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The temperature of the thermopause could range from nearly absolute zero to 987.547 °C (1,810 °F). Below this, the atmosphere is defined to be active [clarification needed] on the insolation received, due to the increased presence of heavier gases such as monatomic oxygen. The solar constant is thus expressed at
The highly attenuated gas in this layer can reach 2,500 °C (4,530 °F). Despite the high temperature, an observer or object will experience low temperatures in the thermosphere, because the extremely low density of the gas (practically a hard vacuum) is insufficient for the molecules to conduct
The height of the thermopause varies considerably due to changes in solar activity. [22] Because the thermopause lies at the lower boundary of the exosphere, it is also referred to as the exobase. The lower part of the thermosphere, from 80 to 550 kilometres (50 to 342 mi) above Earth's surface, contains the ionosphere.
The lower boundary of the exosphere is called the thermopause or exobase. It is also called the critical altitude , as this is the altitude where barometric conditions no longer apply. Atmospheric temperature becomes nearly a constant above this altitude. [ 5 ]
The tropopause is defined as the lowest level at which the lapse rate decreases to 2°C/km or less, provided that the average lapse-rate, between that level and all other higher levels within 2.0 km does not exceed 2°C/km. [1] The tropopause is a first-order discontinuity surface, in which temperature as a function of height varies ...
Past research suggests that our body temperature can vary by as much as 2 degrees overnight, and that a drop in temperature may help get our bodies and brains ready for a great night’s sleep, Dr ...
The ideal temperature for sleep is typically between 60°F and 67°F for most adults, says Martina Vendrame, M.D., neurologist and sleep medicine specialist at Lehigh Valley Health Network.
A man who kidnapped and sexually assaulted a Northern California woman in what became widely known as the “Gone Girl” kidnapping has been charged with two 15-year-old home invasion sexual ...