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Photo by PhOtOnQuAnTiQuE
Lightning is an amazing and breathtaking sight to witness. At the same time it is one of the most dangerous and unpredictable of all natural phenomena. But how much do you really know about lightning? Even though scientists all over the world are gathering facts about lightning, dividing it into different types, measuring its voltage, monitoring temperature, and creating it in laboratories, it is still impossible to predict the behavior of every lightning bolt. Let’s look through some facts about lightning.
منبع:ایمیل
And how beautiful these three important thingsMark Twain | |
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![]() Mark Twain, photo by A. F. Bradley New York, 1907 | |
Born | Samuel Langhorne Clemens November 30, 1835(1835-11-30) Florida, Missouri, U.S. |
Died | April 21, 1910(1910-04-21) (aged 74) Redding, Connecticut, U.S. |
Pen name | Mark Twain |
Occupation | Writer, lecturer |
Nationality | American |
Genres | Fiction, historical fiction, children's literature, non-fiction, travel literature, satire, essay, philosophical literature, social commentary, literary criticism |
Notable work(s) | Adventures of Huckleberry Finn, The Adventures of Tom Sawyer |
Spouse(s) | Olivia Langdon Clemens (m. 1870–1904) «start: (1870)–end+1: (1905)»"Marriage: Olivia Langdon Clemens to Mark Twain" Location: (linkback:http://en.wikipedia.org/wiki/Mark_Twain) |
Children | Langdon, Susy, Clara, Jean |
Three things in life that may never be lost
سه چیز در زندگی که هرگز نباید از بین بروند
Peace
آرامش
Hope
امید
Honesty
صداقت
منبع:اینترنت
Jewellery or jewelry: is a form of personal adornment, manifesting itself as necklaces, rings, brooches, earrings, and bracelets. Jewellery may be made from any material, usually gemstones, precious metals, or shells. Factors affecting the choice of materials include cultural differences and the availability of the materials. Jewellery may be appreciated because of its material properties, its patterns, or for meaningful symbols. Jewellery differs from other items of personal adornment in that it has no other purpose than to look appealing. Items such as belts and handbags are considered to be accessories rather than jewellery.
Diamonds
Diamonds were first mined in India. Pliny may have mentioned them, although there is some debate as to the exact nature of the stone he referred to as Adamas;In 2005, Australia, Botswana, Russia and Canada ranked among the primary sources of gemstone diamond production.
The British crown jewels contain the Cullinan Diamond, part of the largest gem-quality rough diamond ever found (1905), at 3,106.75 carats (621.35 g).
Now popular in engagement rings, this usage dates back to the marriage of Maximilian I to Mary of Burgundy in 1477.
Other gemstones
Many precious and semiprecious stones are used for jewellery. Among them are: