編輯培力/曾之誾
編輯培力/曾之誾
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諸標章：
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限制者才有標章，不限制者沒有標章。
六種核心授權：1(必須姓名標示)×2(商業、非商業)×3(可改作、不可改作、相同方式分享)
http://science4everyone.net/file/index.php
使用標籤
- 線段：AB
- 根號：√3
- 下標：a1
- 上標：x2
- □ 或 □ </i
- 可以擠開空間的全形空白：　，為全形標點區的第一個字
→ ←
- 適合作斜方向連接線：
╱ ╲
- 三角形：
△三角形 ∆增量 Δ大寫希臘字 ᐃ加拿大拼音符
- 分數：¼ , ½ , ¾ , ⅓ , ⅔ , ⅕ , ⅖ , ⅗ , ⅘ , ⅙ , ⅚ , ⅛ , ⅜ , ⅝ , ⅞
- 羅馬數字：Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ Ⅹ
- 希臘字母：
- Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω
- α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ τ υ φ χ ψ ω
- 幾何圖形：
- ▀ ▁ ▂ ▃ ▄ ▅ ▆ ▇ █ ▉ ▊ ▋ ▌ ▍ ▎ ▏ ▐ ░ ▒ ▓ ▔ ▕ ▖ ▗ ▘ ▙ ▚ ▛ ▜ ▝ ▞ ▟ ■ □ ▢ ▣ ▤ ▥ ▦ ▧ ▨ ▩ ▪ ▫ ▬ ▭ ▮ ▯ ▰ ▱ ▲ △ ▴ ▵ ▶ ▷ ▸ ▹ ► ▻ ▼ ▽ ▾ ▿ ◀ ◁ ◂ ◃ ◄ ◅ ◆ ◇ ◈ ◉ ◊ ○ ◌ ◍ ◎ ● ◐ ◑ ◒ ◓ ◔ ◕ ◖ ◗ ◘ ◙ ◚ ◛ ◜ ◝ ◞ ◟ ◠ ◡ ◢ ◣ ◤ ◥ ◦ ◧ ◨ ◩ ◪ ◫ ◬ ◭ ◮ ◯ ◰ ◱ ◲ ◳ ◴ ◵ ◶ ◷ ◸ ◹ ◺ ◻ ◼ ◽ ◾ ◿
- 數學符號：
- ∀ ∁ ∂ ∃ ∄ ∅ ∆ ∇ ∈ ∉ ∊ ∋ ∌ ∍ ∎ ∏ ∐ ∑ − ∓ ∔ ∕ ∖ ∗ ∘ ∙ √ ∛ ∜ ∝ ∞ ∟ ∠ ∡ ∢ ∣ ∤ ∥ ∦ ∧ ∨ ∩ ∪ ∫ ∬ ∭ ∮ ∯ ∰ ∱ ∲ ∳ ∴ ∵ ∶ ∷ ∸ ∹ ∺ ∻ ∼ ∽ ∾ ∿ ≀ ≁ ≂ ≃ ≄ ≅ ≆ ≇ ≈ ≉ ≊ ≋ ≌ ≍ ≎ ≏ ≐ ≑ ≒ ≓ ≔ ≕ ≖ ≗ ≘ ≙ ≚ ≛ ≜ ≝ ≞ ≟ ≠ ≡ ≢ ≣ ≤ ≥ ≦ ≧ ≨ ≩ ≪ ≫ ≬ ≭ ≮ ≯ ≰ ≱ ≲ ≳ ≴ ≵ ≶ ≷ ≸ ≹ ≺ ≻ ≼ ≽ ≾ ≿ ⊀ ⊁ ⊂ ⊃ ⊄ ⊅ ⊆ ⊇ ⊈ ⊉ ⊊ ⊋ ⊌ ⊍ ⊎ ⊏ ⊐ ⊑ ⊒ ⊓ ⊔ ⊕ ⊖ ⊗ ⊘ ⊙ ⊚ ⊛ ⊜ ⊝ ⊞ ⊟ ⊠ ⊡ ⊢ ⊣ ⊤ ⊥ ⊦ ⊧ ⊨ ⊩ ⊪ ⊫ ⊬ ⊭ ⊮ ⊯ ⊰ ⊱ ⊲ ⊳ ⊴ ⊵ ⊶ ⊷ ⊸ ⊹ ⊺ ⊻ ⊼ ⊽ ⊾ ⊿ ⋀ ⋁ ⋂ ⋃ ⋄ ⋅ ⋆ ⋇ ⋈ ⋉ ⋊ ⋋ ⋌ ⋍ ⋎ ⋏ ⋐ ⋑ ⋒ ⋓ ⋔ ⋕ ⋖ ⋗ ⋘ ⋙ ⋚ ⋛ ⋜ ⋝ ⋞ ⋟ ⋠ ⋡ ⋢ ⋣ ⋤ ⋥ ⋦ ⋧ ⋨ ⋩ ⋪ ⋫ ⋬ ⋭ ⋮ ⋯ ⋰ ⋱ ⋲ ⋳ ⋴ ⋵ ⋶ ⋷ ⋸ ⋹ ⋺ ⋻ ⋼ ⋽ ⋾ ⋿
- 從以上選出較常用者再加上「＋×‧÷±=＝」得常用算符：
- ＋ − × ‧ ÷ ± ∓ = ＝ ≠ ≒ ≡ ≦ ≧ ≅ ∞ ∝ √ ∛ ∜ ∴ ∵ ∈ ∉ ∩ ∪ ⊂ ⊆ ∅ ∫ ∮ ∂ ∆ ∇
- 更理想的代用：
∑(UTF8為數學符號準備的) Σ(Σ)
∘(UTF8為數學符號準備的) °(°)
- 綜合幾何圖形和數學符號得到：∠ △ □ ○ ⊥ ∦ ∥或||(兩根|)或//(兩根/)
- 單位：㎡ ％ ‰ ℃ ℉
- 可用鍵盤 keyin 取代：㏒ ㏑ ％ ℃ ℉
- 箭頭：
- ← ↑ → ↓ ↔ ↕ ↖ ↗ ↘ ↙ ↚ ↛ ↜ ↝ ↞ ↟ ↠ ↡ ↢ ↣ ↤ ↥ ↦ ↧ ↨ ↩ ↪ ↫ ↬ ↭ ↮ ↯ ↰ ↱ ↲ ↳ ↴ ↵ ↶ ↷ ↸ ↹ ↺ ↻ ↼ ↽ ↾ ↿ ⇀ ⇁ ⇂ ⇃ ⇄ ⇅ ⇆ ⇇ ⇈ ⇉ ⇊ ⇋ ⇌ ⇍ ⇎ ⇏ ⇐ ⇑ ⇒ ⇓ ⇔ ⇕ ⇖ ⇗ ⇘ ⇙ ⇚ ⇛ ⇜ ⇝ ⇞ ⇟ ⇠ ⇡ ⇢ ⇣ ⇤ ⇥ ⇦ ⇧ ⇨ ⇩ ⇪ ⇫ ⇬ ⇭ ⇮ ⇯ ⇰ ⇱ ⇲ ⇳ ⇴ ⇵ ⇶ ⇷ ⇸ ⇹ ⇺ ⇻ ⇼ ⇽ ⇾ ⇿
- 圖示：
- ☀ ☁ ☂ ☃ ☄ ★ ☆ ☇ ☈ ☉ ☊ ☋ ☌ ☍ ☎ ☏ ☐ ☑ ☒ ☓ ☔ ☕ ☖ ☗ ☘ ☙ ☚ ☛ ☜ ☝ ☞ ☟ ☠ ☡ ☢ ☣ ☤ ☥ ☦ ☧ ☨ ☩ ☪ ☫ ☬ ☭ ☮ ☯ ☰ ☱ ☲ ☳ ☴ ☵ ☶ ☷ ☸ ☹ ☺ ☻ ☼ ☽ ☾ ☿ ♀ ♁ ♂ ♃ ♄ ♅ ♆ ♇ ♈ ♉ ♊ ♋ ♌ ♍ ♎ ♏ ♐ ♑ ♒ ♓ ♔ ♕ ♖ ♗ ♘ ♙ ♚ ♛ ♜ ♝ ♞ ♟ ♠ ♡ ♢ ♣ ♤ ♥ ♦ ♧ ♨ ♩ ♪ ♫ ♬ ♭ ♮ ♯ ♰ ♱ ♲ ♳ ♴ ♵ ♶ ♷ ♸ ♹ ♺ ♻ ♼ ♽ ♾ ♿ ⚀ ⚁ ⚂ ⚃ ⚄ ⚅ ⚆ ⚇ ⚈ ⚉ ⚊ ⚋ ⚌ ⚍ ⚎ ⚏ ⚐ ⚑ ⚒ ⚓ ⚔ ⚕ ⚖ ⚗ ⚘ ⚙ ⚚ ⚛ ⚜ ⚝ ⚞ ⚟ ⚠ ⚡ ⚢ ⚣ ⚤ ⚥ ⚦ ⚧ ⚨ ⚩ ⚪ ⚫ ⚬ ⚭ ⚮ ⚯ ⚰ ⚱ ⚲ ⚳ ⚴ ⚵ ⚶ ⚷ ⚸ ⚹ ⚺ ⚻ ⚼ ⚽ ⚾ ⚿ ⛀ ⛁ ⛂ ⛃ ⛄ ⛅ ⛆ ⛇ ⛈ ⛉ ⛊ ⛋ ⛌ ⛍ ⛎ ⛏ ⛐ ⛑ ⛒ ⛓ ⛔ ⛕ ⛖ ⛗ ⛘ ⛙ ⛚ ⛛ ⛜ ⛝ ⛞ ⛟ ⛠ ⛡ ⛢ ⛣ ⛤ ⛥ ⛦ ⛧ ⛨ ⛩ ⛪ ⛫ ⛬ ⛭ ⛮ ⛯ ⛰ ⛱ ⛲ ⛳ ⛴ ⛵ ⛶ ⛷ ⛸ ⛹ ⛺ ⛻ ⛼ ⛽ ⛾ ⛿
From today's featured article
"Sinestro Corps War" is an American comic book crossover event published by DC Comics in its Green Lantern and Green Lantern Corps titles. Written by Geoff Johns (pictured) and Dave Gibbons, and drawn by Ivan Reis, Patrick Gleason, and Ethan Van Sciver, the 11-part saga was published between June and December 2007 with a main storyline, four supplemental "Tales of the Sinestro Corps" one-shot specials and a Blue Beetle tie-in issue concurrently released. The story centers on the Green Lantern Corps' interstellar war against the Sinestro Corps, led by Sinestro, who seek a universe ruled through fear. The 1986 "Tales of the Green Lantern Corps" story was the thematic basis of the storyline. Critical and fan reception to "Sinestro Corps War" was positive. Many reviewers ranked it among the top comic books of the year and the storyline's first issue garnered a 2008 Eisner Award nomination. The storyline was a financial success and several issues underwent multiple printings. (Full article...)
Did you know ...
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- ... that Lea Hinz (pictured) gave up medical school to perform on the aerial hoop?
- ... that hundreds of residents of Chanhassen, Minnesota, opposed the construction of the Temple of ECK?
- ... that South Australian politician Carlos Quaremba said of his childhood, "I was the only wog in the whole school"?
- ... that, after a Bronx bank building's clock broke, people fired bullets towards it at night?
- ... that Prime Minister Anerood Jugnauth said municipal residents should be banned from voting if they refused to vote in the 2015 Mauritian municipal elections?
- ... that American football player Gil Mains flew feetfirst into opponents?
- ... that tunnels created by giant root-rats can reach up to 34 m (112 ft) in length?
- ... that some children from North Dakota crossed the Canadian border daily to attend school in Mowbray, Manitoba, in the early 1900s?
- ... that doctors removed six knives from John Fasel's stomach?
In the news
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- Separate school shootings in Siverek and in Onikişubat, Turkey, leave 12 people dead and 35 others injured.
- Romuald Wadagni (pictured) wins the Beninese presidential election.
- In golf, Rory McIlroy wins the Masters Tournament.
- The Tisza Party, led by Péter Magyar, wins the Hungarian parliamentary election, ending sixteen years of rule by Viktor Orbán's Fidesz.
On this day
April 21: Natale di Roma in Italy (AD 47); first day of Ridván (Baháʼí Faith, 2026)
- 753 BC – According to the calculations of the ancient Roman scholar Varro Reatinus, Romulus and Remus legendarily founded the city of Rome.
- 1526 – Ibrahim Khan Lodi, the last ruler of the Lodi dynasty, was defeated and killed by Babur at the First Battle of Panipat, marking the beginning of Mughal rule in India.
- 1836 – Forces of the Republic of Texas led by Sam Houston defeated the Mexican troops of Antonio López de Santa Anna in the Battle of San Jacinto, the decisive and final battle of the Texas Revolution.
- 1925 or 1926 – The al-Baqi Cemetery in Medina, the site of the mausoleum (pictured) of four of the Twelve Imams of Shia Islam, was demolished by Wahhabis.
- 2021 – The Indonesian Navy submarine Nanggala imploded and sank in the Bali Sea, resulting in the deaths of all 53 people on board.
- Bardas (d. 866)
- Charlotte Brontë (b. 1816)
- Dorothy Eady (d. 1981)
- Xavi Simons (b. 2003)
Today's featured picture
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Elizabeth II (21 April 1926 – 8 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until her death. The first child of the Duke and Duchess of York (later King George VI and Queen Elizabeth), she became heir presumptive when the duke became king in 1936 upon the abdication of Edward VIII. During the Second World War, she served in the Auxiliary Territorial Service. She married Philip Mountbatten in 1947; they were wed for 73 years until his death in 2021. She became queen on her father's death in 1952, and reigned for seven decades through dramatic changes in her realms, attaining the oldest age of any British monarch (96), and having the longest reign. She faced media criticism of her family over the breakups of her children's marriages, and after the death of Diana, Princess of Wales, in 1997. However, support for the monarchy in Britain remained high, as did her popularity. Elizabeth died at Balmoral Castle and was succeeded by her eldest son, Charles III. This 1933 oil-on-canvas painting of Elizabeth (then Princess Elizabeth of York) aged seven was created by Anglo-Hungarian artist Philip de László. It is now in the Royal Collection. Painting credit: Philip de László
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