Benda Terbang Aneh

Logo Komunitas BETA-UFO Indonesia.

Benda Terbang Aneh (disingkat BETA; identik dengan makna dari istilah bahasa Inggris: Unidentified Flying Object disingkat UFO) atau sering
kali disebut sebagai benda terbang tak dikenal adalah istilah yang digunakan untuk seluruh fenomena penampakan benda terbang yang tidak bisa diidentikasikan oleh pengamat dan tetap tidak teridentifikasi walaupun telah diselidiki.

Telepon genggam

Sebuah ponsel

Beberapa jenis Telepon genggam

Telepon seluler (ponsel) atau telepon genggam (telgam) atau handphone (HP) atau disebut pula adalah perangkat telekomunikasi
elektronik yang mempunyai kemampuan dasar yang sama dengan telepon konvensional saluran tetap, namun dapat dibawa ke mana-mana (portabel, mobile) dan tidak perlu disambungkan dengan jaringan telepon menggunakan kabel (nirkabel; wireless). Saat ini Indonesia mempunyai dua jaringan telepon nirkabel yaitu sistem GSM (Global System for Mobile Telecommunications) dan sistem CDMA (Code Division Multiple Access). Badan yang mengatur telekomunikasi seluler Indonesia adalah Asosiasi Telekomunikasi Seluler Indonesia (ATSI).

Infantry

Infantry is the branch of an army that fights on foot. Infantrymen are land-based soldiers who are specifically trained for the role of fighting on foot to engage the enemy face-to-face and have historically borne the brunt of the casualties of combat in wars. As the oldest branch of combat arms, they are still the backbone of modern armies. Infantry units have more physically-demanding training than other branches of armies, and place a greater emphasis on discipline, physical strength, fitness and spontaneous sustained aggression. The infantryman himself, with or without his personal weapon, is considered a weapon system.
Infantrymen are easily distinguished from soldiers trained to fight on horseback (cavalry), in tanks, or in technical roles such as armourers or signallers. Rudimentary infantry skills such as basic individual movement techniques, shooting positions and field craft are fundamental to the training of every soldier
. Infantry can access and maneuver in terrain inaccessible to vehicles and tanks, and employ infantry support weapons that can provide firepower in the absence of artillery. Their combat insertion techniques include, airborne, air assault, amphibious and by land.

History of mathematics

A proof from Euclid's Elements, widely considered the most influential textbook of all time.^[1]

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The area of study known as the history of mathematics is primarily an investigation
into the origin of discoveries in mathematics and, to a lesser extent, an investigation into the mathematical methods and notation of the past.
Before the modern age and the worldwide spread of knowledge, written examples of new mathematical developments have come to light only in a few locales. The most ancient mathematical texts available are Plimpton 322 (Babylonian mathematics c. 1900 BC),^[2] the Rhind Mathematical Papyrus (Egyptian mathematics c. 2000-1800 BC)^[3] and the Moscow Mathematical Papyrus (Egyptian mathematics c. 1890 BC). All of these texts concern the so-called Pythagorean theorem, which seems to be the most ancient and widespread mathematical development after basic arithmetic and geometry.
The study of mathematics as a subject in its own right begins in the 6th century BC with the Pythagoreans, who coined the term "mathematics" from the ancient Greek μάθημα (mathema), meaning "subject of instruction".^[4] Greek mathematics greatly refined the methods (especially through the introduction of deductive reasoning and mathematical rigor in proofs) and expanded the subject matter of mathematics.^[5] Chinese mathematics made early contributions, including a place value system.^[6][7] The Hindu-Arabic numeral system and the rules for the use of its operations, in use throughout the world today, likely evolved over the course of the first millennium AD in India and was transmitted to the west via Islamic mathematics.^[8][9] Islamic mathematics, in turn, developed and expanded the mathematics known to these civilizations.^[10] Many Greek and Arabic texts on mathematics were then translated into Latin, which led to further development of mathematics in medieval Europe.
From ancient times through the Middle Ages, bursts of mathematical creativity were often followed by centuries of stagnation. Beginning in Renaissance Italy in the 16th century, new mathematical developments, interacting with new scientific discoveries, were made at an increasing pace that continues through the present day.

Galah Asin

Galah Asin or in other areas or Galasin called Gobak Sodor is a kind of Indonesian regional game. This game is a game group consisting of two groups, where each team consists in 3 - 5 people. The core game is not to block your opponent can escape through the line to the last line of back and forth, and to win all group members should complete the process back and forth in a field area that has been determined.

Alasan Kita Susah Mengingat Masa Bayi

umumnya orang dewasa tidak bisa mengingat masa-masa saat bayi secara keseluruhan. Hanya ada sedikit sekali yang menetap dalam memori otak, terutama pada hal yang punya arti penting - seperti perceraian, berpisah dari orang tua, atau masalah traumatik lainnya.

Chess

Chess is a board game played between two players. It is played on a chessboard, which is a square-checkered board with 64 squares arranged in an eight-by-eight grid. At the start, each player controls sixteen pieces: one king, one queen, two rooks, two knights, two bishops, and eight pawns. The object of the game is to checkmate the opponent's king, whereby the king is under immediate attack (in "check") and there is no way to remove or defend it from attack on the next move.