# Half life symbol? - Help.com

## Half life symbol?

hi guys i have been wondering if anyone knew the meaning and symbolism of the half life logo. i always wondered what its significance was and what were its origins?

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Since writing this post fennec may have helped people, but has not within the last 4 days. fennec is a verified member, has been around for 4 years, 11 months and has 18 posts and 48 replies to their name.

### Replies (7)

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a link or a wiki page or at least pdf page

It’s a lambda and it’s used for the decay constant when calculating half-life.

http://en.wikipedia.org/wiki/Lambda

Yay school smarts.

Help me with: Once, it called.

Wrong Wrong Wrong, Its a hand holding a crowbar

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nasi you are wrong that my friend is a greek symbol used in mathematics and science that means the speed of light, im sorry but the name escapes me

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ok its the symbol we use for wavelength

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The real question is, why do people call is “Half-Life two” when it’s clearly supposed to be “Half-Life to the Second power?”

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It’s a Lambda. Other than being the 11th letter in the Greek alphebet, it is the symbol used for wavelength, also for the scientific term “Half-life” which is the period of time it takes for a substance undergoing decay to decrease by half. The game is named Half-life, so its common sense to have a Lambda as its symbol. :)

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