Academie du Ballet Classique mette a disposizione dei propri associati una collana di libri di danza per bambine. Si tratta di veri e propri balletti di repertorio, narrati in tutti i dettagli, sotto forma di fiaba così da imparare fin da piccole le trame,i costumi,le grandi variazioni dei più noti e affascinanti balletti di danza classica. Un percorso formativo che spinge l’allievo alla lettura ed alla conoscenza di una importantissima parte della cultura ballettistica.


Brands that manufacture chronometer watches
Understanding COSC Accreditation and Its Importance in Watchmaking
COSC Accreditation and its Strict Criteria
Controle Officiel Suisse des Chronometres, or the Controle Officiel Suisse des Chronometres, is the authorized Swiss testing agency that verifies the precision and accuracy of wristwatches. COSC certification is a sign of superior craftsmanship and reliability in chronometry. Not all timepiece brands seek COSC accreditation, such as Hublot, which instead sticks to its proprietary strict standards with mechanisms like the UNICO calibre, reaching equivalent accuracy.
The Science of Precision Timekeeping
The central system of a mechanical timepiece involves the mainspring, which delivers energy as it unwinds. This mechanism, however, can be prone to environmental factors that may impact its precision. COSC-validated movements undergo rigorous testing—over 15 days in various conditions (5 positions, 3 temperatures)—to ensure their durability and dependability. The tests assess:
Typical daily rate accuracy between -4 and +6 secs.
Mean variation, highest variation levels, and impacts of thermal changes.
Why COSC Validation Matters
For timepiece fans and connoisseurs, a COSC-certified timepiece isn't just a piece of tech but a demonstration to lasting quality and precision. It symbolizes a timepiece that:
Offers outstanding reliability and precision.
Provides guarantee of superiority across the complete construction of the timepiece.
Is probable to hold its value more efficiently, making it a sound investment.
Famous Chronometer Brands
Several renowned brands prioritize COSC accreditation for their timepieces, including Rolex, Omega, Breitling, and Longines, among others. Longines, for instance, provides collections like the Archive and Spirit, which feature COSC-validated movements equipped with cutting-edge materials like silicone balance suspensions to boost resilience and efficiency.
Historical Context and the Evolution of Timepieces
The idea of the chronometer originates back to the need for accurate chronometry for navigation at sea, highlighted by John Harrison's work in the eighteenth century. Since the formal foundation of Controle Officiel Suisse des Chronometres in 1973, the certification has become a benchmark for assessing the accuracy of high-end watches, sustaining a tradition of excellence in watchmaking.
Conclusion
Owning a COSC-certified watch is more than an visual selection; it's a dedication to excellence and precision. For those valuing accuracy above all, the COSC accreditation provides peace of mind, ensuring that each accredited timepiece will function dependably under various conditions. Whether for individual contentment or as an investment, COSC-accredited timepieces stand out in the world of watchmaking, bearing on a legacy of meticulous chronometry.