Light Bulb full of Water ????

I was cleaning up around an old building on my propery. There is a lot of debris scatterred around from the previous owner.
Anyhow, I found am old (incandescant) lightbulb outside, and it's half full of water. There is no crack in the glass. The threaded base was partly pointing upward, so I assume the water entered thru the base, but I know that even inside the base, the bulb's glass is supposed to be air tight. I'm just curious how the water got inside?
And most amazing, is how the glass did not crack during the winter, when the water froze....
Too bad the filament is gone, or I'd be tempted to apply power to it, just to see what would happen!
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On 5/10/2015 4:02 PM, snipped-for-privacy@spamblocked.com wrote:

Maybe the bulb was from Canada and run on hydro power?
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On Sun, 10 May 2015 15:02:50 -0500, snipped-for-privacy@spamblocked.com wrote:

Water cooled light bulbs are more efficient and will run in more adverse conditions. They can also be higher wattarger. One the size of a 100 watt lightbulb can safely carry 1000 watts, with commensurate illumination.

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On 5/10/15 4:02 PM, snipped-for-privacy@spamblocked.com wrote:

shop and needed a drink, and your flask was empty? That happened to me a lot. I'd just turn on the lights. The bulb that didn't go on would be the one with my emergency hundred-proof. Don't worry, it won't freeze unless it goes below -40.
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