Can a temperature be expressed as a negative number?
Certain systems can achieve negative thermodynamic temperature; that is, their temperature can be expressed as a negative quantity on the Kelvin or Rankine scales. This should be distinguished from temperatures expressed as negative numbers on non-thermodynamic Celsius or Fahrenheit scales, which are nevertheless higher than absolute zero .
Who was the first person to predict a negative temperature?
However, in particular isolated systems, the temperature defined in terms of Boltzmann’s entropy can become negative. The possibility of negative temperatures was first predicted by Lars Onsager in 1949, in his analysis of classical point vortices confined to a finite area.
How is temperature related to other degrees of freedom?
However, in statistical mechanics, temperature can correspond to other degrees of freedom than just kinetic energy (see below). The distribution of energy among the various translational, vibrational, rotational, electronic, and nuclear modes of a system determines the macroscopic temperature.
How are temperature and coldness converted on the Kelvin scale?
SI temperature/coldness conversion scale: Temperatures on the Kelvin scale are shown in blue (Celsius scale in green, Fahrenheit scale in red), coldness values in gigabyte per nanojoule are shown in black.
What does it mean when your body temperature is over 38°C?
Body temperature may be abnormal due to fever (high temperature) or hypothermia (low temperature). A temperature over 38°C (100.4°F) most often means you have a fever caused by infection or illness.
What does it mean when your body temperature drops below 95?
Hypothermia is defined as a drop in body temperature below 95 degrees Fahrenheit. According to the Environmental Protection Agency, mercury is a toxic substance that poses a threat to the health of humans, as well as to the environment.
What does Merc book say about engine temp?
Merc book says 450 ohms at 160 degrees (F). The sensor was reading 425 ohms which means it will tell the ECU the engine is running hotter than it really is. I checked this on the temp rise & fall & it consistently read less ohms than the OEM spec. Still will give it a try & update this thread if I find unsatisfactory results.
How is the body temperature measured under the armpit?
Quick Facts: Ear – A special thermometer can quickly measure the temperature of the ear drum, which reflects the body’s core temperature. Axillary – Temperature taken under the arm (armpit) tend to be 0.3 to 0.4 degrees F LOWER than those temperatures taken by mouth.