The PC version of "Half-Life 2," released in 2004, has an average rating of 96 out of 100 from professional reviewers, and 9.2 out of 10 from users, according to Metacritic. The Xbox version, released in 2005, has an ave... More » Hobbies & Games Video & Online Games

The Strider in the video game series "Half-Life" is a three-legged combine Synth that was introduced in "Half-Life 2." Striders serve as the Combines primary heavy ground assault unit and are capable of hunting down host... More » Hobbies & Games Video & Online Games Adventure Games

The formula for a half-life is T1/2 = ln(2) / λ. In this equation, T1/2 is the half-life. The ln(2) stands for the natural logarithm of two and can be estimated as 0.693, and the λ is the decay constant. More » Science Chemistry Atoms & Molecules
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A demo version of Minecraft is available for free play; however, to play the full game, whether online or via the smartphone app, users must purchase the game. Additional versions of Minecraft available for purchase incl... More » Hobbies & Games Video & Online Games