energy and releases it to the clock... [DOC] [TLE] How does a pendulum in a mechanical clock works? Not having ... [PAR] Not having electricity, from where does it take its energy? ... the weights slowly 
lower and transfer their potential energy to the pendulum, keeping it swinging. [DOC] [TLE] Collectible Clocks | eBay [PAR] Howard Miller Grandfather Clock or Curio Cabinet Door Key (901G) ..... 
Traditional cuckoo clocks feature a swinging pendulum and a mechanical bird 
that emerges ... A weight stores the potential energy and releases it to the clock 
as it drops. [DOC] [TLE] How a mechanical alarm clock works - CSE - IIT Kanpur [PAR] Part of the escapement of a mechanical clock. ... The barrel contains the wound-
up mainspring, hooked to it at its outer end which stores the energy, assuring a 
power reserve of 36 to 45 hours to the ... Key to wind up and set the watch to time. 
... The "Potential Energy" of the spring provides the driving force to run the clock . [DOC] [TLE] Energy storage - Wikipedia [PAR] Energy storage is the capture of energy produced at one time for use at a later 
time. A device that stores energy is sometimes called an accumulator. ... A wind-
up clock stores potential energy (in this case mechanical, in the ..... It is known as 
a 'secondary cell' because its electrochemical reactions are electrically reversible
. [DOC] [TLE] Escapement - Wikipedia [PAR] An escapement is a device in mechanical watches and clocks that transfers 
energy to the timekeeping element (the "impulse action") and allows the number 
of its oscillations to be counted (the "locking action"). The impulse action transfers 
energy to the clock's timekeeping element ... Remarkably, Philo's comment that "
its construction is similar to that of clocks"... [DOC] [TLE] How Does A Pendulum Clock Work?  Science ABC [PAR] Aug 30, 2016 ... ... very slowly) and its potential energy is what powers the gears that in turn ... 
pendulum clocks consist only of mechanical parts that function in ... For instance, 
a clock with a heavier weight can store more potential energy, and ... Chroma 
Key: Why Are Green or Blue Screens Used While Shooting Movies? [DOC] [TLE] Small springs could provide big power | MIT News [PAR] Sep 21, 2009 ... That's the kind of potential that carbon nanotube springs could hold, according to 
Carol ... by the difference between the spring in a mousetrap or in a windup clock. 
... Any system that requires conversion from mechanical energy to ... going uphill 
might be more efficient if it stores and releases its energy from... [DOC] [TLE] Why a $10 Casio Keeps Better Time Than a $10,000 Rolex - Gizmodo [PAR] Feb 12, 2013 ... The energy stores in a mainspring keep a watch ticking, but they're not ... See, 
mechanical clocks rely on an oscillatorthe watch's inner ... system's frequency, 
which is how the clock maintains accurate time. ... Winding a clock, either with the 
watch crown or a key, adds to the mainspring's potential energy. [DOC] [TLE] Windup technology (energy forum at permies) - Permies.com [PAR] It would require a source of cold to deactivate the spring so it can be easily 
wound. .... Still, it's an intriguing idea to store mechanical energy for on-demand 
use at a later time. ... The kind in windup toys that use an inserted "key" to wind 
up. .... the potential mechanical energy that can be store by wind-up "clock type" 
springs. [DOC] [TLE] Modeling and Analysis of an Atmospheric Driven Atmos Clock with ... [PAR] atmospheric differences to power the mechanical bellows and wind the 
mainspring.

Question: A mechanical clock that requires a key stores its potential energy in this
Answer: Spring