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Planck temperature, denoted by ''T''P, is the unit of temperature in the system of natural units known as Planck units. It serves as the defining unit of the Planck temperature scale. In this scale the magnitude of the Planck temperature is equal to 1, while that of absolute zero is 0. Unlike Planck length and Planck time, which are defined as the smallest possible measurable units of length and time, Planck temperature is defined as the ''largest'' possible measurable unit of temperature. Other temperatures can be converted to Planck temperature units. For example, 0 °C = 273.15 K = 1.9279 × 10−30''T''P. The Planck temperature in more common units of temperature is 2.55 × 1032 degrees Fahrenheit (255 nonillion degrees Fahrenheit), and 1.417×1032 degrees Celsius (141.7 nonillion degrees Celsius). ==Definition== The Planck temperature is defined as: = 1.416833(85) × 1032 K / - where: *''m''P is the Planck mass, *''c'' is speed of light in a vacuum, * is the reduced Planck constant defined as *''k'' is the Boltzmann constant, *''G'' is the gravitational constant. The two digits between the parentheses are used to denote the standard error of the last two digits of the estimated value. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Planck temperature」の詳細全文を読む スポンサード リンク
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