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772. Zinnia |
773. Zither |
774. Zebu |
775. Zorro |
776. Zero |
777. Zebra |
Related products |
Julia MacRae Books published an Animalia colouring book in 2008. H. N. Abrams also published a wall calendar colouring book version for children the same year. |
H. N. Abrams published The Animalia Wall Frieze, a fold-out over 26 feet in length, in which the author created new riddles for each letter. |
The Great American Puzzle Factory created a 300-piece jigsaw puzzle based on the book's cover. |
Adaptations |
A television series was also created, based on the book, which airs in the United States, Australia, Canada, the United Kingdom, Norway and Venezuela. It also airs on Minimax for the Czech Republic and Slovakia. And recently in Greece on the channel ET1. The Australian Children's Television Foundation released a teachi... |
In 2010, The Base Factory and AppBooks released Animalia as an application for iPad and iPhone/iPod Touch. |
Awards |
Animalia won the Young Australian's Best Book Award in 1987 for Best Picture Story Book. |
The Children's Book Council of Australia designated Animalia a 1987 Picture Book of the Year: Honour Book. |
Kid's Own Australian Literature Awards named Animalia the 1988 Picture Book Winner. |
References |
External links |
Graeme Base's official website |
A Learning Time activity guide for Animalia created by The Little Big Book Club |
Alphabet books |
1986 children's books |
Picture books by Graeme Base |
Puzzle books |
Australian children's books |
Puffin Books books International Atomic Time (TAI, from the French name ) is a high-precision atomic coordinate time standard based on the notional passage of proper time on Earth's geoid. It is a continuous scale of time, without leap seconds. It is the principal realisation of Terrestrial Time (with a fixed offset of... |
TAI may be reported using traditional means of specifying days, carried over from non-uniform time standards based on the rotation of the Earth. Specifically, both Julian days and the Gregorian calendar are used. TAI in this form was synchronised with Universal Time at the beginning of 1958, and the two have drifted ap... |
Operation |
TAI is a weighted average of the time kept by over 400 atomic clocks in over 50 national laboratories worldwide. The majority of the clocks involved are caesium clocks; the International System of Units (SI) definition of the second is based on caesium. The clocks are compared using GPS signals and two-way satellite ti... |
The participating institutions each broadcast, in real time, a frequency signal with timecodes, which is their estimate of TAI. Time codes are usually published in the form of UTC, which differs from TAI by a well-known integer number of seconds. These time scales are denoted in the form UTC(NPL) in the UTC form, whe... |
The clocks at different institutions are regularly compared against each other. The International Bureau of Weights and Measures (BIPM, France), combines these measurements to retrospectively calculate the weighted average that forms the most stable time scale possible. This combined time scale is published monthly i... |
Errors in publication may be corrected by issuing a revision of the faulty Circular T or by errata in a subsequent Circular T. Aside from this, once published in Circular T, the TAI scale is not revised. In hindsight, it is possible to discover errors in TAI and to make better estimates of the true proper time scale.... |
History |
Early atomic time scales consisted of quartz clocks with frequencies calibrated by a single atomic clock; the atomic clocks were not operated continuously. Atomic timekeeping services started experimentally in 1955, using the first caesium atomic clock at the National Physical Laboratory, UK (NPL). It was used as a bas... |
The International Time Bureau (BIH) began a time scale, Tm or AM, in July 1955, using both local caesium clocks and comparisons to distant clocks using the phase of VLF radio signals. The BIH scale, A.1, and NBS-A were defined by an epoch at the beginning of 1958 The procedures used by the BIH evolved, and the name for... |
The SI second was defined in terms of the caesium atom in 1967. From 1971 to 1975 the General Conference on Weights and Measures and the International Committee for Weights and Measures made a series of decisions which designated the BIPM time scale International Atomic Time (TAI). |
In the 1970s, it became clear that the clocks participating in TAI were ticking at different rates due to gravitational time dilation, and the combined TAI scale, therefore, corresponded to an average of the altitudes of the various clocks. Starting from the Julian Date 2443144.5 (1 January 1977 00:00:00), corrections ... |
The instant that the gravitational correction started to be applied serves as the epoch for Barycentric Coordinate Time (TCB), Geocentric Coordinate Time (TCG), and Terrestrial Time (TT), which represent three fundamental time scales in the solar system. All three of these time scales were defined to read JD 2443144.5... |
The continued existence of TAI was questioned in a 2007 letter from the BIPM to the ITU-R which stated, "In the case of a redefinition of UTC without leap seconds, the CCTF would consider discussing the possibility of suppressing TAI, as it would remain parallel to the continuous UTC." |
Relation to UTC |
UTC is a discontinuous time scale. It is occasionally adjusted by leap seconds. Between these adjustments, it is composed of segments that are mapped to atomic time. From its beginning in 1961 through December 1971, the adjustments were made regularly in fractional leap seconds so that UTC approximated UT2. Afterward,... |
See also |
Clock synchronization |
Network Time Protocol |
Precision Time Protocol |
Time and frequency transfer |
Notes |
References |
Footnotes |
Bibliography |
External links |
Bureau International des Poids et Mesures: TAI |
Time and Frequency Section - National Physical Laboratory, UK |
IERS website |
NIST Web Clock FAQs |
History of time scales |
NIST-F1 Cesium Fountain Atomic Clock |
Japan Standard Time Project, NICT, Japan |
Standard of time definition: UTC, GPS, LORAN and TAI |
Time scales Altruism is the principle and moral practice of concern for happiness of other human beings or other animals, resulting in a quality of life both material and spiritual. It is a traditional virtue in many cultures and a core aspect of various religious and secular worldviews. However, the object(s) of conce... |
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