Diffie–Hellman key exchange is a method of securely exchanging cryptographic keys over a public channel and was one of the first public-key protocols as conceived by Ralph Merkle and named after Whitfield Diffie and Martin Hellman. DH is one of the earliest practical examples of public key exchange implemented within the field of cryptography.Published in 1976 by Diffie and …

The Years of Lead (Italian: Anni di piombo) is a term used for a period of social and political turmoil in Italy that lasted from the late 1960s until the late 1980s, marked by a wave of both far-left and far-right incidents of political terrorism.. The Years of Lead are often considered to have begun with the 1968 movement in Italy and the Hot Autumn strikes starting in 1969; the death …

A smiley, sometimes referred to as a smiley face, is a basic ideogram that represents a smiling face.Since the 1950s it has become part of popular culture worldwide, used either as a standalone ideogram, or as a form of communication, such as emoticons.The smiley began as two dots and a line to represent eyes and a mouth. More elaborate designs in the 1950s emerged, with …

The history of erotic depictions includes paintings, sculpture, photographs, dramatic arts, music and writings that show scenes of a sexual nature throughout time. They have been created by nearly every civilization, ancient and modern. Early cultures often associated the sexual act with supernatural forces and thus their religion is intertwined with such depictions.

Recreation is an essential part of human life and finds many different forms which are shaped naturally by individual interests but also by the surrounding social construction. Recreational activities can be communal or solitary, active or passive, outdoors or indoors, healthy or harmful, and useful for society or detrimental.

The 1st century BC, also known as the last century BC and the last century BCE, started on the first day of 100 BC and ended on the last day of 1 BC.The AD/BC notation does not use a year zero; however, astronomical year numbering does use a zero, as well as a minus sign, so "2 BC" is equal to "year –1". 1st century AD (Anno Domini) follows.. In the course of the century, all the …

Various uses of the term "Olympic" to describe athletic events in the modern era have been documented since the 17th century. The first such event was the Cotswold Games or "Cotswold Olimpick Games", an annual meeting near Chipping Campden, England, involving various sports.It was first organised by the lawyer Robert Dover between 1612 and 1642, with several …

The 2nd millennium BC spanned the years 2000 BC to 1001 BC. In the Ancient Near East, it marks the transition from the Middle to the Late Bronze Age.The Ancient Near Eastern cultures are well within the historical era: The first half of the millennium is dominated by the Middle Kingdom of Egypt and Babylonia.The alphabet develops. At the center of the millennium, a …

ビリー・バンバン heritage from '70s コンプリート・ベスト: CD PSCR-5293 アイネットワーク 2000年 10月21日: ベスト撰集: CD EWCC-86011 ハイブライト 2003年 4月2日: ビリーバンバン ツイン・ベスト: CD HTCC-2003/4 ユニバーサルミュージック; 2004年 10月13日

Panspermia (from Ancient Greek πᾶν (pan) 'all ', and σπέρμα (sperma) 'seed') is the hypothesis, first proposed in the 5th century BCE by the Greek philosopher Anaxagoras, that life exists throughout the Universe, distributed by space dust, meteoroids, asteroids, comets, and planetoids, as well as by spacecraft carrying unintended contamination by microorganisms.