Titre: The Equation of Time - AEquatio Dierum: A Journal, a Reference & a Picture Book
�diteur: Lulu.com
Date de parution: 2024
Langue: anglais
ISBN � 10 chiffres: 1445745410
ISBN � 13 chiffres: 9781445745411
Reliure: Couverture souple
�tat de l'article: New

A propos de ce titre

Synopsis

The Equation-of-Time denotes the variance between Mean Time as told by the Stars and Solar Time as told by the Sun. It was initially identified by Ptolemy around 200 CE. During the Early Middle Ages, astronomers utilized this Equation to assist in lunar observations. Throughout the High & Late Middle Ages, sundials held prominence as the primary means of timekeeping, indicating Solar Time. However, in the 17th century CE, the emergence of precise pendulum clocks and watches prompted a gradual shift towards the adoption of Mean Time over Solar Time. In particular, the use of Solar Time corrected by the Equation-of-Time to determine local mean time, was used in the determination of longitude at sea. Prior to the availability of time signals, sundials - together with tables detailing the Equation - were used to set clocks.

� propos de l?auteur

The author has lectured internationally on the Equation of Time, the history of time keeping and sundials www.equation-of-time.info

Les informations fournies dans la section � A propos du livre � peuvent faire r�f�rence � une autre �dition de ce titre.

Description de la librairie

Hello! Ria Christie Collections is an online venture that was initially set up in 2012 to sell books. We do not have a physical high street store. We are professional online booksellers. We only sell brand new books in perfect condition that we source from various suppliers and the publishers. Primarily, our aim is to provide an excellent service to all our customers. We always work as a team to achieve this. Our other objectives are to: 1. Ensure that all our products reach their destination quickly in a safe and secure manner 2. Answer to all our customer queries within 24 hours 3. Ensure that our customers are happy with their purchases 4. Provide all the items at a competitive price 5. Always listen to our customers Ria Christie Collections is not a registered company. It is a Sole Trader venture. Other key information is shown below: Contact Person Name: Rakesh Luchmun (Mr) Storefront Name: Ria Christie Collections Place of Establishment Address: Suite B; ARUN House; ARUN Building Arundel Road Uxbridge UB8 2RR United Kingdom E-Mail Address: riachristie@hotmail.co.uk VAT Number: GB 160 5650 25 We always work hard and aim to comply with all of Abebooks Policies. If you have any issues, please do not hesitate to write to us whether before or after a purchase. We promise to reply to you promptly and, in any case, within 24 hours. Thank you kindly! Yours sincerely Mr Rakesh Luchmun (Founder) and the Ria Christie Collections Team

Visitez la page d�accueil du vendeur

Informations commerciales relatives au vendeur

Ryefield Investments Limited
175 Pield Heath Road, Uxbridge, UB8 3NL, United Kingdom

Conditions de vente et de livraison

Conditions g�n�rales de vente

All Returns and Refund are as per Abebooks policies.

Conditions d'exp�dition

Orders usually ship within 2 business days. If your book order is heavy or oversized, we may contact you to let you know extra shipping is required. Thank you!