Is Absolute Zero Absolute?

Right now, as I type this sentence, Earth"s Northern Hemisphere is tilted away from the bright ball of light that is the Sun, and it’s cold here (relatively speaking). Humans have long recorded and measured the temperature of their environment, and for good reason. Keeping constant watch on a thermometer helps us prepare for the potential dangers of cold weather. Take zero degrees Celsius, for instance. At such temperatures, water begins to freeze. In some cases, the pipes that the water runs through malfunction, and then there"s the various life-or-death afflictions that can be brought on by this cold temperature. However, zero degrees Celsius is pretty warm compared to zero degrees on the Fahrenheit scale (after all, water freezes at 32 F).

Yet, neither of these can compare to the temperature known as absolute zero.

Learn about the coldest of the cold, and how scientists surpassed absolute zero, at:
http://www.fromquarkstoquasars.com/is-absolute-zero-absolute/

Image:
WikiMedia, public domain