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Taraxacum officinale, the dandelion or common dandelion, [6] is a herbaceous perennial flowering plant in the daisy family, Asteraceae. The common dandelion is well known for its yellow flower heads that turn into round balls of many silver-tufted fruits that disperse in the wind. These balls are called "clocks" in both British and American ...
The pappus-clad fruits that make up the familiar "dandelion clock" being dispersed by the wind (family Asteraceae) Bidens frondosa achenes with barbed pappusIn Asteraceae, the pappus is the modified calyx, [1] the part of an individual floret, that surrounds the base of the corolla tube in flower.
Local mean time (LMT) is a form of solar time that corrects the variations of local apparent time, forming a uniform time scale at a specific longitude. This measurement of time was used for everyday use during the 19th century before time zones were introduced beginning in the late 19th century; it still has some uses in astronomy and navigation.
Dandelion bilobed stigma bearing pollen. Taraxacum (/ t ə ˈ r æ k s ə k ə m /) [3] is a large genus of flowering plants in the family Asteraceae, which consists of species commonly known as dandelions.
People often use the simple mnemonic spring forward, fall back to remember to set clocks forward one hour (e.g., from 2 a.m. to 3 a.m.) in the spring and backward one hour (e.g., from 2 a.m. to 1 ...
Chronometry is derived from two root words, chronos and metron (χρόνος and μέτρον in Ancient Greek respectively), with rough meanings of "time" and "measure". [6] The combination of the two is taken to mean time measuring. In the Ancient Greek lexicon, meanings and translations differ depending on the source.
A world clock is a clock which displays the time for various cities around the world. The display can take various forms: The display can take various forms: The clock face can incorporate multiple round analogue clocks with moving hands or multiple digital clocks with numeric readouts, with each clock being labelled with the name of a major ...
This corresponds with the sign of the equation of time, which is positive in the westward direction. The further west the Sun is, compared with its mean position, the more "fast" a sundial is, compared with a clock. (See Equation of time#Sign of the equation of time.) If the analemma is a graph with positive declination (north) plotted upward ...