The speaking clock in South Africa is reached by dialling 1026 from fixed or mobile networks and consists of a female voice reading the time in 24-hour format, alternating between Afrikaans and EnglishĪll of South Africa is in the time zone GMT+2 without any daylight saving time so the speaking clock is the same all over the country. In Moscow, the Speaking Clock number is 100 if dialed from within the city, or +7-495-100-xxxx from other countries (where x can be anything)Īt one time in Moscow there were advertisements before and after the announcement of the current time this practice has since ceased. Other operators run their own speaking clocks, with broadly similar formats, or redirect to BT's service. Similarly, announcements for times between the hour and one minute past the hour substitute "o'clock" for the (zero) minutes "At the third stroke, the time will be (hour) (minute) and (second) seconds"įor times that are an exact minute, "precisely" is substituted for the seconds portion of the announcement However this code was only used in the telephone systems of the cities of London, Birmingham, Edinburgh, Glasgow, Liverpool and Manchester The service was obtained by dialling the letters TIM (846) on a dial telephone, and hence the service was often colloquially referred to as "Tim" The voice was that of London telephonist, Ethel Jane Cain, who had won a prize of 10 guineas (£10.50) in a competition to find the right voiceĬain's voice was recorded optically onto the glass disks in a similar way to a film soundtrack The mechanism used was an of array of motors, glass discs, photocells and valves which took up the floorspace of a small room Within the ERC synergy project, we will construct three complementary types of Thorium nuclear clocks and compare them amongst each other (and with conventional atomic clocks) to search for variations in the fundamental forces of nature.A speaking clock service was first introduced in Britain on July 24, 1936 A temporal or spatial variation of these forces could be a signature of the existence of dark matter, probably the universe’s greatest standing mystery. Furthermore, the nuclear clock transition frequency is determined strongly by all fundamental forces acting inside the nucleus and hence can be used to probe these. As the nucleus is a thousand times smaller than the electron shell, it reacts much less to perturbations caused by external fields or forces, so the nuclear clock is expected to be dramatically more robust than the current atomic clocks. In contrast to electron shell levels used in atomic clocks, it uses quantum states within the atomic nucleus of Thorium-229 as a “ticking” reference. ![]() The Thorium nuclear clock project aims to implement a new type of clock – a nuclear clock. These precision clocks have tremendous technological relevance they constitute the backbone of our satellite-based navigation systems as well as our synchronized digital data traffic. ![]() The most precise way of measuring time is by using so-called atomic clocks, which make use of extremely well determined quantum levels in the electron shell of atoms or ions to stabilize the “ticking”. ![]() Time is one of the most basic physical units and probably the one we all have most experience within daily life.
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