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upper critical temp. means 273k and lower temp. means -273k.now 50 deg cent. above upper cri. temp means 273+50 deg cent.(=273+323)kelvin
The minimum temperature is 0 on the Kelvin scale or -273.15 degrees C. Temperature doesn't really have an upper limit, but the hottest known objects are roughly tens of millions degrees C.
As far as I know, there is no lower limit; instead, there is an upper temperature limit, at which the material stops being a superconductor.
Because of your mom
Full annealing process consists of three steps. First step is heating the steel component to above upper critical temperature by 30 to 50 deg c, after suffciant soaking time parts will be cooled very slowly in the furnace. Where as for ISo Thermal annealing parts will be heated above upper critical temperature by 30 to 50 deg c, after suffciant soaking time parts will be transfered to intermediate temprature( Below the lower critical temperature) and allow to equalise the temperature then cool in air to Room temperature
troposphere
The temperature in Tierrasanta for today is fairly mild reaching only 67.3 degrees Fahrenheit. However, for the Summer season the temperatures can range from the lower to upper 70s.
lower limit because the particles have zero energy. there is no upper limit because particles can move as fast as they like. There is an upper limit on temperature, called "Planck Temperature". It is approximately 1.42e32 Kelvin! This temperature is the maximum temperature something can attain, with the physics we understand.
upper fixed point is a temperature of stem from water boiling and standards atmospheric pressure lower fixed point is the temperature of pure melting ice.
Yes, the upper stratosphere is colder than the lower stratosphere. This is because the stratosphere is heated from below by the Earth's surface, so as you move higher in the atmosphere, the temperature decreases. The temperature inversion between the lower and upper stratosphere is due to the absorption of solar radiation by ozone in the upper stratosphere.
The temperatures in the mesosphere vary mostly by altitude (and of course by season and latitude). The temperature of the upper mesosphere may fall as low as −101 °C (172 K; −150 °F). The temperatures in the lower mesosphere tend to be around the freezing point of water: 0 °C (273 K, 32 °F)
425 and 350
January temperatures in Nashville average in the 40s during the day and upper 20s at night.
Temperature Density and Pressure
Average Summer temperatures are the mid to upper 80's.
At temperatures of 55 degrees F/12.78 degrees Cpoinsettias (Euphorbia pulcherrima) are in danger of root and stem rot.Specifically, the temperature should not fall below 60 degrees F/15.56 degrees C. But the danger of rot is highest a bit lower than this lower limit of the temperature range in which to keep poinsettias. The upper limit tends to be 80 degrees F/26.67 degrees C. Cooler temperatures often are accompanied by drying conditions. Poinsettias do not favor cold, drought or waterlogging.
At the time I'm writing this answer, I'm astudent of BSc Metallurgical & Materials Engineering and I've had a brief study of Iron-Carbon diagram recently. I hope my answer helps. The Lower Critical Temperature is 1333o F. The Upper Critical Temperature is 2066o F.