Tuesday, October 30, 2012

Hermle Tellurium II
Astronomical Clocks and Devices

Expressions of Time offers a selection of astronomical clocks.  Our selection of  Hermle Tellurium and Astrolabium clocks reproduce the annual orbit of the earth around the sun, with the earth rotating around its own axis once in twenty four hours.  The moon, in turn, revolves around the earth in 29.5 days completing a full rotation around its axis.  This allows the reproduction of the different moon phases as they are visible from earth.  In the course of one year, the earth passes all twelve zodiac signs, months and individual days which are indicated on the flat disc.  Each clock is made in Germany.

Our most recent addition is the Ferguson’s Orrery Astronomical Device.  This astronomical device was commissioned by Sternreiter and made entirely in the U.S.A. by American craftsmen.

Fergusons Orrery Astronomical Device

This orrery is unusual because it illustrates the movement of the nodes and apogee of the Moon’s orbit, instead of the Moon’s position. The Moon’s orbit is elliptical, with an eccentricity of about 5.49%. The difference in the perceived size of the Moon between the perigee (the closest approach to the Earth) and apogee (the farthest point from the Earth) is about 12%. People noticed the difference over the years because the Moon is about 30% brighter when closer to the Earth. The precession of the apogee around the Earth is just less than nine years. The pointer fixed to the large bottom plate represents the position of the apogee of the Moon’s orbit.



The Moon’s orbit is inclined 5.14° from the plane of the ecliptic (the plane of the Earth’s orbit around the Sun). The points where the Moon’s orbit intersects the ecliptic are called the nodes. The conditions for an eclipse require that a node intersect the line of light from the Sun to the Earth and that the Moon be present at the node at the same time. These nodes recess around the Earth with a period of about 18-1/2 years. The sloped ring on the orrery represents the Moon’s orbit.

The Earth’s axis is inclined 23.5° with respect to the ecliptic and remains fixed in that orientation with respect to the zodiac. The orrery illustrates this with a zodiac inscribed on the ring representing the plane of the ecliptic. The day/night indicator mounted to the frame facilitates conversations about the different lengths of days and nights throughout the year. The calendar ring on the base illustrates both the conventional 365-day calendar and the western zodiac with 360 divisions. Ferguson’s 1764 engraving shows the effect of Britain’s adoption of the Gregorian calendar in 1752.

Check out all the Tellurium and Astronomical clocks and devices offered by Expressions of Time at http://www.clockshoppes.com/tellurium-and-astrolabium.aspx.

 

Sunday, October 28, 2012

Hermle Brooke Mechanical Regulator Wall Clock -
Cherry and Mahogany Finish
Hermle North America is now including a 3 year manufacturers warranty on all Hermle clocks.  This by far exceeds the 6 month to 2 year warranty of any other clock manufacturer.  Hermle offers a wide variety of timepieces that are made in Germany.  They also offer a line of grandfather clocks that are made in America  and are now moving toward producing many solid wood cases in the United States.  We consider Hermle one of the best clocks you can purchase.  They offer quality, timeless timepieces at great prices.

 
Expressions of Time is an official sponsor of the Legacy Project Listen to a Life Essay Contest.  Participants interview an older adult about their life experiences and then submit a 300-word essay.  All winning essays become part of the Legacy Project's online Legacy Library, recording life wisdom that can make the world and our future a little bit better.  For more information go to http://www.legacyproject.org/contests/ltal.html
 
 

 

Tuesday, November 29, 2011

Musical Clocks

Seiko Musical Wall Clock
On the hour the clock plays one of six hi-fi melodies:

    Symphony No. 9 "Ode to Joy"
    Die Meistersinger Von Nurnberg Prelude
    Greensleeves
    An Der Schonen Blauen Donau
    J. Brahms "Waltz No. 15 Op. 39-15
    Dance of the Hours   






    Monday, November 28, 2011

    German Anniversary Clocks

    German Quartz Anniversary Clocks
    with Decorative Garden Scene

    German Anniversary Clock




    Made in Germany
    Glass dome
    Decorative garden scene dial with Roman numerals
    Metal hands
    Brasstone pendulum, pillars, crown, and bezel
    Diamond-cut bi-color metal dial
    Crystal-cut pendulum
    Solid shaft pendulum drive
    9" Tall


    Movement Features:

    German quartz (battery) movement
    Time only (no chimes)

    Sunday, November 20, 2011

    Genuine Black Forest Cuckoo Clocks

    
    Sternreiter Cuckoo Clock
     with One-Day Movement

    Create a Life-long Memory with an Authentic German Cuckoo Clock

    Do you have a memory of grandparents, aunts or uncles that had a cuckoo clock when you were a child? There is nothing more fascinating than the sight and sound of a musical cuckoo clock with animated animals and/or dancers.

    Expressions of Time is proud to offer genuine Black Forest cuckoo clocks from Rombach und Haas; Sternreiter; Hubert Herr and Hekas. Each of these clockmakers brings years of experience to the design and manufacture of beautifully crafted timepieces.
    Style
    Chalet Cuckoo Clock
    In addition to the traditional hand carved cuckoo clock; many of which feature animals and leaves, we offer a number of contemporary designs. You'd never know these contemporary clocks were cuckoo clocks until the top of the hour when a cuckoo bird appears and begins to cuckoo the hour.
    Chalet style cases are also very popular. These clocks often include animated characters such as a man drinking beer, a wood chopper, moving waterwheel or moving animals, to name a few possibilities.

    Movement
    Cuckoo clocks are typically available with either a quartz movement, 1-day or 8-day movement. A quartz cuckoo clock is ideal for the busy individual who doesn't have the time to wind a clock on a daily or weekly basis.
    
    Sternreiter Cuckoo
    Clock with 8-Day Movement
    Other cuckoo clocks are wound by a mechanical movement. Weights, often in the shape of pine cones or acorns operate the mechanical movement by pulling up the weights. Most cuckoo clocks are designed with either an 8-day or 1-day mechanical movement. 8-day cuckoo clocks must be wound once a week, 1-day cuckoo clocks provide between 24 and 30 hours of operating time before the weights must be pulled again.

    Musical cuckoo clocks are available in all styles and movement choice. These clocks play a variety of tunes at the top of the hour. They generally cycle through either six or twelve different songs. Afraid the music will cause sleepless nights? Most clocks include a night-time shutoff and volume control.

    Warranty
    All quartz cuckoo clocks include a one year manufacturer's warranty. Mechanical cuckoo clocks include a two year warranty.